CN107860640A - A kind of Portable heating resolution instrument and its application method for water sample pretreatment - Google Patents
A kind of Portable heating resolution instrument and its application method for water sample pretreatment Download PDFInfo
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- CN107860640A CN107860640A CN201711067868.3A CN201711067868A CN107860640A CN 107860640 A CN107860640 A CN 107860640A CN 201711067868 A CN201711067868 A CN 201711067868A CN 107860640 A CN107860640 A CN 107860640A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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Abstract
The invention discloses a kind of Portable heating resolution instrument and its application method for water sample pretreatment, it is related to environmental monitoring technology field.It is connected in use, instrument will be cleared up by power switching line with lithium battery, opens cell switch, adjust the output voltage adjusting knob of automatic lifting piezoelectricity source module first, by SR and pause button, sets the working time；Water sample to be measured is taken to add digestion agent in glass tube, by head space bottle cap screwing, insert the digestion tube slot of heater, open heater button, heater indicator light is bright, then by SR, when the time relay reaches setting time, water sample resolution finishes again.Manufacturing process of the present invention is simple, using external Large Copacity low pressure lithium battery power supply, safe ready, and each heater can work independently, save, efficiently, it is simple to operate, it can whenever and wherever possible use, be adapted to the quick heating resolution processing in the field of the water samples such as total nitrogen, total phosphorus, heavy metal, TOC, COD, urea and scene.
Description
Technical field
The present invention relates to environmental monitoring technology field, and in particular to a kind of Portable heating for water sample pretreatment
Clear up instrument and its application method.
Background technology
For a long time, water quality detection be always the most important thing of environmental monitoring work, especially total nitrogen, total phosphorus, heavy metal,
The detection of the conventional indexs such as total Organic carbon (TOC), COD manages surroundings such as the surface water, sewage more frequent, important.By
Big, the complicated component in various samples composition difference, it must often pass through necessary resolution and handle exclusive PCR or reaction conversion.Water sample
Digestion procedure mainly has heated oxide method, microwave method, photocatalytic method etc., laboratory routinely using high-pressure sterilizing pot resolution total nitrogen,
Total phosphorus water sample, 120-124 DEG C is maintained the temperature at, cleared up 30 minutes, operating process is complicated, and equipment is heavy.
Such as Guo's appearance pearl will carry out the resolution of total nitrogen sample, temperature using hydrothermal reaction kettle in electrically heated drying cabinet heating means
125 DEG C, heating 30min (Guo appearance pearl, Deng Feiyue, Yong Fuzeng, the improvement of determination of total nitrogen content method in water, Chinese water supply and drainage,
2007, (22)：82).Portable Hash numeral digestion device, special digestive reagent bag is coordinated to be used for the resolution of total nitrogen sample, resolution
105 DEG C of temperature, resolution 30min (comparison and analysis of Yu Jiaran, Du Le, Shang Yina, two kinds of determination of total nitrogen content methods, environment and hair
Exhibition, 2017, (3)：190) it, must indoors operate, use.Hydroxyl free is produced using ozone generator and uviol lamp synergy
Phosphorous, nitrogen-containing compound is oxidized to high price orthophosphates and nitrate, digestion time 25min (Ding Mingjun, Yang Hui by base (OH)
In, the ion chromatography method of total phosphorus and total nitrogen content in water, analytical chemistry, 2012, (3)：381), equipment volume is big, operation
It is complicated.Measure (Pu Qingsan, Zhang Zhuhao, the Shi Shuo of the third total nitrogens that have studied using COD rapid-digestion methods in surface water body of Pu Qing
Deng, the total nitrogen in COD rapid-digestions method measure surface water body, Three Gorges ECOLOGICAL ENVIRONMENTAL MONITORING, 2017, (1)：58), digestion time
1h, relative error ± 0.57%, recovery of standard addition are 96.75% -103.98%.The surface water and sewage heavy metal analysis have to pass through
Resolution processing oxidation Decomposition organic matter, digestion agent typically use mixed strong acids, and sour molten method is evaporated again using electric hot plate heating,
Processing unit is simple, but equipment weight, and the thermal efficiency is low, and the heat time, length in laboratory, it is necessary to carry out, energy waste is serious.
COD detects sample treatment generally use heating reflux method, often works more than two hours, Wei little Ling etc. utilizes microwave
Digestion procedure have studied COD in waste water measure (Wei little Ling, Gong Qi, Lv Hengyi etc., Microwave Digestion Quick Determination of COD in Wastewater,
Treatment of Industrial Water, 2007, (9)：66), as a result well.In recent years, rapid-digestion technique study (HJ/T399- in the ascendant
2007) (Guo Dongfeng, rapid-digestion Industrial Wastewater by Spectrophotometric COD reagent are inquired into, Guangdong chemical industry, and 2014, (15)：
254), various rapid-digestion instrument arise at the historic moment, minute heat time 15-30, and multiple resolution holes work simultaneously, COD inspections
Surveying result and standard method has certain uniformity.Above COD Convention digestions and rapid-digestion method all must be in laboratories
Carry out, resolution hole can not work independently, and energy consumption is big.
TOC sample pre-treatments mode includes wet oxidation process and combustion oxidation method, is all that organic matter is converted into titanium dioxide
Carbon, damp process has heated oxide, UV- persulfate oxidations, and (Qi Wenqi, Sun Zongguang, Chen Weijun etc. and its exist at total organic carbon automatically
The development of line monitor, Modern Scientific Instruments, 2005, (6)：27) and hydroxyl radical free radical aoxidizes (Yang Dan, Pan Jianming, total organic carbon
The present Research and progress of analytical technology, Zhejiang Normal University's journal (natural science edition), 2008, (4)：441), it is equipped with special
Oxidation treatment device collect CO2, then detected by non-dispersion infrared instrument, equipment is complicated, expensive equipment, must grasp indoors
Make.
Obviously, the sample-processing equipment such as above highly energy-consuming, heavy, the digestion time length of complex operation or equipment and method without
Method meets the needs of the quick analysis detection in field or scene.It is based on《National Program for Medium-to Long-term Scientific and Technological Development
(2006-2020)》Point out that " primary study exploitation is big in preferential theme " global environmental change monitors and countermeasure " in environmental area
The macroscopic view requirement of yardstick environmental change accurate measurements technology ", and foundation《The development in science and technology of national environmental protection Eleventh Five-Year Plan is advised
Draw》In " strengthen the modern times adopt, sample making technology and modern environment monitoring analytical technology " research contents, exploitation Portable water sample heating disappears
Solve device and its application method is particularly necessary.
The content of the invention
It is in view of the shortcomings of the prior art, a kind of for the portable of water sample pretreatment the present invention seeks to be to provide
Formula heating resolution instrument and its application method, reasonable in design, manufacturing process is simple, small volume, in light weight, makes whenever and wherever possible
With safe ready, efficient energy-saving is easy to operate quick, is suitable for field and onsite application, practical, use easy to spread.
To achieve these goals, the present invention is to realize by the following technical solutions：One kind is used for water sample and pre-processed
Portable heating resolution instrument, including shell, digestion tube and installation control circuit inside the housing, the control circuit is by electricity
Supply socket, SR, the time relay, pause button, automatic lifting piezoelectricity source module, heater button, heater instruction
Lamp, heater power source plug and heater composition, the input of automatic lifting piezoelectricity source module pass through the 3rd power line and power supply
Socket connects, and the output end of automatic lifting piezoelectricity source module is connected by second source line with the input of the time relay, from
Output voltage adjusting knob, the SR, pause button and the time relay pair are provided with dynamic boost-buck power module
The binding post answered connects, and the parallel circuit and heater button of heater indicator light and heater power source plug are composed in series one
Heating unit, 2-8 heating unit parallel connection pass through heating by the output end of the first power line turn-on time relay, heater
The grafting of device slot is arranged on the top panel of shell, is plugged with digestion tube in heater, and the shell side is provided with multiple the
One heat emission hole, the second heat emission hole.
Preferably, described heater is plug-in structure, heater by silica gel sleeve pipe, digestion tube slot, heating film,
Heater power source socket is formed, and heater power source socket is connected by the 4th power line with heating film, heater power source socket and
Heater power source plug is fitting to connection, and the heating film is close to the placement of digestion tube slot inwall, and heater power source socket is through simultaneously
Digestion tube slot bottom center is fixed on, the digestion tube is plugged in digestion tube slot.
Preferably, described digestion tube includes glass tube, head space bottle cap, silica gel pad, top is connected with glass tube
Empty cap, ml headspace bottle cap surface are provided with silica gel pad, and the glass tube uses upper coarse and lower fine high temperature resistant screw socket glass tube, glass
Glass tube capacity amount is 20-50ml, and the head space aperture of the head space bottle cap is 5-15mm, and the center of the silica gel pad, which is pricked, 2-
8 pin holes.
As pre-selection, described heater slot is 2-8 mutually isostructural inserting slot construction, each heater slot with it is outer
The integrated structure of hull shape, the heater power source plug pass through and are fixed on the bottom centre position of heater slot.
Preferably, described power outlet is connected by power switching line with external lithium battery, power outlet and lithium
Cell switch is provided with the power switching line circuit of battery connection, the charging voltage of lithium battery is 110-220V, output voltage
For 5-24V, output current 5-15A, battery capacity 10-80Ah.
Preferably, the input voltage of described automatic lifting piezoelectricity source module is 10-32V, output voltage 10-60V,
Output current is 5-10A, and operating temperature is -40 to+85 DEG C.
Preferably, described heating film uses polyimide film, operating voltage 10-36V, power 5-40W.
Preferably, the described time relay, automatic lifting piezoelectricity source module, the first power line, second source line,
Three power lines are each attached to the inner space of tool housing, and described power outlet, SR, pause button, heater are opened
Close, heater indicator light is respectively mounted and is fixed on instrument top panel.
A kind of application method of Portable heating resolution instrument for water sample pretreatment, its method are：Pass through power supply transfer
Line will clear up instrument and will be connected with lithium battery, open cell switch, adjust the output voltage regulation of automatic lifting piezoelectricity source module first
Knob, it is 12-36V to make output voltage, by SR and pause button, sets working time 10-60min；5-10ml is taken again
Water sample to be measured adds digestion agent, by head space bottle cap screwing, inserts the digestion tube slot of heater, open heater in glass tube
Switch, heater indicator light is bright, then by SR, when the time relay reaches setting time, water sample resolution finishes.
Preferably, described water sample to be measured is the surface water, underground water, seawater, sewage, production and domestic water, it is described
Digestion agent selects according to the resolution condition of different determinands, can be purchased by market.
Beneficial effects of the present invention：Apparatus structure is ingenious in design, simple to operate quick, is suitable for field and onsite application,
The field or the preceding place of scene heating resolution of the various ingredients water sample such as total nitrogen, total phosphorus, heavy metal, TOC, COD, urea can be met simultaneously
Reason, had both met the development situation of China's analysis and detection technology, also to reducing labor intensity, understand pollution situation and environment pipe in time
Manage significant.
Brief description of the drawings
Describe the present invention in detail with reference to the accompanying drawings and detailed description；
Fig. 1 is the structural representation of present invention resolution instrument；
Fig. 2 is the circuit diagram of present invention resolution instrument.
Embodiment
To be easy to understand the technical means, the inventive features, the objects and the advantages of the present invention, with reference to
Embodiment, the present invention is expanded on further.
Reference picture 1-2, present embodiment use following technical scheme：A kind of portable heating for water sample pretreatment
Heat resolution instrument, including shell 4, digestion tube and the control circuit inside shell 4, the control circuit by power outlet 5,
SR 6, the time relay 7, pause button 8, automatic lifting piezoelectricity source module 18, heater button 13, heater instruction
Lamp 14, heater power source plug 16 and heater 11 form, the time relay 7, automatic lifting piezoelectricity source module 18, the first power supply
Line 9, second source line 17, the 3rd power line 20 are each attached to the inner space of tool housing 4, described power outlet 5, reset
Button 6, pause button 8, heater button 13, heater indicator light 14, which are respectively mounted, to be fixed on instrument top panel, the side of shell 4
It is provided with multiple first heat emission holes 10, the second heat emission hole 12；The input of automatic lifting piezoelectricity source module 18 passes through the 3rd power supply
Line 20 connects with power outlet 5, and the output end of automatic lifting piezoelectricity source module 18 passes through second source line 17 and the time relay 7
Input be connected, be provided with output voltage adjusting knob 19 on automatic lifting piezoelectricity source module 18, the SR 6, temporarily
Stop button 8 with 7 corresponding binding post of the time relay to connect, the electricity in parallel with heater power source plug 16 of heater indicator light 14
Road and heater button 13 are composed in series a heating unit, and 2-8 heating unit parallel connection passes through the turn-on time of the first power line 9
The output end of relay 7；Described heater 11 is plug-in structure, heater 11 by silica gel sleeve pipe 21, digestion tube slot 22,
Heating film 23, heater power source socket 25 are formed, and heater power source socket 25 is connected by the 4th power line 24 with heating film 23,
Heater power source socket 25 is fitting to connection with heater power source plug 16, and the heating film 23 is close to the inwall of digestion tube slot 22 and put
Put, heater power source socket 25 passes through and is fixed on the bottom center of digestion tube slot 22, and the digestion tube is plugged on digestion tube
In slot 22, heater 11 is arranged on by the grafting of heater slot 15 on the top panel of shell 4, is plugged with and is disappeared in heater 11
Xie Guan.
Described digestion tube includes glass tube 26, head space bottle cap 27, silica gel pad 28, and head space is connected with glass tube 26
Bottle cap 27, the surface of head space bottle cap 27 are provided with silica gel pad 28, and the glass tube 26 uses upper coarse and lower fine high temperature resistant screw socket glass
Glass pipe, the capacity of glass tube 26 are 20-50ml, and the head space aperture of the head space bottle cap 27 is 5-15mm, the silica gel pad 28
Center, which is pricked, 2-8 pin hole.
It is worth noting that, described heater slot 15 is 2-8 mutually isostructural inserting slot construction, each heater is inserted
Groove 15 forms integral structure with shell 4, and the heater power source plug 1 is passed through and is fixed in the bottom of heater slot 15
Heart position.
In addition, described power outlet 5 is connected by power switching line 3 with external lithium battery 1, power outlet 5 and lithium
Cell switch 2 is provided with the circuit of power switching line 3 that battery 1 connects, the charging voltage of lithium battery 1 is 110-220V, exported
Voltage is 5-24V, output current 5-15A, battery capacity 10-80Ah.
The described use DP4830S types of the time relay 7, panel type, time control scope 0-99h, operating voltage are
12-24V。
Described automatic lifting piezoelectricity source module 18 is DC-DC8A types, and its input voltage is 10-32V, and output voltage is
10-60V, output current 5-10A, operating temperature are -40 to+85 DEG C.
Described heating film 23 uses polyimide film, operating voltage 10-36V, power 5-40W.
A kind of application method of Portable heating resolution instrument for water sample pretreatment, its method are：Pass through power supply transfer
Line 3 is connected instrument is cleared up with lithium battery 1, opens cell switch 2, adjusts the output voltage of automatic lifting piezoelectricity source module 18 first
Adjusting knob 19, it is 12-36V to make output voltage, by SR 6 and pause button 8, sets working time 10-60min；Again
5-10ml water samples to be measured are taken to add digestion agent in glass tube 26, head space bottle cap 27 is screwed, the digestion tube of insertion heater 11 is inserted
Groove 22, heater button 13 is opened, heater indicator light 14 is bright, then by SR 6, when the time relay 7, which reaches, to be set
Between, water sample resolution finishes.
It is worth noting that, described water sample to be measured is the surface water, underground water, seawater, sewage, production and domestic water,
The digestion agent selects according to the resolution condition of different determinands, can be purchased by market.
Present embodiment manufacturing process is simple, small volume, in light weight, is supplied using external Large Copacity low pressure lithium battery
Electricity, use whenever and wherever possible, safe ready, and each heater can work independently, efficient energy-saving is simple to operate, quick, especially
It is suitable for field and onsite application, instrument can meet total nitrogen, total phosphorus, total metal content, total Organic carbon simultaneously by external lithium battery
(TOC), the quick heating resolution pre-treatment in the field of the various ingredients such as COD, urea detection water sample or scene, had both met China's analysis
The development situation of detection technique, also understand pollution situation to reducing labor intensity, in time and environmental management is significant, have
Wide market application foreground.
Embodiment 1：A kind of application method (detection of river total nitrogen) of Portable heating resolution instrument for water sample pretreatment：
Mounted resolution instrument is connected by power switching line 3 with 12V 30Ah lithium batteries 1, opens cell switch 2, regulation is defeated
Going out voltage-regulation knob 19 makes output voltage be 20V, by SR 6 and pause button 8, sets working time 20min.Take
5ml rivers add total nitrogen resolution powder, head space bottle cap 27 are screwed, insertion digestion tube slot 22, open heating in glass tube 26
Device switch 13, heater indicator light 14 is bright, then by SR 6, heating starts, and when the arrival setting time of the time relay 7, adds
Heat stops, and water sample resolution is finished, and digestion tube is placed in cold water and cools down 5min, is using spectrophotometric determination total nitrogen concentration
2.56mg/L, it is coincide with the result 2.75mg/L of microwave digestion method (GB 17378.4-1998), and digestion time contracts
Short 10 minutes, operation is also simply too much.The instrument can move whenever and wherever possible, very convenient.
Embodiment 2：A kind of application method (sewage TOC detections) of Portable heating resolution instrument for water sample pretreatment：
Mounted resolution instrument is connected by power switching line 3 with 12V 30Ah lithium batteries 1, opens cell switch 2, regulation is defeated
Going out voltage-regulation knob 19 makes output voltage 20V, by SR 6 and pause button 8, sets working time 10min.Take 5ml
Certain enterprise's sewage adds TOC digestion agents, head space bottle cap 27 is screwed, insertion digestion tube slot 22, open heating in glass tube 26
Device switch 13, heater indicator light 14 is bright, then by SR 6, heating starts, and when the arrival setting time of the time relay 7, adds
Heat stops, and water sample resolution is finished, and digestion tube is placed in cold water and cools down 5min, adds TOC detection agents, is mixed 2 minutes, using just
It is 46.3mg/L to take formula water quality testing meter measure TOC concentration, the detection with non-dispersion infrared detection method (HJ/T 71-2001)
As a result 44.9mg/L is consistent.Whole detection process 20min, time shorten half than standard method.
Embodiment 3：A kind of application method of Portable heating resolution instrument for water sample pretreatment (examine by swimming pool water urea
Survey)：
Mounted resolution instrument is connected by power switching line 3 with 12V 30Ah lithium batteries 1, opens cell switch 2, regulation is defeated
Going out voltage-regulation knob 19 makes output voltage 20V, by SR 6 and pause button 8, sets working time 15min.Take 5ml
Certain swimming-pool water adds urea detection agent, head space bottle cap 27 is screwed, insertion digestion tube slot 22, open and add in glass tube 26
Hot device switch 13, heater indicator light 14 is bright, then by SR 6, heating starts, when the time relay 7 reaches setting time,
Heating stops, and water sample resolution is finished, and digestion tube is placed in cold water and cools down 5min, and urea is determined using portable water quality detector
Concentration is 0.96mg/L, the testing result 1.10mg/L basic one with urea standard detecting method (GB/T 18204.29-2000)
Cause.Digestion time is only a quarter of standard method digestion time, and can detected in edge of pool, very just
Just, in time.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of Portable heating resolution instrument for water sample pretreatment, it is characterised in that including shell (4), digestion tube and peace
The control circuit internal mounted in shell (4), the control circuit is by power outlet (5), SR (6), the time relay
(7), pause button (8), automatic lifting piezoelectricity source module (18), heater button (13), heater indicator light (14), heater
Attaching plug (16) and heater (11) composition, the input of automatic lifting piezoelectricity source module (18) pass through the 3rd power line (20)
Connect with power outlet (5), the output end of automatic lifting piezoelectricity source module (18) passes through second source line (17) and time relay
The input of device (7) is connected, and output voltage adjusting knob (19), the reset are provided with automatic lifting piezoelectricity source module (18)
Button (6), pause button (8) binding post corresponding with the time relay (7) connect, heater indicator light (14) and heater electricity
The parallel circuit and heater button (13) of source plug (16) are composed in series a heating unit, 2-8 heating unit and UNICOM
The output end of the first power line (9) turn-on time relay (7) is crossed, heater (11) is installed by heater slot (15) grafting
On the top panel of shell (4), digestion tube is plugged with heater (11), shell (4) side is provided with multiple first and dissipated
Hot hole (10), the second heat emission hole (12).
2. a kind of Portable heating resolution instrument for water sample pretreatment according to claim 1, it is characterised in that described
The time relay (7), automatic lifting piezoelectricity source module (18), the first power line (9), second source line (17), the 3rd power supply
Line (20) is each attached to the inner space of tool housing (4), described power outlet (5), SR (6), pause button
(8), heater button (13), heater indicator light (14) are respectively mounted and are fixed on instrument top panel.
3. a kind of Portable heating resolution instrument for water sample pretreatment according to claim 1, it is characterised in that described
Heater slot (15) be provided with 2-8, each mutually isostructural heater slot (15) and shell (4) are integral type knot
Structure, the heater power source plug (1) pass through and are fixed on the bottom centre position of heater slot (15).
4. a kind of Portable heating resolution instrument for water sample pretreatment according to claim 1, it is characterised in that described
Heater (11) be plug-in structure, heater (11) by silica gel sleeve pipe (21), digestion tube slot (22), heating film (23),
Heater power source socket (25) is formed, and heater power source socket (25) is connected by the 4th power line (24) with heating film (23),
Heater power source socket (25) is fitting to connection with heater power source plug (16), and the heating film (23) is close to digestion tube slot
(22) inwall is placed, and heater power source socket (25) passes through and is fixed on digestion tube slot (22) bottom center, the resolution
Pipe is plugged in digestion tube slot (22).
5. a kind of Portable heating resolution instrument for water sample pretreatment according to claim 1, it is characterised in that described
Digestion tube include glass tube (26), head space bottle cap (27), silica gel pad (28), glass tube is connected with head space bottle cap on (26)
(27), head space bottle cap (27) surface is provided with silica gel pad (28), and the glass tube (26) uses upper coarse and lower fine high temperature resistant spiral shell
Mouthful glass tube, glass tube (26) capacity is 20-50ml, and the head space aperture of the head space bottle cap (27) is 5-15mm, the silica gel
The center of pad (28), which is pricked, 2-8 pin hole.
6. a kind of Portable heating resolution instrument for water sample pretreatment according to claim 1, it is characterised in that described
Power outlet (5) be connected by power switching line (3) with external lithium battery (1), power outlet (5) and lithium battery (1) are even
It is provided with cell switch (2) on power switching line (3) circuit connect, the charging voltage of the lithium battery (1) is 110-220V, defeated
Go out voltage be 5-24V, output current 5-15A, battery capacity 10-80Ah.
7. a kind of Portable heating resolution instrument for water sample pretreatment according to claim 1, it is characterised in that described
The input voltage of automatic lifting piezoelectricity source module (18) be 10-32V, output voltage 10-60V, output current 5-10A,
Operating temperature is -40 to+85 DEG C.
8. a kind of Portable heating resolution instrument for water sample pretreatment according to claim 4, it is characterised in that described
Heating film (23) use polyimide film, operating voltage 10-36V, power 5-40W.
A kind of 9. application method of Portable heating resolution instrument for water sample pretreatment, it is characterised in that：Its method is：Pass through
Power switching line (3) will clear up instrument and will be connected with lithium battery (1), open cell switch (2), adjust automatic lifting voltage source mould first
The output voltage adjusting knob (19) of block (18), it is 12-36V to make output voltage, by SR (6) and pause button (8), if
Determine working time 10-60min；5-10ml water samples to be measured are taken to add digestion agent in glass tube (26), head space bottle cap (27) is revolved again
Tightly, the digestion tube slot (22) of heater (11) is inserted, opens heater button (13), heater indicator light (14) is bright, then presses
SR (6), when the time relay (7) reaches setting time, water sample resolution finishes.
10. a kind of application method of Portable heating resolution instrument for water sample pretreatment according to claim 9, it is special
Sign is, described water sample to be measured is the surface water, underground water, seawater, sewage, production and domestic water, the digestion agent according to
The resolution condition selection of different determinands, can be purchased by market.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108593417A (en) * | 2018-04-10 | 2018-09-28 | 深圳准诺检测有限公司 | A kind of experimental provision and its method of photocatalytic method resolution water sample |
| CN111239275A (en) * | 2020-01-22 | 2020-06-05 | 广西大学 | Method for measuring total phosphorus content of soil or sludge |
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Application publication date: 20180330 |