CN101806789B - Analyzer for analyzing concentration of inorganic carbon in water body - Google Patents
Analyzer for analyzing concentration of inorganic carbon in water body Download PDFInfo
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- CN101806789B CN101806789B CN2010101264460A CN201010126446A CN101806789B CN 101806789 B CN101806789 B CN 101806789B CN 2010101264460 A CN2010101264460 A CN 2010101264460A CN 201010126446 A CN201010126446 A CN 201010126446A CN 101806789 B CN101806789 B CN 101806789B
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- analyzer
- water body
- reactor
- inorganic carbon
- cylindrical shell
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Abstract
The invention relates to an analyzer for analyzing the concentration of inorganic carbon in a water body. The analyzer comprises a CO2 analyzer, wherein the top gas outlet of a reactor is connected with a drying pipe, a micro gas pump and a flow meter in turn and is communicated with the gas inlet of the CO2 analyzer; and the gas outlet of the CO2 analyzer is communicated with the middle gas inlet of the reactor. The analyzer has the advantages of high adaptability and correct and rapid test analysis.
Description
Technical field
The present invention relates to a kind of water quality monitoring and use analyser, analyzer for analyzing concentration of inorganic carbon in particularly a kind of water body.
Background technology
Dissolved inorganic carbon in the water body (DIC) concentration is the important parameter in the water quality monitoring.In Study of Water Environment, DIC concentration is a conventional analysis project.This parameter usually is used for evaluating water quality situation, basin weathering intensity etc., also is the underlying parameter of research global carbon.Accurately, this parameter of fast measuring thereby significant.At present, the most frequently used analytical approach of this parameter is a hydrochloric titration.This method has higher degree of accuracy and accuracy, is internationally recognized analytical approach.But this analytical approach also has shortcoming and limitation.At first, this method is had relatively high expectations to analyst's analytical skill.The main factor that produces error also comprises: (1) needs are accurately demarcated titration and are used hydrochloric acid; (2) judgement to titration end-point water sample color transition point needs good analysis experience; (3) when having other alkaloids (like organic base, borate etc.) in the water sample, this method can't obtain real DIC concentration.Therefore, it is very necessary seeking the stronger analytical approach of DIC accurately and rapidly of a kind of applicability.
Summary of the invention
The objective of the invention is to the defective to the prior art existence, analyzer for analyzing concentration of inorganic carbon in a kind of water body is provided, practical, test analysis accurately, fast.
For achieving the above object, the present invention adopts following technical proposals:
Analyzer for analyzing concentration of inorganic carbon in a kind of water body has comprised a CO
2Analyser, it is characterized in that having a reactor head gas outlet to connect a drying tube, micro air pump and flowmeter successively after, connect said CO
2The air intake opening of analyser, this CO
2Said reactor middle part air intake opening is connected in the gas outlet of analyser.
The structure of said reactor is: a sealable cover of cylindrical shell coupling of upwards opening, and cover is provided with said gas outlet, also plant on the cover phosphoric acid syringe and an indicator injector, the cylindrical shell middle part is provided with said gas outlet; Be provided with a magnetic stirring apparatus below stirring rotator of placement in the cylindrical shell, cylindrical shell.
Three rubber seal mouths are arranged on the said cover, wherein two be used to plant described phosphoric acid syringe and indicator injectors, all the other one is subsequent use mouthful.
A throttling valve is housed on the described drying tube export pipeline, between this throttling valve and micro air pump, has a curved siphunculus road to be connected the calibrating gas interface, on this curved siphunculus road a throttling valve is housed also.
The present invention has following conspicuous outstanding substantive distinguishing features and remarkable advantage compared with prior art:
Analyser of the present invention adopts reactor, drying tube, micro air pump, flowmeter and CO
2Analyser is formed closed circuit, in reactor, sucks water to be measured earlier, adds phosphoric acid and indicator, behind the stirring reaction, opens micro air pump, through CO
2Analyser is measured concentration, calculates analyzing concentration of inorganic carbon in the water sample, and this analysis appearance applicability is strong, and test analysis accurately, fast.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of reactor among Fig. 1.
Fig. 3 is that gas concentration lwevel changes and the response time graph of relation in the reactor.
Embodiment
The preferred embodiments of the present invention accompanying drawings is following:
Embodiment one: referring to Fig. 1 and Fig. 2, analyzer for analyzing concentration of inorganic carbon comprises a CO in this water sample
28, have gas outlet, reactor 1 top 11 to connect a drying tube 2, micro air pump 6 and flowmeter 7 successively after, connect said CO
2The air intake opening of analyser 8, this CO
2Said reactor 1 middle part air intake opening 15 is connected in the gas outlet of analyser 8.
Embodiment two: present embodiment and embodiment one are basic identical; Special feature is following: referring to Fig. 2; The structure of said reactor 1 is: sealable cover 10 of cylindrical shell 9 couplings of a upward opening; Cover 10 is provided with said gas outlet 11, also plant on the cover 10 a phosphoric acid syringe 12 and an indicator injector 13, and cylindrical shell 9 middle parts are provided with said gas outlet 15; Be provided with a magnetic stirring apparatus 17 below stirring rotator 16 of placement in the cylindrical shell 9, cylindrical shell 9.
Three rubber seal mouths 14 are arranged on the said cover 10, wherein two be used to plant described phosphoric acid syringe 12 and indicator injectors 13, all the other one be subsequent use mouth.
Referring to Fig. 1, on said drying tube 2 export pipelines throttling valve 3 is housed, there is a curved siphunculus road to be connected calibrating gas interface 46 of this throttling valve 3 and micro air pumps, on this curved siphunculus road a throttling valve 5 is housed also.
Concrete test operation method is following: referring to Fig. 1 and Fig. 2, produce carbon dioxide in the reactor (1) and sucked drying tube 2, passed through flowmeter 7 by micro air pump 6, get into CO at last
2Infrared spectrum analyser (8) (this method is selected the CA-10A analyser for use) is measured.Gas after the mensuration is sent into reactor 1, constitutes gas return path.Calibrating gas interface 4 is used for before analysis, instrument being demarcated.Experiment flow in the reactor 1: accurately draw 50 milliliters of water samples and go into reactor 1, cover 10 is airtight.Open micro air pump 6, CO
2Analyser (8) carries out CO
2The background determination of concentration.After accomplishing background determination, open magnetic agitation, inject excessive pure phosphoric acid and indicator through syringe 12,13 simultaneously.Reaction is used CO after accomplishing
2DIC concentration in the difference of final concentration and background concentration, volume of water sample and reactor 1 and the pipeline portions volume conversion water sample.
Experiment parameter is following:
Reactor and pipeline volume: 1350 milliliters
Gas flow: 500 ml/min
Background determination time: 1-2 minute
Reaction time: 3-4 minute
This method is checked with the standard sodium carbonate liquor.Result such as table 1.Ten analysis results to each concentration sodium carbonate standard solution show; This method has good stable property and precision.
The analysis result of table 1. pair variable concentrations standard sodium carbonate liquor
Fig. 3 illustrates gas concentration lwevel variation (1.0mmol/L and 4.0mmol/L sodium carbonate liquor) and response time relation curve in the reactor (1).
Claims (4)
1. analyzer for analyzing concentration of inorganic carbon in the water body has comprised a CO
2Analyser (8), it is characterized in that having a reactor (1) gas outlet, top (11) to connect a drying tube (2), a micro air pump (6) and a flowmeter (7) successively after, connect said CO
2The air intake opening of analyser (8), this CO
2Said reactor (1) middle part air intake opening (15) is connected in the gas outlet of analyser (8).
2. analyzer for analyzing concentration of inorganic carbon in the water body according to claim 1; The structure that it is characterized in that described reactor (1) is: a cylindrical shell of upwards opening (a 9) coupling sealable cover (10); Cover (10) is provided with said gas outlet (11); Also plant on the cover (10) a phosphoric acid syringe (12) and an indicator injector (13), cylindrical shell (9) middle part is provided with said air intake opening (15); Be provided with a magnetic stirring apparatus (17) below the placement stirring rotator (16) in the cylindrical shell (9), cylindrical shell (9).
3. analyzer for analyzing concentration of inorganic carbon in the water body according to claim 2; It is characterized in that three rubber seal mouths (14) are arranged on the said cover (10); Wherein two be used to plant described phosphoric acid syringe (12) and indicator injectors (13), all the other one is subsequent use mouthful.
4. analyzer for analyzing concentration of inorganic carbon in the water body according to claim 1; It is characterized in that on said drying tube (2) export pipeline throttling valve (3) being housed; Between this throttling valve (3) and micro air pump (6), there is a curved siphunculus road to be connected calibrating gas interface (4), on this curved siphunculus road a throttling valve (5) is housed also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101264460A CN101806789B (en) | 2010-03-17 | 2010-03-17 | Analyzer for analyzing concentration of inorganic carbon in water body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101264460A CN101806789B (en) | 2010-03-17 | 2010-03-17 | Analyzer for analyzing concentration of inorganic carbon in water body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101806789A CN101806789A (en) | 2010-08-18 |
| CN101806789B true CN101806789B (en) | 2012-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101264460A Expired - Fee Related CN101806789B (en) | 2010-03-17 | 2010-03-17 | Analyzer for analyzing concentration of inorganic carbon in water body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101806789B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879590A (en) * | 2012-10-15 | 2013-01-16 | 国家海洋局第二海洋研究所 | Automatic acidification reaction device for seawater sample |
| CN103913553A (en) * | 2014-03-31 | 2014-07-09 | 中国科学院海洋研究所 | Sailing measurement device for seawater dissolved inorganic carbon (DIC) |
| CN109613192B (en) * | 2018-11-28 | 2022-06-10 | 成都利尔环保技术开发有限公司 | Waste water biotoxicity monitoring equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60142257A (en) * | 1983-12-28 | 1985-07-27 | Shimadzu Corp | Method and device for determination of inorganic carbon |
| CN1888895B (en) * | 2005-06-27 | 2011-03-30 | 天津师范大学 | Method and instrument for determining PH value and inorganic carbon form through measuring density of CO2 |
-
2010
- 2010-03-17 CN CN2010101264460A patent/CN101806789B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101806789A (en) | 2010-08-18 |
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