CN108007908A - Ultralow memory effect atomic fluorescence trace mercury vapourmeter is miniaturized - Google Patents
Ultralow memory effect atomic fluorescence trace mercury vapourmeter is miniaturized Download PDFInfo
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- CN108007908A CN108007908A CN201711377349.7A CN201711377349A CN108007908A CN 108007908 A CN108007908 A CN 108007908A CN 201711377349 A CN201711377349 A CN 201711377349A CN 108007908 A CN108007908 A CN 108007908A
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- mercury
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- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 41
- 230000003446 memory effect Effects 0.000 title claims abstract description 20
- 239000000523 sample Substances 0.000 claims abstract description 34
- 238000005070 sampling Methods 0.000 claims abstract description 30
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 230000004308 accommodation Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 14
- 238000001917 fluorescence detection Methods 0.000 claims description 11
- 239000013307 optical fiber Substances 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 7
- 230000005284 excitation Effects 0.000 claims description 5
- 230000002572 peristaltic effect Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 11
- 239000012159 carrier gas Substances 0.000 abstract description 3
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 2
- 238000004445 quantitative analysis Methods 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 15
- 238000004458 analytical method Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910000033 sodium borohydride Inorganic materials 0.000 description 5
- 239000012279 sodium borohydride Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000918 plasma mass spectrometry Methods 0.000 description 4
- 239000012086 standard solution Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229960002523 mercuric chloride Drugs 0.000 description 1
- LWJROJCJINYWOX-UHFFFAOYSA-L mercury dichloride Chemical compound Cl[Hg]Cl LWJROJCJINYWOX-UHFFFAOYSA-L 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
- G01N21/6404—Atomic fluorescence
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The present invention provides a kind of ultralow memory effect atomic fluorescence trace mercury vapourmeter of micromation, including：Sampling system, gas ballast pump, chemical vapors occur reagent and introduce system, steam generation reaction system, Separate System of Water-jet, atomic fluorescence detecting system, heated for controlling temperature system；Reagent introducing system occurs with the sampling system, the gas ballast pump and the chemical vapors and is respectively communicated with respectively for the sample introduction end of the steam generating system, the sample outlet end of the steam generating system is connected to the Separate System of Water-jet, and the Separate System of Water-jet is connected with the atomic fluorescence detecting system；The heated for controlling temperature system includes electric heater unit, fan heat sink, temperature probe and lagging casing, and the lagging casing forms accommodation space on the outside of the atomic fluorescence detecting system, and the electric heater unit is used to heat for accommodation space.The analyzer of the application adds a carrier gas passage, while ensureing that heavy metal sample fast and effeciently carries out quantitative analysis, reduces the loss of sample ions beam, improves the accuracy and precision of instrument detection.
Description
Technical field
The present invention relates to ultralow memory effect atomic fluorescence trace mercury vapourmeter is miniaturized, belong to Environmental Analytical Chemistry and instrument
Technical field.
Background technology
Mercury is important heavy metal toxic contaminants component, is the pollutant of a kind of global concern.Mercury drinking water, food,
There is presence in seawater, soil, air particle, and easily absorbed by organism, be enriched with and amplify with food chain, to very
The health of more countries and regions causes significant damage, therefore the detection to mercury content in various media is of great significance.
Accurate, the quick measure of mercury element is modern environment monitoring field, safe diet superintendent office, analytical chemistry, sea
The focus and difficult point of foreign scientific attention.Since mercury has volatility, mercurous sample is in sampling, preservation, transport, sample pre-treatments mistake
Journey, inevitably causes content loss；Simultaneously because mercury vapour is easy to condense on detecting instrument surface, is adsorbed in pipeline again, cause
The memory effect of analytical instrument detection, causes mercury element detection inaccurate.The memory effect of mercury is mainly due to suction of the mercury to pipeline
Caused by attached property.
Present inventor has found that the detection of mercury element at present relies primarily on large scale commercial product atomic spectrograph under study for action
Device, including atomic absorption spectrum, hydride generator atomic fluorescence spectrophotometry, inductivity coupled plasma mass spectrometry etc..But these
Equipment instrument and weight are larger, and operating condition requires harshness, are unfavorable for carrying and on-site measurement, can not equally solve mercury element survey
Fixed memory effect problem.Existing instrument and equipment still can not realize the mercury element of live quick, accurate analysis trace.
The content of the invention
The present invention for solve existing mercury element analytical equipment can not field assay, measure memory effect, sensitive for a long time
The problem of low and antijamming capability is poor is spent, ultralow memory effect atomic fluorescence trace, which is miniaturized, the present invention provides one kind surveys mercury
Instrument, the technical solution of use are as follows：
Ultralow memory effect atomic fluorescence trace mercury vapourmeter is miniaturized in one kind, including：
Sampling system, gas ballast pump, chemical vapors occur reagent and introduce system, steam generation reaction system, gas-liquid separation system
System, atomic fluorescence detecting system, heated for controlling temperature system；
Sent out respectively with the sampling system, the gas ballast pump and the chemical vapors at the sample introduction end of the steam generating system
Raw reagent introduces system and is respectively communicated with, and the sample outlet end of the steam generating system is connected to the Separate System of Water-jet, the gas
Liquid separation system is connected with the atomic fluorescence detecting system；
The heated for controlling temperature system includes electric heater unit, fan heat sink, temperature probe and lagging casing, the guarantor
Warm shell forms accommodation space on the outside of the atomic fluorescence detecting system, and the electric heater unit is used to add for accommodation space
Heat.
Further, the steam generating system includes four-way reactor and reaction ring, the sampling system, the carrier gas
Pump and the chemical vapors occur reagent introducing system and are respectively communicated to the four-way reactor sample introduction end, described to react the one of ring
End is connected to the four-way reactor sample outlet end, and the other end of the reaction ring is connected to the Separate System of Water-jet.
Further, the sampling system includes the carrying channel, syringe pump and selection sampling valve sequentially connected, the choosing
Sampling valve is selected with a passage of four-way reactor to be connected.
Further, the gas ballast pump is inert gas, is connected with certain flow rate with a passage of four-way reactor.
Further, reagent introduction passage and the injection that reagent introducing system includes sequentially connecting occur for the chemical vapors
Pump, syringe pump are connected with a passage of four-way reactor.
Further, the Separate System of Water-jet is provided with waste liquid passing away.
Further, atomic fluorescence detecting system includes：Atomic fluorescence detection window, atomic fluorescence fiber spectrometer and swash
Light emitting source, the atomic fluorescence detection window include four passages, and one of passage is connected with the Separate System of Water-jet, and two
A orthogonal passage is connected by optical fiber with excitation source and atomic fluorescence fiber spectrometer respectively, and a remaining passage is
Exhaust gas passing away.
Further, four passages are conplane " ten " word configuration；Alternatively, three in four passages
Passage composition plane is "T"-shaped, last passage is vertical with the plane.
Further, the part of the intelligent acess atomic fluorescence detection window in atomic fluorescence detecting system and atomic fluorescence
Detection window is placed in the heated for controlling temperature system.
Further, peristaltic pump is provided with the waste liquid passing away, the wriggling flow rate pump is more than sampling pump and note
Penetrate the sum of flow velocity of pump.
The present invention builds integrated miniature atomic fluorescence mercury vapourmeter, to overcome by using chemical vapors method for generation
Existing analytical technology bottleneck, by increasing the heated for controlling temperature process of detecting system, it can be achieved that Trace Amount of Mercury in Environmental Samples element is low
Memory effect, quick, field assay.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structure diagram of the ultralow memory effect atomic fluorescence trace mercury vapourmeter of micromation of the embodiment of the present invention；
Fig. 2 is micro- using the ultralow memory effect atomic fluorescence trace mercury vapourmeter detection 0-15 of micromation of the embodiment of the present invention
The canonical plotting that gram per liter mercury solution obtains；
Fig. 3 is micro- using the ultralow memory effect atomic fluorescence trace mercury vapourmeter detection 0-15 of micromation of the embodiment of the present invention
The signal graph that gram per liter mercury solution obtains.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without making creative work, belong to the scope of protection of the invention.
Fig. 1 is the structure diagram of the ultralow memory effect atomic fluorescence trace mercury vapourmeter of micromation of the present invention.Such as Fig. 1
Shown, described device includes sampling system Isosorbide-5-Nitrae, and 6, gas ballast pump 2, chemical vapors occurs reagent and introduces system 3,5, and steam generation is anti-
Answer system 7,8, Separate System of Water-jet 9, atomic fluorescence detecting system 12,13,14,15,16, heated for controlling temperature system 18,19,20,
21；The sample introduction end of the steam generating system respectively with the sampling system Isosorbide-5-Nitrae, 6, the gas ballast pump 2 and the chemical vapors
Generation reagent introduces system 3,5 and is respectively communicated with, and the sample outlet end of the steam generating system is connected to the Separate System of Water-jet 9,
The Separate System of Water-jet 9 is connected with the atomic fluorescence detecting system 12,13,14,15,16；The heated for controlling temperature system bag
Electric heater unit 18, fan heat sink 19, temperature probe 20 and lagging casing 21 are included, the lagging casing 21 is in the atom
The outside of fluorescence detecting system 12,13,14,15,16 forms accommodation space, and the electric heater unit 18 is used to add for accommodation space
Heat.
The sampling system includes：Carrying channel 1, syringe pump pump 4, selects sampling valve 6.Device pipeline is connected as PTFE tube
Road, internal diameter 1mm, outside diameter 1.6mm, the order of connection connect syringe pump 4, the connection selection sampling valve 6 of syringe pump 4, choosing for carrying channel 1
Sampling valve 6 is selected with a passage of four-way reactor 7 to be connected.The syringe pump 4 and selection sampling valve 6 can utilize peristaltic pump and six
Logical sampling valve replaces, and optimum condition is syringe pump 4 and selects sampling valve 6, flow velocity 10mL/min.The gas ballast pump 2 is indifferent gas
Body, is connected with 400mL/min flow velocitys with a passage of four-way reactor 7.Reagent introducing system occurs for the chemical vapors
Reagent introduction passage 3 connects syringe pump 5, and syringe pump 5 is connected with a passage of four-way reactor 7.The syringe pump 5 is available
Peristaltic pump replaces.Optimum condition is syringe pump, flow velocity 1.5mL/min.The steam generating system includes：7 He of four-way reactor
React ring 8.The reaction ring is PTFE material pipelines, and internal diameter 1mm, outside diameter 1.6mm, length 50cm, is wound up as diameter 4cm rings
Shape.Three passages of four-way reactor are connected with sampling valve 6, carrier gas 7, the syringe pump 5 of steam generation reagent passage connection respectively,
4th passage is connected with reaction ring 8, and reaction ring 8 is connected with gas-liquid separator 9.The Separate System of Water-jet system is gas-liquid point
From device 9, separation cavity is less than 2mL.
Gas-liquid separator 9 is connected with reaction ring 8, atomic fluorescence detection window 12 and waste liquid passing away 11 respectively.Institute
Stating atomic fluorescence detecting system includes：Atomic fluorescence detection window 12, atomic fluorescence fiber spectrometer 13, excitation source --- mercury
Element hollow cathode lamp 14 and diameter 1.0mm optical fiber 15,16.Optical fiber 14 is connected with mercury excitation source 14, optical fiber 15 and fluorescence light
Optical fiber spectrograph 13 is connected.The atomic fluorescence detection window 12 contains four passages, one of passage and 9 phase of gas-liquid separator
Even, two orthogonal passages are connected with optical fiber 15 and optical fiber 16 respectively, and a remaining passage is as exhaust gas passing away 17.
Four passages can be conplane " ten " word configuration；Or three passages form same plane T-shape, last
The passage configuration vertical with the plane；Optimum condition forms same plane T-shape for three passages, another passage is flat with this
The vertical configuration in face.The atomic fluorescence fiber spectrometer 13 can utilize photomultiplier to replace, and optimum condition is atomic fluorescence
Fiber spectrometer 13.
Optical fiber 15 and optical fiber 16 in atomic fluorescence detecting system access part and the atom of atomic fluorescence detection window 12
Fluoroscopic examination window 12 is placed in heated for controlling temperature system.Detection interval twice, heated for controlling temperature eliminate memory effect temperature and are taken the photograph for 380
Family name's degree, detection process temperature are reduced to 40 degrees Celsius.The waste liquid passing away includes peristaltic pump 10 and waste liquid discharge line 11.Institute
State wriggling flow rate pump and the sum of flow velocity of pump 5, about 12mL/min are introduced more than sampling pump 4 and steam generation reagent.The gas
Passing away 17 is discharged into air after discharging exhaust gas to fume hood, or absorption processing.Wherein, steam generation reagent introduces pump 5 and is used for
KBH4 reagents are introduced, the mercury in sample to be tested for reducing sampling system entrance, generates mercuryvapour, be separated from water, detect mercury
Simple substance steam.Fig. 2 and Fig. 3 is respectively the ultralow memory effect atomic fluorescence trace mercury vapourmeter of micromation using the embodiment of the present invention
Detect canonical plotting and signal graph that 0-15 micrograms are obtained per mercuric chloride solution.
Embodiment 1：
Gathering actual sample includes a variety of representative actual samples of river water, well water, snow-broth, agricultural land soil sample four.Respectively
Simply pre-processed, key step includes：
1) water sample, is directly filtered using 0.45 micron membrane filter, adds certain volume hydrochloric acid acidified sample, and final acidity is
0.1mol/L。
2) pedotheque, weighs 1.000 grams of pedotheques, adds 10mL, and 0.1mol/L aqueous hydrochloric acid solutions carry out ultrasonic leaching
Carry.Leaching liquor is filtered using 0.45 micron membrane filter.Prepare 0,0.1,1,2,5,10,15 μ g/L of mercury standard solution.
After the completion of sample treatment directly quantitative analysis, acquired results and this hair are carried out using inductivity coupled plasma mass spectrometry
Bright device testing result carries out result comparison.
Specifically detection and analytical procedure are apparatus of the present invention：
Step 1：Shift mercury standard solution and actual sample solution to be measured is spare to sample introduction bottle.
Step 2：Sodium borohydride solution is prepared, 0.5% (w/w) NaOH aqueous solutions is prepared first, is then dissolved in NaBH4
The alkaline solution, the concentration of NaBH4 is 1% (w/w).
Step 3：Heated for controlling temperature system is opened, is heated to 380 DEG C, argon gas is passed through and keeps 1min, rinse-system.Then drop
Temperature is to 40 DEG C.
Step 4：Open detection system, sample intake passage are pumped into deionized water solution first, and sodium borohydride is with 1.5mL/
Min flow velocitys enter system, keep signal stabilization.
Step 5：The mercurous solution to be measured of 0.50mL, enters system, flow velocity 10mL/min by sampling valve (6).
Step 6：Record produces fluorescence signal.
Step 7：Repeat step three, four, five, six to all standard mercury solutions and actual sample to be tested measure terminate.
Step 8：Sample channel and sodium borohydride passage are converted into deionized water solution, and cleaning system, closes system.
Measure mercury standard solution analysis result is as shown in table 2 for a long time.Should be the result shows that present apparatus analysis memory effect pole
Low, the larger sample analysis error of concentration difference is smaller, is measured suitable for mercury element in a large amount of actual environment samples.
Actual environment water sample analysis result is as shown in table 1.Should be the result shows that the present apparatus analyzes a variety of environmental water sample results
It is consistent with inductivity coupled plasma mass spectrometry analysis result, it was demonstrated that this method reliable results, accurate.
1 inductivity coupled plasma mass spectrometry of table and the contrast of apparatus of the present invention analysis environments water sample and pedotheque mercury content
Table 2 measures mercury standard solution memory effect analysis result for a long time
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical solution spirit and
Scope.
Claims (10)
1. ultralow memory effect atomic fluorescence trace mercury vapourmeter is miniaturized in one kind, it is characterised in that including：
Sampling system (Isosorbide-5-Nitrae, 6), gas ballast pump (2), chemical vapors occur reagent and introduce system (3,5), steam generation reaction system
(7,8), Separate System of Water-jet (9), atomic fluorescence detecting system (12,13,14,15,16), heated for controlling temperature system (18,19,20,
21)；
The sample introduction end of the steam generating system respectively with the sampling system (Isosorbide-5-Nitrae, 6), the gas ballast pump (2) and the chemistry
Steam generation reagent introduces system (3,5) and is respectively communicated with, and the sample outlet end of the steam generating system is connected to the gas-liquid separation
System (9), the Separate System of Water-jet (9) connect with the atomic fluorescence detecting system (12,13,14,15,16)；
The heated for controlling temperature system includes electric heater unit (18), and fan heat sink (19), temperature probe (20) and insulation are outer
Shell (21), the lagging casing (21) form on the outside of the atomic fluorescence detecting system (12,13,14,15,16) and accommodate sky
Between, the electric heater unit (18) is used to heat for accommodation space.
2. mercury vapourmeter according to claim 1, it is characterised in that the steam generating system include four-way reactor (7) and
React ring (8), the sampling system (Isosorbide-5-Nitrae, 6), the gas ballast pump (2) and the chemical vapors occur reagent introducing system (3,
5) four-way reactor (7) the sample introduction end is respectively communicated to, one end of the reaction ring (8) is connected to the four-way reactor
(7) sample outlet end, the other end of the reaction ring (8) are connected to the Separate System of Water-jet (9).
3. mercury vapourmeter according to claim 2, it is characterised in that the sampling system (Isosorbide-5-Nitrae, 6) includes the load sequentially connected
Circulation road (1), syringe pump (4) and selection sampling valve (6), the selection sampling valve (6) and a passage of four-way reactor (7)
It is connected.
4. mercury vapourmeter according to claim 2, it is characterised in that the gas ballast pump (2) is inert gas, with certain flow rate with
One passage of four-way reactor (7) is connected.
5. mercury vapourmeter according to claim 2, it is characterised in that the chemical vapors occurs reagent and introduces system including sequentially
The reagent introduction passage (3) and syringe pump (5) of connection, syringe pump (5) are connected with a passage of four-way reactor (7).
6. mercury vapourmeter according to claim 1 or claim 2, it is characterised in that the Separate System of Water-jet (9) is provided with waste liquid discharge
Passage (11).
7. mercury vapourmeter according to claim 1 or claim 2, it is characterised in that atomic fluorescence detecting system (12,13,14,15,16)
Including：Atomic fluorescence detection window (12), atomic fluorescence fiber spectrometer (13) and excitation source (14), the atomic fluorescence inspection
Surveying window (12) includes four passages, and one of passage is connected with the Separate System of Water-jet (9), and two orthogonal logical
Road is connected by optical fiber with excitation source (14) and atomic fluorescence fiber spectrometer (13) respectively, and a remaining passage is arranged for exhaust gas
Go out passage (17).
8. mercury vapourmeter according to claim 1 or claim 2, it is characterised in that four passages are conplane " ten " word structure
Type；Alternatively, three passages in four passages are formed, plane is "T"-shaped, last passage is vertical with the plane.
9. according to one of the claim 1-8 mercury vapourmeters, it is characterised in that atomic fluorescence detecting system (12,13,14,15,
16) part of the intelligent acess atomic fluorescence detection window (12) in is placed in the heating with atomic fluorescence detection window (12) and controls
In the accommodation space of warm system.
10. mercury vapourmeter according to claim 6, it is characterised in that be provided with peristaltic pump on the waste liquid passing away (11)
(10), the wriggling flow rate pump is more than the sum of flow velocity of sampling pump (4) and syringe pump (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711377349.7A CN108007908A (en) | 2017-12-19 | 2017-12-19 | Ultralow memory effect atomic fluorescence trace mercury vapourmeter is miniaturized |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711377349.7A CN108007908A (en) | 2017-12-19 | 2017-12-19 | Ultralow memory effect atomic fluorescence trace mercury vapourmeter is miniaturized |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5597535A (en) * | 1994-02-25 | 1997-01-28 | Tekran Inc. | Apparatus for detecting mercury |
| CN101135643A (en) * | 2007-10-17 | 2008-03-05 | 东北大学 | Miniaturization atomic fluorescent testing apparatus |
| CN204807452U (en) * | 2015-05-21 | 2015-11-25 | 李福华 | Dry type vapour and liquid separator for atomic fluorescence spectrophotometer |
| CN207689371U (en) * | 2017-12-19 | 2018-08-03 | 农业部环境保护科研监测所 | Ultralow memory effect atomic fluorescence trace mercury vapourmeter is miniaturized |
-
2017
- 2017-12-19 CN CN201711377349.7A patent/CN108007908A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5597535A (en) * | 1994-02-25 | 1997-01-28 | Tekran Inc. | Apparatus for detecting mercury |
| CN101135643A (en) * | 2007-10-17 | 2008-03-05 | 东北大学 | Miniaturization atomic fluorescent testing apparatus |
| CN204807452U (en) * | 2015-05-21 | 2015-11-25 | 李福华 | Dry type vapour and liquid separator for atomic fluorescence spectrophotometer |
| CN207689371U (en) * | 2017-12-19 | 2018-08-03 | 农业部环境保护科研监测所 | Ultralow memory effect atomic fluorescence trace mercury vapourmeter is miniaturized |
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