CN109342349A - A kind of TOC wet-chemical analysis device and method - Google Patents
A kind of TOC wet-chemical analysis device and method Download PDFInfo
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- CN109342349A CN109342349A CN201811443193.2A CN201811443193A CN109342349A CN 109342349 A CN109342349 A CN 109342349A CN 201811443193 A CN201811443193 A CN 201811443193A CN 109342349 A CN109342349 A CN 109342349A
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- 238000004458 analytical method Methods 0.000 title claims abstract description 19
- 239000000126 substance Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title abstract description 13
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 34
- 230000029087 digestion Effects 0.000 claims abstract description 29
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 claims abstract description 18
- 239000006096 absorbing agent Substances 0.000 claims abstract description 16
- 238000009614 chemical analysis method Methods 0.000 claims abstract description 4
- 239000003814 drug Substances 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 238000005273 aeration Methods 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 42
- 229910002092 carbon dioxide Inorganic materials 0.000 description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052806 inorganic carbonate Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004457 water analysis Methods 0.000 description 1
Classifications
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- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of TOC wet-chemical analysis devices, including multi-pass inline valve, peristaltic pump, UV digestion device, blow-off tube, NDIR detector and air pump.The bottom of the blow-off tube is connect with air pump and peristaltic pump respectively, air pump and blow-off tube bottom junctions are equipped with CO2 absorber, the multi-pass inline valve is connect with peristaltic pump, and the top of the blow-off tube is connect with NDIR detector and UV digestion device respectively, and UV digestion device is connect with multi-pass inline valve.In the middle part of multi-pass inline valve, blow-off tube and blow-off tube lower part all connects emptying pipeline.The invention also discloses a kind of TOC wet-chemical analysis methods.The invention has the beneficial effects that: structurally reasonable, analytic process high degree of automation, quickly, efficiently, analytic process is not necessarily to high temperature, instrument long service life to TOC analytic process.
Description
Technical field
The present invention relates to water analysis technical field, in particular to a kind of TOC wet-chemical analysis device and method.
Background technique
Domestic and international existing TOC(total organic carbon) analysis method is mainly non-dispersive infrared absorption method, the party
Though the sensitivity of method is high, have the disadvantage in that sample needs to be made organic compound by high-temperature S removal through high-temperature combustion tube
It being transformed into inorganic carbonate as carbon dioxide, carbon dioxide generated successively imports non-dispersion infrared detector, thus
TOC in water is measured, and the temperature of high-temperature combustion tube is up to 900 DEG C, minimum temperature is also required to 150 DEG C, for general measure, mistake
High temperature is easily damaged instrument.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of analytic process quickly, efficiently and be not necessarily to high temperature TOC
Wet-chemical analysis device and method.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of TOC wet-chemical analysis device, including multi-pass inline valve, peristaltic pump, UV digestion device, blow-off tube, NDIR detector and
Air pump.The bottom of the blow-off tube is connect with air pump and peristaltic pump respectively, and air pump and blow-off tube bottom junctions are absorbed equipped with CO2
Device, the multi-pass inline valve are connect with peristaltic pump, and the top of the blow-off tube connects with NDIR detector and UV digestion device respectively
It connects, UV digestion device is connect with multi-pass inline valve.In the middle part of the multi-pass inline valve, blow-off tube and blow-off tube lower part is all connected with emptying
Pipeline.
Further, the multi-pass inline valve be eight logical inline valves, the logical inline valve of described eight include valve Q1, Q2,
Q3,Q4,Q5,Q6,Q7,Q8.Wherein, Q1, Q2 are connect with R1 medicament pipe, R2 medicament pipe respectively, and Q3 is connect with pure water pipe, Q4 with into
Tracheae connection, Q5 are connect with water sample pipe, and Q6 is connect with standard liquid pipe, and Q7 is connect with emptying pipeline, Q8 connection UV digestion device.
Further, the top of blow-off tube and the junction of UV digestion device are equipped with triple valve QA, and triple valve QA includes normally opened
End, normal-closed end and common end, the top of blow-off tube and the common end of QA connect, and the normal-closed end of QA connects UV digestion device.
Further, the top of blow-off tube and the junction of NDIR detector are equipped with triple valve QB and QC, copper wire filter
And filter membrane, triple valve QB and QC respectively include normally open end, normal-closed end and common end.The top of blow-off tube and the normally open end of QC connect
It connects, the common end of QC and the common end of QB connect, and the normal-closed end of QC and the middle part of blow-off tube connect, the normally open end of QB and copper wire mistake
Filter connection, the normally open end connection emptying pipeline of QB.
Wherein, the aperture of the filter membrane is 0.3-0.6um.
It further, further include T-type threeway, three valve ports of T-type threeway bottom with peristaltic pump, blow-off tube respectively
And CO2 absorber connection.
Wherein, the junction of the CO2 absorber and T-type threeway is equipped with pressure valve and flowmeter.
Further, the junction of the peristaltic pump and multi-pass inline valve is equipped with water sample detection device.
The invention also discloses a kind of TOC wet-chemical analysis methods, using above-mentioned TOC wet-chemical analysis device, including such as
Lower step:
Step 1: carrying out blow-off tube and the emptying of UV digestion device.
Step 2: water sample is pumped into blow-off tube, emptying of the extra water sample in the middle part of blow-off tube by blow-off tube bottom through peristaltic pump
Water sample in the public pipeline of multi-pass inline valve, is all blown into blow-off tube by pipeline discharge using air.
Step 3: medicament R1 is pumped into blow-off tube by blow-off tube bottom through peristaltic pump, and the sulfuric acid that wherein R1 is concentration 8%-12% is molten
Liquid, emptying pipeline discharge of the extra medicament R1 in the middle part of blow-off tube, using air by the medicine in the public pipeline of multi-pass inline valve
Agent R1 is all blown into blow-off tube.
Step 4: air pump is opened, and air is blown into blow-off tube by stripping bottom of the tube after CO2 absorber filters out CO2, to blowing
Sample in de- pipe carries out aeration stripping, and the CO2 that generation will be reacted with R1 is blown to NDIR detectors measure and goes out TIC peak value.
Step 5: peristaltic pump slow-speed, medicament R2 are added into blow-off tube by stripping bottom of the tube, and wherein R2 is concentration 0.4%-
The mixed liquor of 0.6% sulfuric acid and the sodium sulphate of concentration 10%-15%, emptying pipeline row of the extra medicament R2 in the middle part of blow-off tube
Out, the medicament R2 in the public pipeline of multi-pass inline valve is all blown into blow-off tube using air.
Step 6: peristaltic pump inverts, and the sample in blow-off tube aoxidizes resolution constantly in UV digestion device.
Step 7: air pump is opened, and air is entered after CO2 absorber filters out CO2 by stripping bottom of the tube, in blow-off tube
Sample constantly carry out aeration stripping, the CO2 that stripping inner reaction tube generates is blown to NDIR detectors measure and goes out TOC peak value, according to
TOC value is calculated according to the data in instrument.
Step 8: pure water cleaning is carried out after emptying to blow-off tube and UV digestion device.
It is reasonable that the invention has the following beneficial effects: structure of the invention, and analytic process high degree of automation, TOC was analyzed
Quickly, efficiently, analytic process is not necessarily to high temperature, instrument long service life to journey.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Primary clustering symbol description: 1, eight logical inline valve；101, R1 medicament pipe；102, R2 medicament pipe；103, pure water pipe；
104, air inlet pipe；105, water sample pipe；106, standard liquid pipe；2, peristaltic pump；3, UV digestion device；4, blow-off tube；5, NDIR detector；6,
Air pump；7, T-type threeway；8, CO2 absorber；9, water sample detection device；10, pressure valve；11, flowmeter；12, copper wire filter；13,
0.45u filter membrane.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention will be further described.
As shown in Figure 1, a kind of TOC wet-chemical analysis device, including eight logical inline valves 1, peristaltic pump 2, UV digestion device 3, blow
De- pipe 4, NDIR detector 5 and air pump 6.Eight logical inline valves 1 include valve Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8.Wherein, Q1,
Q2 is connect with R1 medicament pipe 101, R2 medicament pipe 102 respectively, and Q3 is connect with pure water pipe 103, and Q4 is connect with air inlet pipe 104, Q5 with
Water sample pipe 105 connects, and Q6 is connect with standard liquid pipe 106, and Q7 is connect with W1 emptying pipeline, Q8 connection UV digestion device 3.
4 bottom of blow-off tube is connected with air pump 6 and peristaltic pump 2 respectively, and the lower section of blow-off tube 4 is equipped with T-type threeway 7, T-type threeway
7 three valve ports are connect with peristaltic pump 2, the bottom of blow-off tube 4 and CO2 absorber 8 respectively, and the other end of peristaltic pump 2 and eight leads to
Inline valve 1 connects, and the junction of peristaltic pump 2 and eight logical inline valves 1 is equipped with water sample detection device 9.CO2 absorber 8 and T-type threeway 7
Junction be equipped with pressure valve 10 and flowmeter 11, CO2 absorber 8 connect with air pump 6.It is examined respectively with NDIR on 4 top of blow-off tube
It surveys device 5 and UV digestion device 3 connects, the junction of blow-off tube 4 and UV digestion device 3 is equipped with triple valve QA, and triple valve QA includes normally opened
(end NO), normal-closed end (end NC) and common end (end COM), the top of blow-off tube 4 and the common end of QA is held to connect, the normal-closed end of QA
Connect UV digestion device 3.
The junction of blow-off tube 4 and NDIR detector 5 is equipped with triple valve QB and QC, copper wire filter 12 and 0.45u filter membrane
13, triple valve QB and QC respectively include normally open end, normal-closed end and common end.The top of blow-off tube 4 and the normally open end of QC connect, QC
Common end and the common end of QB connect, the normal-closed end of QC connect with the middle part of blow-off tube 4, the normally open end of QB and copper wire filter
The normally open end connection W2 of 12 connections, QB empties pipeline.
The invention also discloses a kind of TOC wet-chemical analysis methods, using above-mentioned TOC wet-chemical analysis device, including such as
Lower step:
Step 1: after instrument starting measurement, the emptying of liquid, Q3 movement, peristaltic pump 2 are anti-first in the progress water route TOC blow-off tube 4
Turn, liquid is discharged from 4 lower end of blow-off tube；Q7, QB movement, 4 upper pipeline liquid of blow-off tube are discharged from 4 top of blow-off tube；QA,
QB valve event, peristaltic pump 2 rotate forward, and the liquid in UV digestion device 3 is by force feed to blow-off tube 4, and then Q7 is acted, and peristaltic pump 2 is anti-
Turn, remaining liquid is all discharged from 4 lower end of blow-off tube.
Step 2: carrying out being taken into for sample, Q5, QB, QC valve event, peristaltic pump 2 rotate forward, and water sample is from 105 end quilt of water sample pipe
It is taken into, enters later from 4 bottom of blow-off tube, due to the quantitative effect of pipe valve, extra sample can be through QC, later from QB's
Normal-closed end flows into W2 and empties pipeline；Q4, QB, QC valve event, it is using air that the sample of the eight public pipelines of logical inline valve 1 is whole
It is blown into blow-off tube 4, plays the role of mixing sample.
Step 3:Q1, QB, QC valve event, 2 slow-speed of peristaltic pump, R1(10% sulfuric acid solution) it is quantitatively adding to blow-off tube 4
Interior, extra liquid is discharged into W2 emptying pipeline from the normal-closed end of QB.Q5, QB valve event after the completion of dosing, using air by eight
The medicament of the logical public pipeline of inline valve 1 is all blown into blow-off tube 4, and sample and medicament is made to obtain being sufficiently mixed reaction.
Step 4: air pump 6 open, air from after CO2 absorber 8 filters out CO2 through T-type threeway 7, from 4 bottom of blow-off tube
Into constantly carrying out aeration stripping to sample in pipe, the CO2 generated will be reacted with medicament R1 and is blown to NDIR detector 5 and measures
TIC peak value.
Step 5:Q2 valve event, 2 slow-speed of peristaltic pump, R2(0.5% sulfuric acid and 12% sodium peroxydisulfate) it is added into blow-off tube 4
It is interior.The medicament of the eight public pipelines of logical inline valve 1 is all blown into blow-off tube 4 by Q5 valve event after the completion of dosing using air,
Sample and medicament is set to obtain being sufficiently mixed reaction.
Step 6:QA valve and Q8 movement, peristaltic pump 2 invert, and sample aoxidizes resolution constantly in UV digestion device 3 in pipeline,
The liquid of the inside is able to be sufficiently mixed reaction.
Step 7: air pump 6 open, air from after CO2 absorber 8 filters out CO2 through T-type threeway 7, from 4 bottom of blow-off tube
Into constantly carrying out aeration stripping to sample in pipe, total organic carbon reacted with medicament R2 to the CO2 generated and is blown to NDIR detector
5 measure TOC peak value.TOC value is calculated according to the data in instrument, in terms of mg/L.
Step 8: pure water cleaning is carried out after emptying to blow-off tube 4 and UV digestion device 3.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, in the form and details to this hair
It is bright to make a variety of changes, it is protection scope of the present invention.
Claims (9)
1. a kind of TOC wet-chemical analysis device, it is characterised in that: including multi-pass inline valve, peristaltic pump, UV digestion device, blow-off tube,
The bottom of NDIR detector and air pump, the blow-off tube is connect with air pump and peristaltic pump respectively, and air pump is connect with stripping bottom of the tube
Place is equipped with CO2 absorber, and the multi-pass inline valve connect with peristaltic pump, the top of the blow-off tube respectively with NDIR detector
And the connection of UV digestion device, UV digestion device are connect with multi-pass inline valve, the multi-pass inline valve, the middle part of blow-off tube and lower part are all
It is connected with emptying pipeline.
2. a kind of TOC wet-chemical analysis device as described in claim 1, it is characterised in that: the multi-pass inline valve is eight
Logical inline valve, the logical inline valve of described eight includes valve Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, wherein Q1, Q2 respectively with R1 medicine
Agent pipe, the connection of R2 medicament pipe, Q3 are connect with pure water pipe, and Q4 is connect with air inlet pipe, and Q5 is connect with water sample pipe, Q6 and standard liquid Guan Lian
It connects, Q7 is connect with emptying pipeline, Q8 connection UV digestion device.
3. a kind of TOC wet-chemical analysis device as described in claim 1, it is characterised in that: the top of blow-off tube and UV clear up
The junction of device is equipped with triple valve QA, and triple valve QA includes normally open end, normal-closed end and common end, the top of blow-off tube and the public affairs of QA
The normal-closed end of end connection altogether, QA connects UV digestion device.
4. a kind of TOC wet-chemical analysis device as described in claim 1, it is characterised in that: the top of blow-off tube and NDIR are examined
The junction for surveying device is equipped with triple valve QB and QC, copper wire filter and filter membrane, and triple valve QB and QC respectively include normally open end, normally closed
End and common end, the top of blow-off tube and the normally open end of QC connect, and the common end of QC and the common end of QB connect, the normal-closed end of QC
It is connect with the middle part of blow-off tube, the normally open end of QB is connect with copper wire filter, the normally open end connection emptying pipeline of QB.
5. a kind of TOC wet-chemical analysis device as claimed in claim 4, it is characterised in that: the aperture of the filter membrane is 0.3-
0.6um。
6. a kind of TOC wet-chemical analysis device as described in claim 1, it is characterised in that: further include T-type threeway, the T-type
Three valve ports of threeway are connect with peristaltic pump, the bottom of blow-off tube and CO2 absorber respectively.
7. a kind of TOC wet-chemical analysis device as claimed in claim 6, it is characterised in that: the CO2 absorber and T-type
The junction of threeway is equipped with pressure valve and flowmeter.
8. a kind of TOC wet-chemical analysis device as described in claim 1, it is characterised in that: the peristaltic pump and multi-pass are in line
The junction of valve is equipped with water sample detection device.
9. a kind of TOC wet-chemical analysis method, using TOC wet-chemical analysis device of any of claims 1-8,
It is characterized in that, includes the following steps:
Step 1: carrying out blow-off tube and the emptying of UV digestion device；
Step 2: water sample is pumped into blow-off tube, emptying pipeline of the extra water sample in the middle part of blow-off tube by blow-off tube bottom through peristaltic pump
Water sample in the public pipeline of multi-pass inline valve, is all blown into blow-off tube by discharge using air；
Step 3: medicament R1 is pumped into blow-off tube by blow-off tube bottom through peristaltic pump, and wherein R1 is the sulfuric acid solution of concentration 8%-12%,
Emptying pipeline discharge of the extra medicament R1 in the middle part of blow-off tube, using air by the medicament R1 in the public pipeline of multi-pass inline valve
All it is blown into blow-off tube；
Step 4: air pump is opened, and air is blown into blow-off tube by stripping bottom of the tube after CO2 absorber filters out CO2, to blow-off tube
Interior sample carries out aeration stripping, and the CO2 that generation will be reacted with R1 is blown to NDIR detectors measure and goes out TIC peak value；
Step 5: peristaltic pump slow-speed, medicament R2 are added into blow-off tube by stripping bottom of the tube, and wherein R2 is concentration 0.4%-0.6%
Sulfuric acid and concentration 10%-15% sodium sulphate mixed liquor, extra medicament R2 in the middle part of blow-off tube emptying pipeline discharge, benefit
The medicament R2 in the public pipeline of multi-pass inline valve is all blown into blow-off tube with air；
Step 6: peristaltic pump inverts, and the sample in blow-off tube aoxidizes resolution constantly in UV digestion device；
Step 7: air pump is opened, and air is entered after CO2 absorber filters out CO2 by stripping bottom of the tube, to the sample in blow-off tube
Product constantly carry out aeration stripping, and the CO2 that stripping inner reaction tube generates is blown to NDIR detectors measure and goes out TOC peak value, according to instrument
Data in table calculate TOC value；
Step 8: pure water cleaning is carried out after emptying to blow-off tube and UV digestion device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443193.2A CN109342349B (en) | 2018-11-29 | 2018-11-29 | TOC wet chemical analysis device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443193.2A CN109342349B (en) | 2018-11-29 | 2018-11-29 | TOC wet chemical analysis device and method |
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| Publication Number | Publication Date |
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| CN109342349A true CN109342349A (en) | 2019-02-15 |
| CN109342349B CN109342349B (en) | 2020-05-08 |
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| CN201811443193.2A Active CN109342349B (en) | 2018-11-29 | 2018-11-29 | TOC wet chemical analysis device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896761A (en) * | 2019-05-05 | 2020-11-06 | 天津大学 | A single chip microcomputer control device for mercury ion detecting system |
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| CN101178392A (en) * | 2007-10-26 | 2008-05-14 | 山西大学 | Organic matter in water enriching concentrating instrument and control method thereof |
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| CN202421060U (en) * | 2011-11-25 | 2012-09-05 | 北京瑞升特科技有限公司 | Cyanide measuring system |
| CN107367475A (en) * | 2017-07-20 | 2017-11-21 | 福建省吉龙德环保科技有限公司 | Water sample total cyanogen analytical equipment and analysis method |
-
2018
- 2018-11-29 CN CN201811443193.2A patent/CN109342349B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101178392A (en) * | 2007-10-26 | 2008-05-14 | 山西大学 | Organic matter in water enriching concentrating instrument and control method thereof |
| CN201392315Y (en) * | 2008-12-26 | 2010-01-27 | 马三剑 | Automatic on-line monitoring device for ammonia nitrogen |
| CN202421060U (en) * | 2011-11-25 | 2012-09-05 | 北京瑞升特科技有限公司 | Cyanide measuring system |
| CN107367475A (en) * | 2017-07-20 | 2017-11-21 | 福建省吉龙德环保科技有限公司 | Water sample total cyanogen analytical equipment and analysis method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896761A (en) * | 2019-05-05 | 2020-11-06 | 天津大学 | A single chip microcomputer control device for mercury ion detecting system |
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| CN109342349B (en) | 2020-05-08 |
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