CN109342417A - Arsenic content detection device and method in a kind of water sample - Google Patents
Arsenic content detection device and method in a kind of water sample Download PDFInfo
- Publication number
- CN109342417A CN109342417A CN201811451377.3A CN201811451377A CN109342417A CN 109342417 A CN109342417 A CN 109342417A CN 201811451377 A CN201811451377 A CN 201811451377A CN 109342417 A CN109342417 A CN 109342417A
- Authority
- CN
- China
- Prior art keywords
- module
- water sample
- resolution
- tube
- measurement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
Abstract
The present invention relates to arsenic content detection device and methods in water sample detection field more particularly to a kind of water sample.Arsenic content detection device includes quantitative sample injection module, resolution module and measurement module in the water sample；The quantitative sample injection module is connect with the resolution module and measurement module simultaneously, and quantitatively extracts using optical quantitation device water sample to be measured respectively and at least four reagents enter resolution module or measurement module, improves measurement accuracy.The resolution module clears up water sample to be measured and generates the gas containing element to be measured；The gas containing element to be measured into measurement module by measuring；Element to be measured is separated with liquid after resolution by the resolution module, element to be measured is individually detected, can effectively avoid in measurement process, measurement accuracy is submitted in the influence of raw water sample and digestion solution to measurement result.The present invention provides a kind of method of arsenic content detection in water sample, and the method increase the measurement accuracy of arsenic in water sample.
Description
[technical field]
The present invention relates to arsenic content detection device and methods in water sample detection field more particularly to a kind of water sample.
[background technique]
Arsenic is a kind of nonmetalloid, widely exists in nature.Micro arsenic is beneficial to body, but excessively
It can be poisoned, or even dead.Currently, causing high risks to environment and human body with the discharge of the sanitary sewage largely containing arsenic.Cause
This needs at any time to detect the arsenic content in water sample.
Then existing detection device and method, which usually clear up to sewage containing arsenic, directly to be measured by development process, such
Detection method is more demanding to water sample, can only meet the detection of more clear arsenic-containing water sample；If it is muddiness or coloured
Water sample can interfere process color, measurement result inaccuracy.
Therefore it is badly in need of a applied widely, the high arsenic-containing water sample detection device of detection accuracy and method.
[summary of the invention]
For technical problem present in the existing measuring device of sewage containing arsenic and method, the present invention provides a kind of water samples
Middle arsenic content detection device and method.
The scheme that the present invention solves technical problem is to provide arsenic content detection device in a kind of water sample, and arsenic contains in the water sample
Amount detecting device includes quantitative sample injection module, resolution module and measurement module；The quantitative sample injection module simultaneously with the resolution
Module is connected with measurement module, and is quantified module using optics and quantitatively extracted water sample to be measured and at least four reagents respectively and enter and disappear
Solve module or measurement module；The resolution module is further connected with the measurement module, and the resolution module is to water sample to be measured
After being cleared up and generating the mixed gas containing arsenic hydride, the mixed gas containing arsenic hydride is passed through the measurement module；
The measurement module includes grading absorption pipe, optical measurement emitting module and optical measurement receiving unit, the grading absorption pipe
Interior carrying absorbing liquid, absorbing liquid form developing solution after absorbing arsenic hydride；Optical measurement emitting module and optical measurement receiving unit
Positioned at grading absorption pipe opposite sides and developing solution is measured, to obtain the arsenic content in corresponding water sample.
Preferably, the quantitative sample injection module includes sequentially connected power device, optical quantitation device, triple valve and more
Join valve；The power device provides power for the quantitative extraction and release of liquid；The optical quantitation device include quantity tube and
At least a certain amount of structure, the D-M (Determiner-Measure) construction carry out accurate quantification to liquid using optical principle；The optics quantity tube is straight
Pipe；Or the quantity tube includes spaced liquid storage Duan Yuliang liquid section, the D-M (Determiner-Measure) construction is opposite to be set to the amount liquid section two
Side.
Preferably, the D-M (Determiner-Measure) construction includes photophore, optical collimator and the sensor for being set to quantity tube opposite sides, leads to
Light device；In the wherein side of quantity tube, optical collimator, photophore be set from the near to the distant, optical collimator and photophore be arranged with
On the parallel same axis of the radial direction of quantity tube；In the other side of quantity tube, from the near to the distant altogether straight line setting optical through with
Sensor, optical through and sensor deviate the axis；The light that photophore issues successively after optical collimator, quantity tube, passes through
Optical through is received by sensor, when sensor receives incident light, then in quantity tube to the liquid level of quantitative liquid not up to
The corresponding position of quantitative value, when sensor can not receive incident light, then the liquid level in quantity tube to quantitative liquid reaches
To the corresponding position of quantitative value.
Preferably, the resolution module includes digestion tube and sealing fixed mechanism；The sealing fixed mechanism is opened for one end
The cavity of mouth, the digestion tube are contained in the cavity inside；The sealing fixed mechanism includes that the first resolution valve and second disappear
Solve valve；The first resolution valve and the second resolution valve are used to control the digestion tube and are in sealing state；The digestion tube includes
Two-port, wherein first port is resolution gas outlet, and second port is liquid import/export；The digestion tube further comprises temperature
Spend sensor and heating component；The heating component is set to the resolution pipe outer wall；The digestion tube is recessed inwardly to form inside
Groove, for placing the temperature sensor, to detect the temperature of the resolution liquid in pipe；The digestion tube is by two internal diameters
Different hollow tubes are socketed to be formed, and there are gaps between two internal diameter difference hollow tubes is passed with accommodating heating component and temperature
Sensor.
Preferably, the digestion tube further includes temperature switch, and the temperature switch is arranged in the temperature sensor and institute
It states between heating component, for automatically cutting off route when temperature sensor failure；The heating component be heating wire,
It is any in heating mantle or heating tube；The digestion tube is quartz glass.
Preferably, gas flow direction first direction in the grading absorption pipe is defined；The grading absorption pipe includes gas
Body absorber portion and the breeze way that the gas absorber portion is connected to along first direction；The breeze way includes the first of connection perforation
Section and second segment, caliber is less than caliber in the maximum of the first segment in the maximum of the second segment；The second segment with it is described
The connection of gas absorber portion；Optical measurement emitting module and optical measurement receiving unit are located at the opposite sides of gas absorber portion and right
Developing solution measures, to obtain the arsenic content in corresponding water sample.
Preferably, caliber is 10mm-30mm in the maximum of the gas absorber portion；Caliber is in the maximum of the first segment
10mm-50mm；Caliber is 5mm-10mm in the maximum of the second segment；Length of the grading absorption pipe on first direction is
30mm-200mm；Length of the gas absorber portion on first direction is 30mm-100mm；The first segment is along first direction
On length be 30mm-100mm；Length of the second segment on first direction is 0.2 times -3 times of the first segment length.
Preferably, the grading absorption pipe further comprises third section and the 4th section；The third section is located at described first
The one end of section far from second segment, for being vented；Described 4th section is located at the gas absorber portion and is used for far from one end of second segment
Feed liquor or drain；Described 4th section the 5th section is further arranged between the gas buffer section and is used for the grading absorption pipe
In be passed through containing elemental gas to be measured.
The present invention provides arsenic content detection method in a kind of water sample, is examined using arsenic content in water sample described in any of the above embodiments
Device measurement is surveyed, is included the following steps:
S1: quantitative water sample to be measured is provided into resolution module by quantitative sample injection module；
S2: providing the first quantitative reagent into resolution module by quantitative sample injection module clears up water sample to be measured；
S3: to clear up in step S2 after the reaction was completed, the second reagent is injected into resolution module by quantitative sample injection module；
S4: clearing up in module injection third reagent by quantitative sample injection module into step S3, and obtained in step S3
Water sample reacts and generates the mixed gas containing arsenic hydride；
S5: the 4th reagent is injected into measurement module by quantitative sample injection module, the mixed gas of the arsenic hydride enters
Within the measurement module, the 4th agent absorbent arsenic hydride and develop the color；
S6: light emitting devices provides the light of specific wavelength to grading absorption pipe, and optical receiver apparatus detects grading absorption pipe
The absorbance of interior liquid, to obtain the arsenic content in corresponding water sample.
Preferably, water sample is heated in digestion process, temperature maintains 50 DEG C -200 DEG C；It, can after the completion of resolution
Cooled down using radiating subassembly to digestion tube, rate of temperature fall is 5 DEG C/min-20 DEG C/min；First reagent is sulfuric acid；The
Two reagents are tartaric acid；Third reagent is sodium borohydride；4th reagent can be nitric acid-silver nitrate-polyvinyl alcohol-ethyl alcohol；Institute
It states in step S1-S6, is required after the completion of each step with to the sample introduction module, resolution module and measurement module and respectively
Deionized water cleaning is injected in pipeline, to guarantee measuring accuracy.
Compared with prior art, the present invention provides arsenic content detection device in a kind of water sample, arsenic content inspection in the water sample
Surveying device includes quantitative sample injection module, resolution module and measurement module；The quantitative sample injection module simultaneously with the resolution module
It is connected with measurement module, and quantifies using optics that module quantitatively extracts water sample to be measured respectively and at least four reagents enter resolution mould
Block or measurement module improve measurement accuracy.The resolution module is cleared up water sample to be measured and is generated containing element to be measured
Gas；The gas containing element to be measured into measurement module by measuring；By the resolution module by member to be measured
Element is separated with liquid after resolution, is individually detected, is can effectively avoid in measurement process to element to be measured, raw water sample and digestion solution
Measurement accuracy is submitted in influence to measurement result.
The present invention provides a kind of method of arsenic content detection in water sample, and the method use arsenic contents in above-mentioned water sample to detect
Device improves the measurement accuracy of arsenic in water sample.
[Detailed description of the invention]
Fig. 1 is the schematic perspective view of arsenic content detection device in a kind of water sample of first embodiment of the invention offer；
Fig. 2 is the vertical of the quantitative sampling device of arsenic content detection device in a kind of water sample of first embodiment of the invention offer
Body structural schematic diagram；
Fig. 3 A is that the optics of arsenic content detection device in a kind of water sample of first embodiment of the invention offer quantifies module
Overall structure diagram；
Fig. 3 B is that the optics of arsenic content detection device in a kind of water sample of first embodiment of the invention offer quantifies in module
The structural schematic diagram of D-M (Determiner-Measure) construction and quantity tube；
Fig. 4 A is that the optics of arsenic content detection device in a kind of water sample of first embodiment of the invention offer quantifies in module
The structural schematic diagram of rack；
Fig. 4 B is the schematic cross-sectional view of first movement part and the second moving member in Fig. 4 A；
Fig. 5 is that the optics of arsenic content detection device in a kind of water sample of invention second embodiment offer quantifies in module quantitatively
The structural schematic diagram of structure and quantity tube；
Fig. 6 is the planar junction of the digestion instrument of arsenic content detection device in a kind of water sample of first embodiment of the invention offer
Structure schematic diagram；
Fig. 7 is the three-dimensional knot of the measuring device of arsenic content detection device in a kind of water sample of first embodiment of the invention offer
Structure schematic diagram；
Fig. 8 A is the segmentation of the measuring device of arsenic content detection device in a kind of water sample of first embodiment of the invention offer
The planar structure schematic diagram of absorption tube；
Fig. 8 B is the segmentation of the measuring device of arsenic content detection device in a kind of water sample of first embodiment of the invention offer
Cross section structure schematic diagram of the absorption tube along first direction；
Fig. 8 C is the grading absorption pipe of the measuring device of arsenic content detection device in another embodiment in Fig. 8 B along first
The cross section structure schematic diagram in direction；
Fig. 8 D is the grading absorption pipe of the measuring device of arsenic content detection device in another embodiment in Fig. 8 B along first
The cross section structure schematic diagram in direction；
Fig. 9 is the course of work schematic diagram of arsenic content detection device in a kind of water sample of first embodiment of the invention offer；
Figure 10 is the flow diagram of arsenic content detection method in the water sample of first embodiment of the invention offer.
Attached drawing mark:
10, arsenic content detection device in water sample；
11, quantitative sampling device；111, power plant module；112, optics quantifies module；115, D-M (Determiner-Measure) construction；1151, it shines
Device；1152, optical collimator；1153, optical through；1154, sensor；116, quantity tube；1161, the first opening；1162, it second opens
Mouthful；1121, controller；1122, bracket；1123, the first side plate；1124, the second side plate；1125, first movement part；1126,
Two moving members；1127, pedestal；1128, the first through slot；1129, the second through slot；
212, optics quantifies module；216, quantity tube；242, liquid storage section；243, liquid section is measured；215, D-M (Determiner-Measure) construction；2151,
Photophore；2152, optical collimator；2153, optical through；2154, sensor；216, quantity tube；2161, the first opening；2162,
Two openings；2121, controller；2122, bracket；
113, triple valve；1131, water sample liquid feeding end to be measured；1132, outlet end；114, Multigang valve；1141, the first reagent into
Sample end；1142, the second reagent sample introduction end；1143, third reagent sample introduction end；1144, the 4th reagent sample introduction end；1145, deionization
Water sample introduction end；1134, waste liquid outlet end；
12, digestion instrument；121, digestion tube；1211, groove；1212, heating component；1213, temperature sensor；1214,
First port；1215, second port；122, fixed mechanism is sealed；1221, the first resolution valve；1222, the second resolution valve；124,
First liquid feeding end；125, first exhaust end；
13, measuring device；131, grading absorption pipe；1311, gas absorber portion；1312, breeze way；1316, first segment；
1317, second segment；1313, third section；1314, the 4th section；1315, the 5th section；132, measurement module；1321, optical measurement is sent out
Penetrate component；1322, optical measurement receiving unit；134, gas sampling end；136, second exhaust end；133, fixed bracket；
W, the interior caliber of grading absorption pipe；The length of H1, grading absorption pipe on first direction；H2, gas absorber portion edge
Length on first direction；The length of H3, first segment on first direction；The length of H4, second segment on first direction；
A, arsine gas；B, absorbent (the 4th reagent)；
14, display device；
16, cabinet body；161, front cover；162, rear shell.
[specific embodiment]
In order to make the purpose of the present invention, technical solution and advantage are more clearly understood, below in conjunction with attached drawing and embodiment,
The present invention will be described in further detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.
Referring to Fig. 1, the first embodiment of the present invention provides arsenic content detection device 10 in a kind of water sample, for to be measured
Arsenic content in water sample is detected comprising sequentially connected quantitative sampling device 11, digestion instrument 12 and measuring device 13.
The effect of the quantitative sampling device 11 is accurate quantification designated volume liquid, to guarantee the essence of arsenic content detection in water sample to be measured
Exactness；The effect of the digestion instrument 12 is that the arsenical in water sample to be measured is further converted to arsenic hydride by resolution
Gas, and the mixed gas containing arsine gas is evicted from and makes it into measuring device 13；The digestion instrument 12 with
It is connected between the measuring device 13 by unidirectional conduit；The mixed gas containing arsenic hydride by the unidirectional conduit into
Enter in the measuring device 13；The measuring device 13 provides space for the chromogenic reaction of arsine gas and is based on spectrophotometric
Method detects arsenic content.
Arsenic content detection device 10 in the water sample, including an exhaust gas processing device (not shown) is to handle resolution or colour developing
What is generated in the process does not participate in other gases of reaction, prevents pollution environment；The exhaust gas processing device and the measuring device
13 connections, to handle the gas being discharged from the measuring device 13 at any time.
Please continue to refer to Fig. 1, arsenic content detection device 10 further comprises cabinet body 16 in the water sample comprising front cover
161 and rear shell 162；The front cover 161 and rear shell 162 are connected by hinge, the quantitative sampling device 11, digestion instrument 12,
Measuring device 13 and exhaust gas processing device are fixed on the inner wall of the rear shell 162；The front cover 161 can relative to rear shell 162
Folding is realized, when the front cover 161 is in an open state with the rear shell 162, so that module each to the inside at any time carries out clearly
It washes and overhauls.
Display device 14 is arranged in the front cover 161, to be contained by arsenic in water sample described in 14 real-time display of display device
The working condition of amount detecting device 10.
As shown in Fig. 2, the quantitative sampling device 11 quantifies module including sequentially connected power plant module 111, optics
112, triple valve 113 and Multigang valve 114.
The power plant module 111 provides power for the quantitative extraction and release of liquid；When needing to quantify liquid,
The power plant module 111 quantifies liquid extraction to the optics in module 112, after the completion of quantitative, the power plant module 111
The liquid is discharged into corresponding digestion instrument 12, within measuring device 13 again.The power plant module 111 is peristaltic pump.
As shown in figs.3 a and 3b, the optics quantifies module 112 and quantifies principle accurate quantification designated volume using optics
Liquid.Specifically, it includes a certain amount of structure 115, controller 1121 and bracket 1122 that the optics, which quantifies module 112,.It is described
D-M (Determiner-Measure) construction 115 and controller 1121 are fixed on the bracket 1122.It further includes certain buret that the optics, which quantifies module 112,
116, the quantity tube 116 is fixed on the bracket 1122, for measuring liquid.
The D-M (Determiner-Measure) construction 115 includes photophore 1151, optical collimator 1152, optical through 1153 and sensor 1154.
On the basis of the quantity tube 116, in 116 side of quantity tube, optical collimator 1152, photophore are set from the near to the distant
1151, the optical collimator 1152 is in the same axis parallel with the radial direction of quantity tube 116 with the photophore 1151
On.In the other side of the relatively described photophore 1151 of quantity tube 116, optical through 1153 and sensor 1154 are set from the near to the distant,
The optical through 1153 deviates the axis, the optical through 1153 and sensor 1154 and the hair with the sensor 1154
Light device 1151 is located in same level.
Optionally, the photophore 1151 is used to issue the LED light of the light of specific wavelength, the light of photophore 1151
Spectral range is 390nm-770nm.Optionally, the optical collimator 1152 is convex lens, can converge the photophore 1151 and send out
Light out concentrates the angle of the light issued more, improves the light intensity of issued light, to reduce shadow of the light issued by environment light
It rings, improves the accuracy of measurement.
Optionally, the optical through 1153 be cylinder optical through, that is, through the quantity tube 116 issue light by
After the cylinder interior of the optical through 1153 passes through, input the sensor 1154, the axis of the optical through 1153 with it is described
Photophore 1151 is parallel with the axis of 116 radial direction of quantity tube corresponding to the optical collimator 1152, and the optical through
1153 are located in same level with the photophore 1151.The light that the quantity tube 116 reflects is entering the optical through
When 1153, the refraction light can be in 1153 internal reflection of optical through, to be received by the sensor 1154；And through described fixed
Liquid level of the light that buret 116 reflects in quantity tube 116 reaches occurs deviation when the liquid level of quantitative liquid, the refraction light
And the problem of remaining light of light is due to incident angle is reflected, it cannot be introduced into the optical through 1153, thus can not be by the sensor
1154 receive, and the accuracy that the optics quantifies module 112 can be improved in setting in this way.
The quantity tube 116 is transparent cylinder shape quantity tube, and the diameter of the quantity tube 116 is 5mm-50mm, described fixed
The diameter of buret 116 can also any one of for 5mm, 8mm, 12mm, 20mm, 25mm, 35mm or 43mm, with adapt to it is a variety of not
With the liquid volume of demand.
The end face of the quantity tube 116 is vertical with tube wall, and the tube wall of the quantity tube 116 is equipped with multiple quantitative points (figure
Do not show), for marking the liquid volume in quantity tube 116 corresponding with the quantitative point, an axis and one described fixed
Amount point is concordant.
In conjunction with shown in Fig. 3 A, the quantity tube 116 includes opposite both ends, which is equipped with opening；Wherein, first
Opening 1161 is liquid feeding end, is connect with the triple valve 113；Second opening 1162 is connect with the power plant module, and extracting is infused
Enter the optics to quantify in module 112.
Defining liquid flow direction in the quantity tube 116 is first direction, and the quantity tube 116 is along first direction
Length is 2cm-10cm, and the length of the quantity tube 116 can also be any one of 2cm, 5cm, 8cm or 10cm, to adapt to
The liquid volume of a variety of different demands, such as 1mL or 5mL.
Incorporated by reference to Fig. 4 A and Fig. 4 B, the bracket 1122 includes the first side plate 1123, the second side plate 1124, first movement part
1125, the second moving member 1126 and pedestal 1127.First side plate 1123 and the second side plate 1124 are vertically installed in described
On pedestal 1127, the quantity tube 116 is vertically fixed on pedestal 1127, the quantity tube 116 be located at the first side plate 1123 with
Between second side plate 1124.
For carrying the photophore 1151 and the optical collimator 1152, described second moves the first movement part 1125
Moving part 1126 is for carrying the optical through 1153 and the sensor 1154；It is offered on first side plate 1123 and first
The first parallel through slot 1128 of direction, the first movement part 1125 can be located in first through slot 1128 in a first direction
It is mobile.Offer the second through slot 1129 for being offset from 116 longitudinal axis of quantity tube on second side plate 1124, described
Two moving members 1126 can move up in a first direction dynamic in second through slot 1129.The controller 1121 is arranged described
On first side plate 1123.
When 116 blank pipe of quantity tube, the first movement part 1125 and second moving member 1126 are moved to
The corresponding quantitative point of liquid level to quantitative liquid.Corresponding, the sending of photophore 1151 can be received by the sensor 1154
Light by optical collimator 1152, the optical collimator 1152 injects quantity tube 116 after converging the light, and the light is by quantitative
The quantity tube 116 is passed through after the refraction of pipe 116, the light after refraction passes through the optical through positioned at 116 other side of quantity tube
It is received after 1153 by the sensor 1154.
When the quantity tube 116 by power plant module to extraction liquid within the quantity tube 116 when, when quantity tube 116
Interior to reach when quantitative value corresponding quantitative point when the liquid level of quantitative liquid, the light that the photophore 1151 issues is described fixed
Refraction route in buret 116 changes, which deviates the optical through 1153, avoids the refraction light that from can not passing through institute
It states optical through 1153 and injects the sensor 1154, so that the sensor 1154 can not receive the refraction light, the controller
1121 cutting external impetus modules just obtain the liquid of required volume with the extracting of stop liquid at this time.
Referring to Fig. 5, the second embodiment of the present invention, which provides a kind of optics, quantifies module 212, implement with above-mentioned first
The difference that optics provided by example quantifies module 112 is: the quantity tube 216 includes multiple spaced liquid storage sections 242
With amount liquid section 243, the liquid storage section 242 and the amount liquid section 243 are all cylindrical shape, and the corresponding tube wall of the liquid storage section 242
Internal diameter is less than the corresponding pipe wall internal diameters of the amount liquid section 243, and the quantity tube 216 further includes multiple quantitative points, and one is described quantitative
Point is set on the corresponding pipe of each amount liquid section 243.
In the present invention, the diameter of the liquid storage section 242 is 5mm-30mm, and the diameter of the liquid storage section 242 can also be
Any one of 5mm, 8mm, 15mm, 24mm or 28mm.The diameter of the amount liquid section 243 is 3mm-10mm, the amount liquid section 243
Diameter can also be any one of for 3mm, 5mm, 7mm, 9mm or 10mm.So that the optics quantify module 212 can be more quasi-
The liquid of the smaller size smaller really extracted.
Please continue to refer to Fig. 5, it includes multiple D-M (Determiner-Measure) constructions 215, a D-M (Determiner-Measure) construction that the optics, which quantifies module 212,
The 215 corresponding quantitative points.The optics of liquids quantify the D-M (Determiner-Measure) construction 215 of module 212, quantity tube 216 setting with it is described
In bracket (not shown).
When the optics quantifies 216 blank pipe of quantity tube of module 212, module 112 is quantified using optics in first embodiment
Set-up mode, even if the photophore 2151 issue can by the received light of the sensor 2154 by optical collimator 2152,
The optical collimator 2152 injects quantity tube 216 after converging the light, and the light is passed through by after the refraction in quantity tube 216
The quantity tube 216, by the sensor after the optical through 2153 of light after refraction by being located at 216 other side of quantity tube
2154 receive.
When the quantity tube 216 by power plant module to extraction liquid within the quantity tube 216 when, when the liquid level arrives
When quantitative point corresponding up to liquid level when quantitative liquid, folding of the light that the photophore 2151 issues in the quantity tube 216
Ray road changes, which deviates the optical through 2153, then the refraction light is avoided by the optical through 2153, so that
The sensor 2154 can not receive the refraction light, and the controller 2121 cuts off external impetus module with the note of stop liquid
Enter.
The optics quantifies module 212 using the amount liquid section 243 than the smaller internal diameter of liquid storage section 242, and is provided with more
A D-M (Determiner-Measure) construction 215 makes the corresponding quantitative point of a D-M (Determiner-Measure) construction 215, so that the optics of liquids quantifies module 212
The liquid for the smaller size smaller that can more accurately extract.
The liquid is any in water sample to be measured, reagent, deionization, detergent or standard solution.
Please continue to refer to Fig. 2, the optics quantifies module 112 and connects triple valve 113 far from one end of power plant module 111,
Three ports of the triple valve 113 are connect with water sample liquid feeding end 1131 to be measured, Multigang valve 114 and outlet end 1132 respectively.
The water sample liquid feeding end 1131 to be measured is only water sample sample introduction to be measured, prevents water sample to be measured and reagent, deionization, washing
It is interfered between agent or standard solution, so as to improve the accuracy of measurement.
The Multigang valve 114 is mainly used for various different reagents, deionization, detergent or standard solution difference sample introduction,
Prevent they respectively between cross contamination；Influence the accuracy of measurement.
The Multigang valve 114 includes a connectivity port, a waste liquid outlet end 1134 and at least five reagent sample introduction end
Mouthful.Wherein, the connectivity port is connect with the triple valve 113, so that reagent, deionization, detergent or standard solution enter
Optics quantifies module 112 and completes quantitatively；The waste liquid outlet end 1134 is waste liquor stream exit port, is convenient for waste collection, anti-major structure
At secondary pollution.Multiple reagent port inputs respectively include the first reagent sample introduction end 1141, the second reagent sample introduction end 1142,
Third reagent sample introduction end 1143, the 4th reagent sample introduction end 1144 and deionized water sample introduction end 1145, prevent the intersection between each reagent
Pollution.
As shown in fig. 6, the digestion instrument 12 includes digestion tube 121 and sealing fixed mechanism 122.The fixed machine of the sealing
Structure 122 is cavity open at one end, and the digestion tube 121 is contained in the cavity inside.
The sealing fixed mechanism 122 includes the first resolution valve 1221 and the second resolution valve 1222；The first resolution valve
1221 and second resolution valve 1222 can close and open at any time, be in sealing state or non-close for controlling the digestion tube 121
Envelope state.The sealing fixed mechanism 122 further comprises radiating subassembly (not shown), so that 121 fast cooling of digestion tube.Institute
Radiating subassembly is stated to be set on the inner wall of the sealing 122 open end face of fixed mechanism.The radiating subassembly include radiator fan,
It is any in recirculated water or other refrigerating plants.
Please continue to refer to Fig. 6, the digestion tube 121 is a hollow tube, and the digestion tube 121 includes two ports, the
For Single port 1214 for being vented, second port 1215 is used for sample introduction or stock layout.The digestion tube 121 includes temperature sensor
1213, heating component 1212 and temperature switch (not shown).Wherein, the heating component 1212 is set to outside the digestion tube 121
Wall；The heating component 1212 is any in heating wire, heating mantle or other heating equipments.In some specific realities of the present invention
Apply in example, the digestion tube 121 by winding electric-heating-wire-heating, it can be achieved that be evenly heated in its outer wall, thus can realize conveniently,
Quickly resolution heating.
The digestion tube 121 is recessed inwardly to form interior grooves 1211 for placing temperature sensor 1213, passes through temperature
Sensor 1213 detects resolution fluid temperature；The temperature switch is an overheat protector device, the temperature switch and institute
It states setting heating component 1212 outside digestion tube 121 to be connected, and is fixed on the outer wall of the digestion tube 121, for being passed when temperature
When sensor 1213 fails, if temperature liter is set excessively high, temperature switch can automatically cut off route, prevent 121 temperature of digestion tube excessively high-incidence
The danger such as raw explosion.
In some other embodiments of the present invention, the digestion tube 121 is socketed by two different hollow tubes of internal diameter and is formed
(not shown), there are gaps to accommodate heating component and temperature sensor between two internal diameter difference hollow tubes.
The digestion tube 121 is quartz glass tube.
Specifically, the operation of the digestion instrument 12 is as follows: after water sample to be measured enters digestion tube 121, to resolution
The first reagent is added in pipe 121 and carries out resolution reaction, digestion tube 121 described in digestion process is in sealing state and passes through heating
Component 1212 carries out external heating to the digestion tube 121；The moment of temperature sensor 1213 described in heating process detects liquid
Temperature to be adjusted in real time.Wait clear up after reaction, digestion tube 121 is cooled down, radiating subassembly can be opened in cooling procedure
Accelerate cooling velocity.Simultaneously other ions in the second reagent masking water sample to be measured are added in depressurization state, while being situated between as reaction
Matter participates in reaction, reduces measurement error；；Then third reagent is passed through into the digestion tube again, by the pentavalent arsenic of water sample to be measured
It is reduced to trivalent arsenic, and discharges arsine gas, the arsine gas is discharged from 121 upper end first port 1214 of digestion tube.
First reagent is sulfuric acid, clears up the arsenide of various valence states in water sample to be measured；Second reagent is wine
Stone acid, effect be other ions in water sample to be measured are sheltered, while as reaction medium participate in react, reduce measurement
Error；Third reagent is sodium borohydride, and effect is the arsenic hydride that the pentavalent arsenide in water sample to be measured is reduced to trivalent arsenic
Gas.
As shown in fig. 7, the measuring device 13 includes a grading absorption pipe 131, measurement module 132 and fixed bracket 133.
The grading absorption pipe 131 is fixed on the fixed bracket 133 with measurement module 132.
The grading absorption pipe 131 is any in transparent quartz tube or transparent glass tube.
As shown in Figure 8 A, the grading absorption pipe 131 is the hollow tube of a segmentation；Define the grading absorption pipe 131
Interior gas flow direction first direction；The grading absorption pipe 131 includes gas absorber portion 1311 and is connected to along first direction
The breeze way 1312 of the gas absorber portion 1311.The gas absorber portion 1311 is to hold absorbent (the 4th reagent) and absorb
Arsine gas provides space for chromogenic reaction；The breeze way 1312 guarantees the abundant of arsenic hydride to buffer arsine gas
It absorbs.
The grading absorption pipe 131 further comprises third section 1313 and the 4th section 1314；The third section 1313 is located at
The breeze way 1312 far from one end of gas absorber portion 1311 is used to that the gas for being not involved in reaction to be discharged；Described 4th section 1314
Feed liquor or drain are used for far from one end of breeze way 1312 positioned at the gas absorber portion 1311；Described 4th section 1314 with it is described
The 5th section 1315 is further arranged between gas buffer section 1311 for being passed through into the grading absorption pipe 131 containing arsenic hydride
The mixed gas of gas.
Length H1 of the grading absorption pipe 131 on first direction is 30mm-200mm, further, the length H1
It is any in 30mm, 50mm, 80mm, 100mm, 130mm, 150mm or 200mm.
As shown in figures 8 a-8d, the grading absorption pipe 131 is round, square or length along the section of vertical first direction
It is any in rectangular.It is to be understood that as shown in figure 8B, when grading absorption pipe 131 is along the section of vertical first direction circle
When shape, caliber is circular diameter in the maximum of the grading absorption pipe 131；As seen in fig. 8 c, when grading absorption pipe 131
When being square along the section of vertical first direction, caliber is square in the maximum of the grading absorption pipe 131 side length；Such as
Shown in Fig. 8 D, when grading absorption pipe 131 along the section of vertical first direction be rectangle when, the grading absorption pipe 131
Caliber is the longer side length of rectangle in maximum.
Specifically, caliber is 10mm-30mm, further, said inner tube diameter in the maximum of the gas absorber portion 1311
It is any in 10mm, 14mm, 16mm, 20mm, 25mm or 30mm；Length of the gas absorber portion 1311 on first direction
H2 is 30mm-100mm, and the length H2 is any in 30mm, 50mm, 60mm, 70mm, 85mm or 100mm.Such structure
It is designed as absorbent (the 4th reagent) and fully absorbs arsine gas providing space, increase arsine gas and absorbent (the
Four reagents) contact area, guarantee measurement accuracy.
The breeze way 1312 further comprises the first segment 1316 and second segment 1317 of perforation, wherein the second segment
1317 connect with the gas absorber portion 1311；Specifically, caliber is 10mm-50mm in the maximum of the first segment 1316, into
One step, caliber is any in 10mm, 18mm, 25mm, 35mm or 50mm in the maximum；The first segment 1316 is along first
Length H3 on direction is 30mm-100mm, and the length H3 is any in 30mm, 50mm, 60mm, 70mm, 85mm or 100mm
Kind.
Caliber is 5mm-10mm, further, the most imperial palace of the second segment 1317 in the maximum of the second segment 1317
Caliber is any in 5mm, 6mm, 7mm, 8mm, 9mm and 10mm；Length H4 of the second segment 1317 on first direction be
0.2 times -3 times of 1316 length H3 of first segment, further, the length H4 on first direction of the second segment 1317 are the
It is any in 0.2 times, 0.8 times, 1.5 times, 2.5 times or 3 times of one section 1316 of length H3.Described 4th section 1314 and described the
Caliber is identical in two section 1317 of maximum；Caliber is 1mm in 5th section 1315 of the maximum.The second segment 1317 with it is described
Gas absorber portion 1311 is connected.Such structure design, can play the arsine gas for being passed through grading absorption pipe 131 slow
Punching effect, preventing the mixed gas containing arsenic hydride not to be absorbed the gas of agent (the 4th reagent) absorption during being passed through will be described
Absorbent is discharged from third section 1313.
Please continue to refer to Fig. 7, the measurement module 132 includes optical measurement emitting module 1321 and optical measurement reception group
Part 1322, the optical measurement emitting module 1321 are respectively arranged on the gas with the optical measurement receiving unit 1322 and absorb
The two sides of section 1311.When the grading absorption pipe 131 along the section of vertical first direction be rectangle when, the measurement module
132 are located at the two sides of the 131 small side length of section rectangle of grading absorption pipe.The optical measurement emitting module 1321 is capable of emitting
The light of specific wavelength simultaneously passes through the gas absorber portion 1311 arrival optical measurement receiving unit 1322, since the gas absorbs
The interior caliber of section 1311 is larger, when the light of specific wavelength passes through, increases the extinction light path of color development area, to make to be divided light
The detection limit of degree method measurement measurement arsenic content test is reduced to 0.002mg/L.
In conjunction with Fig. 1 to Fig. 9, arsenic content detection device 10 detects water sample to be measured in water sample provided by the present invention tool
Body running process are as follows:
Before test, by deionized water sample introduction end 1145 to quantitative sampling device 11, digestion instrument 12, measuring device 13 and
It injects deionization washing water in each pipeline to wash it, to remove impurity, waste liquid is discharged by waste liquid outlet end 1146 after cleaning.
Water sample to be measured quantifies module 112 into optics through triple valve 113 from water sample liquid feeding end 1131 to be measured and measures particular volume
After product (1mL or 5mL), into digestion instrument 12.
First reagent quantifies module 112 into optics through the first reagent sample introduction end 1141 and quantitatively subsequently enters digestion instrument 12
Start resolution reaction.First reagent is sulfuric acid；Digestion tube 121 described in digestion process is in sealing state and to digestion tube
121 carry out external heating, and digestion condition is 50 DEG C -200 DEG C, further, digestion condition is 50 DEG C, 70 DEG C, 98 DEG C, 120 DEG C,
150 DEG C or 200 DEG C any；Fluid temperature is detected to be adjusted in real time by 1213 moment of temperature sensor, is disappeared herein
Solution preocess is to clear up the arsenide of various valence states in water sample to be measured.
After reaction, cooling digestion tube 121 down to specific temperature (25 DEG C), while releasing digestion tube 121 for resolution
Sealing transition, radiating subassembly can be opened in cooling procedure to accelerate cooling velocity, cooling rate control 5 DEG C/min-20 DEG C/
min.Second reagent quantifies module 112 into optics through the second reagent sample introduction end 1142 and quantitatively subsequently enters digestion instrument 12, institute
Stating the second reagent is tartaric acid；Its effect is to shelter to other metal ions in water sample to be measured, while being situated between as reaction
Matter participates in reaction, reduces measurement error.
Then it is passed through third reagent through third reagent sample introduction end 1143 again, third reagent quantifies module 112 through optics and quantifies
Enter digestion instrument 12 afterwards；The third reagent is sodium borohydride, and effect is by the pentavalent arsenide reduction in water sample to be measured
For the arsine gas of trivalent arsenic, the arsine gas is discharged from 121 exhaust outlet of digestion tube through unidirectional conduit, enters measurement
Device 13.
Fixed measured 4th reagent, the 4th reagent are placed in the grading absorption pipe 131 of the measuring device 13 in advance
For nitric acid-silver nitrate-polyvinyl alcohol-ethyl alcohol, effect is to absorb arsine gas, and then chromogenic reaction occurs, and arsenic hydride can
At simple substance collargol, while making solution in yellow the silver ion reduction in the 4th reagent, the colour darkness of the yellow with
The amount of the arsenic hydride of absorption is directly proportional.
Specifically, after arsine gas enters grading absorption pipe 131, chromogenic reaction, the colour developing occurs with the 4th reagent
The liquid level of reaction solution is higher than the gas absorber portion 1311 of the grading absorption pipe 131.After the completion of chromogenic reaction, the optics is surveyed
It measures emitting module 1321 and issues the light and the arrival of gas absorber portion 1311 for passing through the grading absorption pipe 131 that wavelength is 400nm
Optical measurement receiving unit 1322.According to chromogenic reaction object in the gas absorber portion 1311 of measurement to the light that wavelength is 400nm
Absorbance can further learn the content of total arsenic in water sample to be measured.
In process color or digestion process, the gas of chromogenic reaction is not participated in, the outlet from 13 upper end of measuring device
Mouth discharge, is absorbed into exhaust gas processing device, prevents the pollution of the environment.
In order to improve the precision of measurement, by the arsenic standard solution for the various concentration got ready in advance directly from third reagent into
Sample end 1143 is passed through, and enters digestion instrument 12 after optics quantifies module 112 quantitatively, is repeated above-mentioned identical process and is occurred to show
Colour response, and draw the standard curve of the corresponding absorbance of different arsenic contents.
In other embodiments of the invention, the arsenic titer can also be by other sample introductions in addition to above-mentioned third reagent
End enters.Above-mentioned test after each sample introduction, can be passed through deionized water cleaning modules and pipeline, guarantee measuring accuracy.
After test reaction, again by deionized water sample introduction end 1145 to quantitative sampling device 11, digestion instrument 12
And deionized water is injected in measuring device 13, after cleaning impurity, integrated testability process terminates.
Referring to Fig. 10, using water as described above the present invention also provides the method that arsenic content in a kind of water sample detects
The device 10 that arsenic content detects in sample comprising following steps:
S1: quantitative water sample to be measured is provided into digestion instrument by quantitative sampling device；
S2: providing the first quantitative reagent into digestion instrument by quantitative sampling device clears up water sample to be measured；
S3: to clear up in step S2 after the reaction was completed, the second reagent is injected into digestion instrument by quantitative sampling device；
S4: third reagent is injected into step S3 by quantitative sampling device in digestion instrument, and obtained in step S3
Water sample reacts and generates the mixed gas containing arsenic hydride；
S5: the 4th reagent is injected into measuring device by quantitative sampling device, the mixed gas of the arsenic hydride enters
Within the measuring device, the 4th agent absorbent arsenic hydride and develop the color；
S6: optical measurement emitting module provides the light of specific wavelength, the inspection of optical measurement receiving unit to grading absorption pipe
The absorbance of grading absorption liquid in pipe is surveyed, to obtain the arsenic content in corresponding water sample.
Variant embodiment of the invention, each step is intended to be cleaned after the completion, to quantitative sampling device, digestion instrument
And measuring device injection deionized water cleaning, to remove impurity.
As another variant embodiment of the invention, water sample to be measured is heated while resolution, heating temperature dimension
It holds at 50 DEG C -200 DEG C, further, digestion condition is 50 DEG C, 70 DEG C, 98 DEG C, 120 DEG C, 150 DEG C or 200 DEG C any.
As another variant embodiment of the invention, radiating subassembly is opened simultaneously after the completion of resolution and accelerates cooling, cooling
Rate is 5 DEG C/min-20 DEG C/min.
Compared with prior art, arsenic content detection device and method in a kind of water sample provided by the present invention have as follows
The utility model has the advantages that
(1) compared with prior art, the present invention provides arsenic content detection device in a kind of water sample, arsenic in a kind of water sample
Content detection device, arsenic content detection device includes quantitative sample injection module, resolution module and measurement module in the water sample；It is described
Quantitative sample injection module is connect with the resolution module and measurement module simultaneously, and using optics quantify module quantitatively extract respectively to
It surveys water sample and at least four reagents enters resolution module or measurement module；The resolution module further with the measurement module phase
Even, after the resolution module is cleared up to water sample to be measured and generates the mixed gas containing arsenic hydride, by described containing arsenic hydride
Mixed gas is passed through the measurement module；The measurement module includes that grading absorption pipe, optical measurement emitting module and optics are surveyed
Receiving unit is measured, absorbing liquid is carried in the grading absorption pipe, absorbing liquid forms developing solution after absorbing arsenic hydride；Optical measurement hair
It penetrates component and optical measurement receiving unit is located at the opposite sides of grading absorption pipe and measures to developing solution, to obtain correspondence
Arsenic content in water sample.The resolution module separates element to be measured with the liquid after resolution, and individually enters element to be measured
Measurement module is detected, and can effectively avoid in measurement process, the influence of raw water sample and digestion solution to measurement result, improves resolution
Measurement accuracy.
(2) present invention provides a kind of quantitative sample injection module of arsenic content detection device in water sample, the quantitative sample injection module
Including sequentially connected power device, optical quantitation device, triple valve and Multigang valve；The power device is Liquid extracting and releases
Offer power is provided；The optical quantitation device quantifies principle using optics, improves sampling accuracy, and then improves arsenic content detection
Precision；The triple valve separates the sample feeding pipe of water sample to be measured and reaction reagent, avoids mutually polluting, influences measuring accuracy；
The Multigang valve separates the sample feeding pipe of reagent, avoids each reagent from mutually polluting, influences measuring accuracy.
(3) present invention provides a kind of quantitative sample injection module of arsenic content detection device in water sample, and the quantitative module includes
A certain amount of structure, certain buret, controller and bracket, the D-M (Determiner-Measure) construction, quantity tube and controller are arranged in the bracket
On, the D-M (Determiner-Measure) construction includes photophore, optical collimator, sensor and the optical through set on quantity tube opposite sides；With quantitative
On the basis of pipe, optical collimator, photophore are set from the near to the distant, the optical collimator and the photophore are in quantity tube radial direction position
On the same axis set；In quantity tube opposite side, optical through and sensor, the optical through and the biography are set from the near to the distant
Sensor deviates the axis；In the present invention, it when quantitative liquid in pipe rises to required volume, is collimated in photophore incident light
After device convergence, in the light by quantity tube refraction deviation occurs for the light of sending, and D-M (Determiner-Measure) construction is logical in the liquid quantifying device
Light device can block the refraction light after deviation occurs, and prevent the remaining light of the refraction light or environment light from being received by sensor fixed to influence
The accuracy of quantity of fluid.
(4) present invention provides a kind of resolution module of arsenic content detection device in water sample, and the resolution module includes described
Resolution module includes digestion tube and sealing fixed mechanism；The sealing fixed mechanism is open at one end for cuboid cavity, institute
It states digestion tube and is contained in the cavity inside, the sealing fixed mechanism can be fixed effectively and protect the digestion tube, and make
Sealing state is in when the digestion tube is cleared up；The further radiating subassembly of the resolution module can accelerate the digestion tube drop
Temperature.
(5) present invention provides a kind of digestion tube of arsenic content detection device in water sample, the digestion tube include temperature switch,
Temperature sensor and heating component；The heating component is set to the resolution pipe outer wall, to heat to the digestion tube；Institute
Temperature sensor is stated for detecting the temperature of liquid；The temperature switch heating component is connected, and is fixed on resolution pipe outer wall,
When for temperature sensor failure, automatically cutting off route prevents the danger such as the excessively high generation explosion of digestion tube temperature；The heating group
Part is that heating wire can be such that digestion tube is heated evenly, can realization easily and fast clear up heating.
(6) present invention provides a kind of grading absorption pipe of arsenic content detection device in water sample, the grading absorption Guan Weihan
There is the gas detection of element to be measured to provide reaction compartment；The grading absorption pipe includes gas absorber portion described in gas absorber portion
Interior caliber be 5mm-50mm；Such structure design fully absorbs the gas containing element to be measured convenient for absorbent, guarantees to survey
The accuracy of amount.
(7) present invention provides a kind of grading absorption pipe of arsenic content detection device in water sample, and the gas absorber portion is most
Imperial palace caliber is 10mm-30mm；Caliber is 10mm-50mm in the maximum of the first segment；The most imperial palace of the second segment is
5mm-10mm；Length of the grading absorption pipe on first direction is 30mm-200mm, preferably 130mm；The gas is inhaled
Receiving length of the section on first direction is 30mm-100mm；Length of the first segment on first direction is 30mm-100mm；
Length of the second segment on first direction is 0.2 times -3 times of the first segment length；Pass through the cooperation of the first segment and second segment
Buffer function, gas flows through absorbent described in senior general from top exhaust port during the gas containing element to be measured can be prevented to be passed through
Discharge.
(8) present invention provides a kind of detection device of arsenic content detection device in water sample, and the measuring device includes optics
Measure transmitting terminal and optical measurement receiving end；The optical measurement transmitting terminal is oppositely arranged with the optical measurement receiving end；Point
Not She Yu the gas absorber portion two sides；The optical measurement transmitting terminal issues the light of specific wavelength and passes through the gas
Absorber portion reaches optical measurement receiving end, and design in this way increases spectrophotometry measurement light path to promote the inspection of arsenic content test
Rising limit.
(9) present invention provides a kind of method of arsenic content detection in water sample, using arsenic content detection device in above-mentioned water sample,
The interference of liquid, improves the measurement accuracy and detection limit of arsenic in water sample after avoiding raw water sample and clearing up.
(10) present invention provides a kind of method of arsenic content detection in water sample, heats in digestion process to water sample,
Temperature maintains 50 DEG C -200 DEG C, to accelerate oxidation rate, saves digestion time, or makes the more thorough of resolution reaction progress；Disappear
After the completion of solution, radiating subassembly can be used to cool down digestion tube, rate of temperature fall is 5 DEG C/min-20 DEG C/min, can be saved in this way
Save the reaction time；First reagent is sulfuric acid, so that the arsenide in water sample is cleared up；Second reagent is tartaric acid, with
Other ions in water sample are sheltered, while participating in reacting as reaction medium, reduce measurement error；Third reagent is sodium borohydride,
Make pentavalent arsenic ion reduction trivalent arsenic in the water sample cleared up, while being discharged in the form of arsine gas；4th reagent can be with
For nitric acid-silver nitrate-polyvinyl alcohol-ethyl alcohol, effect is to absorb arsenic hydride, and then chromogenic reaction occurs, and arsenic hydride can incite somebody to action
Silver ion reduction in 4th reagent makes solution in yellow, the colour darkness of the yellow and absorption at simple substance collargol
Arsenic hydride amount it is directly proportional；It is required after the completion of each step with to the sample introduction module, resolution module and measurement mould
Deionized water cleaning is injected in block and each pipeline, to guarantee measuring accuracy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in original of the invention
Any modification made within then, equivalent replacement and improvement etc. should all be comprising within protection scope of the present invention.
Claims (10)
1. arsenic content detection device in a kind of water sample, to be detected to the arsenic content in water sample, it is characterised in that: the water sample
Middle arsenic content detection device includes quantitative sample injection module, resolution module and measurement module；The quantitative sample injection module simultaneously with institute
It states resolution module to connect with measurement module, and quantifies module using optics and quantitatively extract water sample to be measured and at least four reagents respectively
Into resolution module or measurement module；The resolution module is further connected with the measurement module, and the resolution module is treated
After survey water sample is cleared up and generates the mixed gas containing arsenic hydride, the mixed gas containing arsenic hydride is passed through the measurement
Module；The measurement module includes grading absorption pipe, optical measurement emitting module and optical measurement receiving unit, and the segmentation is inhaled
Absorbing liquid is carried in closed tube, absorbing liquid forms developing solution after absorbing arsenic hydride；Optical measurement emitting module and optical measurement receive
Component is located at the opposite sides of grading absorption pipe and measures to developing solution, to obtain the arsenic content in corresponding water sample.
2. arsenic content detection device in a kind of water sample described according to claim 1, it is characterised in that: the quantitative sample injection module
Including sequentially connected power device, optical quantitation device, triple valve and Multigang valve；The power device is the quantitative pumping of liquid
It takes and discharges and power is provided；The optical quantitation device includes quantity tube and at least a certain amount of structure, and the D-M (Determiner-Measure) construction utilizes
Optical principle carries out accurate quantification to liquid；The optics quantity tube is straight tube；Or the quantity tube includes spaced storage
Liquid Duan Yuliang liquid section, the D-M (Determiner-Measure) construction is opposite to be set to the amount liquid section two sides.
3. arsenic content detection device in a kind of water sample according to claim 2, it is characterised in that: the D-M (Determiner-Measure) construction includes
Set on the photophore of quantity tube opposite sides, optical collimator and sensor, optical through；In the wherein side of quantity tube, by close and
The same axis parallel with the radial direction of quantity tube is arranged in photophore in remote setting optical collimator, photophore, optical collimator
On；In the other side of quantity tube, straight line setting optical through and sensor, optical through and sensor deviate the axis altogether from the near to the distant
Line；The light that photophore issues successively after optical collimator, quantity tube, is received through optical through by sensor, when sensor receives
When to incident light, then in quantity tube to the liquid level of quantitative liquid not up to the corresponding position of quantitative value, when sensor can not
When receiving incident light, then the liquid level in quantity tube to quantitative liquid reaches to the corresponding position of quantitative value.
4. arsenic content detection device in a kind of water sample described according to claim 1, it is characterised in that: the resolution module includes
Digestion tube and sealing fixed mechanism；The sealing fixed mechanism is cavity open at one end, and the digestion tube is contained in the sky
Intracavitary portion；The sealing fixed mechanism includes the first resolution valve and the second resolution valve；The first resolution valve and the second resolution valve
Sealing state is in for controlling the digestion tube；The digestion tube includes two-port, wherein first port is resolution outlet
Mouthful, second port is liquid import/export；The digestion tube further comprises temperature sensor and heating component；The heating group
Part is set to the resolution pipe outer wall；The digestion tube is recessed inwardly to form interior grooves, for placing the temperature sensor, with
Detect the temperature of the resolution liquid in pipe；The digestion tube is socketed by two different hollow tubes of internal diameter and is formed, described in two
There are gaps between internal diameter difference hollow tube to accommodate heating component and temperature sensor.
5. arsenic content detection device in a kind of water sample according to claim 4, it is characterised in that: the digestion tube further includes
Temperature switch, the temperature switch are arranged between the temperature sensor and the heating component, for passing when the temperature
When sensor fails, route is automatically cut off；The heating component is any in heating wire, heating mantle or heating tube；The resolution
Pipe is quartz glass.
6. arsenic content detection device in a kind of water sample described according to claim 1, it is characterised in that: define the grading absorption
Gas flow direction first direction in managing；The grading absorption pipe includes gas absorber portion and is connected to the gas along first direction
The breeze way of body absorber portion；The breeze way includes the first segment and second segment of connection perforation, the maximum inner tube of the second segment
Diameter is less than caliber in the maximum of the first segment；The second segment is connect with the gas absorber portion；Optical measurement emitting module
And optical measurement receiving unit is located at the opposite sides of gas absorber portion and measures to developing solution, to obtain in corresponding water sample
Arsenic content.
7. arsenic content detection device in a kind of water sample according to claim 6, it is characterised in that: the gas absorber portion
Caliber is 10mm-30mm in maximum；Caliber is 10mm-50mm in the maximum of the first segment；The most imperial palace of the second segment is
5mm-10mm；Length of the grading absorption pipe on first direction is 30mm-200mm；The gas absorber portion is along first party
Upward length is 30mm-100mm；Length of the first segment on first direction is 30mm-100mm；Second segment is along first
Length on direction is 0.2 times -3 times of the first segment length.
8. arsenic content detection device in a kind of water sample according to claim 6, it is characterised in that: the grading absorption pipe into
One step includes third section and the 4th section；The third section is located at the one end of the first segment far from second segment, for being vented；It is described
4th section is located at the gas absorber portion and is used for feed liquor or drain far from one end of second segment；Described 4th section slow with the gas
It rushes between section and is further arranged the 5th section for being passed through arsine gas into the grading absorption pipe；Described 4th section with it is described
Caliber is identical in the maximum of second segment；Caliber is 1mm in 5th section of the maximum.
9. arsenic content detection method in a kind of water sample is detected using arsenic content in the water sample of any of claims 1-8
Device measurement, characterized by the following steps:
S1: quantitative water sample to be measured is provided into resolution module by quantitative sample injection module；
S2: providing the first quantitative reagent into resolution module by quantitative sample injection module clears up water sample to be measured；
S3: to clear up in step S2 after the reaction was completed, the second reagent is injected into resolution module by quantitative sample injection module；
S4: injection third reagent in module is cleared up into step S3 by quantitative sample injection module, with water sample obtained in step S3
It reacts and generates the mixed gas containing arsenic hydride；
S5: injecting the 4th reagent into measurement module by quantitative sample injection module, described in the mixed gas of the arsenic hydride enters
Within measurement module, the 4th agent absorbent arsenic hydride and develop the color；
S6: light emitting devices provides the light of specific wavelength to grading absorption pipe, and optical receiver apparatus detects grading absorption intraluminal fluid
The absorbance of body, to obtain the arsenic content in corresponding water sample.
10. arsenic content detection method in a kind of water sample according to claim 9, it is characterised in that: to water in digestion process
Sample is heated, and temperature maintains 50 DEG C -200 DEG C；After the completion of resolution, radiating subassembly can be used to cool down digestion tube, drops
Warm rate is 5 DEG C/min-20 DEG C/min；First reagent is sulfuric acid；Second reagent is tartaric acid；Third reagent is hydroboration
Sodium；4th reagent can be nitric acid-silver nitrate-polyvinyl alcohol-ethyl alcohol；In the step S1-S6, after the completion of each step
It requires to be cleaned with to injection deionized water in the sample introduction module, resolution module and measurement module and each pipeline, to guarantee to survey
Measure accuracy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811451377.3A CN109342417B (en) | 2018-11-29 | 2018-11-29 | Device and method for detecting arsenic content in water sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811451377.3A CN109342417B (en) | 2018-11-29 | 2018-11-29 | Device and method for detecting arsenic content in water sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109342417A true CN109342417A (en) | 2019-02-15 |
| CN109342417B CN109342417B (en) | 2022-02-22 |
Family
ID=65319586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811451377.3A Active CN109342417B (en) | 2018-11-29 | 2018-11-29 | Device and method for detecting arsenic content in water sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109342417B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196230A (en) * | 2019-06-18 | 2019-09-03 | 许昌学院 | Abio-arsenic residues measuring system in water body |
| CN114636694A (en) * | 2022-05-17 | 2022-06-17 | 广东盈峰科技有限公司 | Water environment on-line automatic detection device and detection method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2101218U (en) * | 1991-09-10 | 1992-04-08 | 北京光电技术研究所 | Laser liquid level precise detector |
| CN201596510U (en) * | 2009-06-26 | 2010-10-06 | 广州市怡文环境科技股份有限公司 | High-temperature and high-pressure sealed digestion device |
| CN201803941U (en) * | 2010-09-26 | 2011-04-20 | 苏州聚阳环保科技有限公司 | Cuvette |
| CN102262087A (en) * | 2011-04-27 | 2011-11-30 | 杭州慕迪科技有限公司 | On-line monitoring device for total arsenic in water quality |
| CN202057604U (en) * | 2011-04-27 | 2011-11-30 | 杭州慕迪科技有限公司 | On-line monitoring device for total arsenic in water |
| CN202339348U (en) * | 2011-05-17 | 2012-07-18 | 杭州浩通仪器仪表有限公司 | Sample introduction device |
| CN102661925A (en) * | 2012-05-15 | 2012-09-12 | 力合科技（湖南）股份有限公司 | Method for detecting arsenic content in water body |
| CN203203985U (en) * | 2013-03-25 | 2013-09-18 | 苏州聚阳环保科技有限公司 | Optical quantitative device |
| CN203376015U (en) * | 2013-06-17 | 2014-01-01 | 孙卫国 | Accurate optical quantitative metering device |
| CN203949862U (en) * | 2014-06-12 | 2014-11-19 | 苏州卫水环保科技有限公司 | Many light paths detection cell |
| CN104515570A (en) * | 2013-10-08 | 2015-04-15 | 深圳嘉瑞环境技术有限公司 | Liquid level metering device of water quality analyzer |
| CN105092308A (en) * | 2015-08-18 | 2015-11-25 | 北京雪迪龙科技股份有限公司 | Quantitative sampling device |
-
2018
- 2018-11-29 CN CN201811451377.3A patent/CN109342417B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2101218U (en) * | 1991-09-10 | 1992-04-08 | 北京光电技术研究所 | Laser liquid level precise detector |
| CN201596510U (en) * | 2009-06-26 | 2010-10-06 | 广州市怡文环境科技股份有限公司 | High-temperature and high-pressure sealed digestion device |
| CN201803941U (en) * | 2010-09-26 | 2011-04-20 | 苏州聚阳环保科技有限公司 | Cuvette |
| CN102262087A (en) * | 2011-04-27 | 2011-11-30 | 杭州慕迪科技有限公司 | On-line monitoring device for total arsenic in water quality |
| CN202057604U (en) * | 2011-04-27 | 2011-11-30 | 杭州慕迪科技有限公司 | On-line monitoring device for total arsenic in water |
| CN202339348U (en) * | 2011-05-17 | 2012-07-18 | 杭州浩通仪器仪表有限公司 | Sample introduction device |
| CN102661925A (en) * | 2012-05-15 | 2012-09-12 | 力合科技（湖南）股份有限公司 | Method for detecting arsenic content in water body |
| CN203203985U (en) * | 2013-03-25 | 2013-09-18 | 苏州聚阳环保科技有限公司 | Optical quantitative device |
| CN203376015U (en) * | 2013-06-17 | 2014-01-01 | 孙卫国 | Accurate optical quantitative metering device |
| CN104515570A (en) * | 2013-10-08 | 2015-04-15 | 深圳嘉瑞环境技术有限公司 | Liquid level metering device of water quality analyzer |
| CN203949862U (en) * | 2014-06-12 | 2014-11-19 | 苏州卫水环保科技有限公司 | Many light paths detection cell |
| CN105092308A (en) * | 2015-08-18 | 2015-11-25 | 北京雪迪龙科技股份有限公司 | Quantitative sampling device |
Non-Patent Citations (1)
| Title |
|---|
| 曲东: "《环境监测》", 1 August 2007, 中国农业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196230A (en) * | 2019-06-18 | 2019-09-03 | 许昌学院 | Abio-arsenic residues measuring system in water body |
| CN110196230B (en) * | 2019-06-18 | 2020-04-17 | 许昌学院 | System for measuring inorganic arsenic content in water body |
| CN114636694A (en) * | 2022-05-17 | 2022-06-17 | 广东盈峰科技有限公司 | Water environment on-line automatic detection device and detection method |
| CN114636694B (en) * | 2022-05-17 | 2022-07-29 | 广东盈峰科技有限公司 | Water environment on-line automatic detection device and detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109342417B (en) | 2022-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109342417A (en) | Arsenic content detection device and method in a kind of water sample | |
| CN106596439B (en) | Equipment and method for simultaneously measuring nitrous acid, ozone and nitrogen dioxide in air | |
| CN103033499B (en) | A kind of water quality analytical system | |
| CN102495013B (en) | A kind of water quality in-line digestion and photometric detection device | |
| CN101551323B (en) | Gas phase molecular absorption spectrometer | |
| CN209485971U (en) | A kind of arsenic content measuring device and the detection device comprising the device | |
| CN209821226U (en) | Miniature on-spot automatic nutritive salt analysis appearance under water based on improve SIA technique | |
| CN102759562A (en) | Method for in-situ distillation and on-line measurement of Os in Carius tube | |
| CN105974148A (en) | General high-precision automatic analyzer | |
| CN102980858A (en) | Small-size sequential injection nitride analysis system | |
| CN212410610U (en) | Specific protein detection module and blood detection instrument | |
| CN112881712A (en) | Specific protein detection module, blood detection instrument and detection method | |
| CN208537406U (en) | One kind being based on microflow control technique original position ammonia nitrogen on-line computing model | |
| TWM569428U (en) | Water quality testing module and water quality testing device | |
| CN202486047U (en) | Water quality on-line digestion and luminosity detection device | |
| CN106153563A (en) | A kind of miniature COD on-line detecting system | |
| CN109596603B (en) | Method for simultaneously measuring trace arsenic and multiple metal elements in soil | |
| CN210119442U (en) | ICP spectrometer advances a kind controlling means | |
| CN202903672U (en) | Small-scale analytical system for sequential injection of nitrite | |
| CN208109554U (en) | Detection device for continuous flow method | |
| CN208043663U (en) | On-line preconcentration micro low-temperature plasma atomic-emission surveys arsenic analytical equipment | |
| CN220019366U (en) | Ammonia concentration detection system | |
| CN105548154A (en) | Image technology-based water ammonia nitrogen concentration automatic detection device | |
| CN203053857U (en) | Automatic sampling spectrophotometer | |
| CN201378146Y (en) | Flow injection-gas-phase molecular absorbing spectrometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |