CN110118744A - A kind of method of total content of organic carbon in detection water - Google Patents
A kind of method of total content of organic carbon in detection water Download PDFInfo
- Publication number
- CN110118744A CN110118744A CN201910548003.1A CN201910548003A CN110118744A CN 110118744 A CN110118744 A CN 110118744A CN 201910548003 A CN201910548003 A CN 201910548003A CN 110118744 A CN110118744 A CN 110118744A
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- Prior art keywords
- carbon
- solution
- organic
- concentration
- water
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 89
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 title claims abstract description 11
- 239000000243 solution Substances 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 238000010521 absorption reaction Methods 0.000 claims abstract description 11
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 7
- 239000012086 standard solution Substances 0.000 claims abstract description 4
- 239000012153 distilled water Substances 0.000 claims description 19
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 14
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 7
- 239000001569 carbon dioxide Substances 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- IWZKICVEHNUQTL-UHFFFAOYSA-M potassium hydrogen phthalate Chemical class [K+].OC(=O)C1=CC=CC=C1C([O-])=O IWZKICVEHNUQTL-UHFFFAOYSA-M 0.000 claims description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 6
- 239000011550 stock solution Substances 0.000 claims description 6
- 238000011088 calibration curve Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000004090 dissolution Methods 0.000 description 4
- 239000002957 persistent organic pollutant Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 229910052806 inorganic carbonate Inorganic materials 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 231100000570 acute poisoning Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 231100000739 chronic poisoning Toxicity 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000002703 mutagenesis Methods 0.000 description 1
- 231100000350 mutagenesis Toxicity 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003403 water pollutant Substances 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
- G01N21/17—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
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
Abstract
The present invention relates to a kind of methods of total content of organic carbon in detection water, include the following steps: that reagent prepares, organic carbon Standard Reserving Solution is prepared, inorganic carbon Standard Reserving Solution is prepared, standard solution is prepared, Specification Curve of Increasing, quantitative water sample is taken to inject TOC monitor high-temperature combustion tube and low-temp reaction pipe, it is measured and obtains the peak height of high-temperature combustion tube and the corresponding absorption peak of low-temp reaction pipe, total carbon concentration and concentrations of inorganic carbon in the water sample are calculated according to standard curve, and total carbon concentration is subtracted into concentrations of inorganic carbon up to organic concentration of carbon of the water sample.The present invention monitors the organic carbon content in water using non-dispersive infrared absorption method by TOC monitor, only need to disposably convert, and process is simple, favorable reproducibility, high sensitivity.
Description
Technical field
The present invention relates to water quality monitoring technical fields, and in particular to a method of total content of organic carbon in detection water.
Background technique
TOC (total organic carbon) is the total amount that Organic substance in water is indicated with the content of carbon, is the important of monitoring organic pollutant
Mode, carbon are the common components of all organic matters, form the essential element of organic matter, and the TOC value of water is higher, illustrates organic in water
Pollutant load is higher, the PM2.5 in water so TOC is otherwise known as.
There are many organic pollutant category, can be divided into Natural Organic Pollutants and artificial synthesized organic pollutant by its source.
As artificial synthesized organic matter is more and more, artificial synthesized organism kinds reach in known more than 700 ten thousand kinds of organic matters
100000 kinds or more, and with annual 2000 kinds of speed increase.Wherein there is organic dirt of " three cause " (carcinogenic, teratogenesis, mutagenesis)
It is more and more to contaminate object such as petroleum hydrocarbon, Polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbon (PAHs), chlorinated solvents, explosive, pesticide etc., it
Migrate or escape into air in the soil, in water body by volatilization, leaching and by diffusion etc. that concentration gradient generates, cause Jie's water
Infectious disease, biogeo-chemical diseases, chemical contamination cause acute and chronic poisoning etc. to break out, to atmosphere, water body, ecology
The life of system and the mankind cause high risks, so the monitoring of TOC is critically important in drinking water.
Summary of the invention
It is total organic in water to monitor the purpose of the present invention is to provide a kind of method of total content of organic carbon in detection water
The content of carbon.
The present invention provides a kind of methods of total content of organic carbon in detection water, include the following steps:
(1) reagent prepares: preparing enough Potassium Hydrogen Phthalates, natrium carbonicum calcinatum, sodium bicarbonate benchmark reagent and steaming
Distilled water；
(2) Standard Reserving Solution is prepared；
A, organic carbon Standard Reserving Solution is prepared: weighing quantitative Potassium Hydrogen Phthalate, quantitative distilled water stirring is added
Dissolution, obtains organic carbon Standard Reserving Solution, and the concentration of carbon is 400mg/L in the organic carbon stock solution；
B, inorganic carbon Standard Reserving Solution is prepared, and is weighed quantitative natrium carbonicum calcinatum and sodium bicarbonate according to a certain percentage, is added
Enter quantitative distilled water dissolution, obtain inorganic carbon Standard Reserving Solution, the concentration of carbon is 400mg/ in the inorganic carbon Standard Reserving Solution
L；
(3) standard solution is prepared
It measures the mark stock solution of organic carbon obtained by quantitative step (2) and inorganic carbon Standard Reserving Solution is separately added into distilled water
The organic carbon standard serial solution and inorganic carbon standard serial solution of various concentration are prepared in dilution respectively；
(4) Specification Curve of Increasing
The organic carbon standard serial solution of various concentration obtained by step (3) and inorganic carbon standard serial solution are injected separately into
The high-temperature combustion tube and low-temp reaction pipe of TOC monitor start to measure, and by absorption peak height and the corresponding concentration on monitor
Calibration curve corresponding to high-temperature combustion tube and low-temp reaction pipe is drawn in mapping；
(5) water determination
It takes quantitative water sample to inject TOC monitor high-temperature combustion tube and low-temp reaction pipe, be measured and show that high temperature fires
The peak height for managing absorption peak corresponding with low-temp reaction pipe is burnt, the total carbon concentration and inorganic carbon in the water sample are calculated according to standard curve
Total carbon concentration is subtracted concentrations of inorganic carbon up to organic concentration of carbon of the water sample by concentration.
Further, the distilled water is no carbon dioxide distilled water.
Further, the temperature of the high-temperature combustion tube is 900 DEG C.
Further, the temperature of the low-temp reaction pipe is 150 DEG C.
Beneficial effect using aforementioned present invention technical solution is:
The present invention monitors the organic carbon content in water using non-dispersive infrared absorption method by TOC monitor,
It only need to disposably convert, process is simple, favorable reproducibility, high sensitivity.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.
The present invention provides a kind of methods of total content of organic carbon in detection water, include the following steps:
(1) reagent prepares: preparing enough Potassium Hydrogen Phthalates, natrium carbonicum calcinatum, sodium bicarbonate benchmark reagent and steaming
Distilled water；
(2) Standard Reserving Solution is prepared；
A, organic carbon Standard Reserving Solution is prepared: weighing quantitative Potassium Hydrogen Phthalate, quantitative distilled water stirring is added
Dissolution, obtains organic carbon Standard Reserving Solution, and the concentration of carbon is 400mg/L in the organic carbon stock solution；
B, inorganic carbon Standard Reserving Solution is prepared, and is weighed quantitative natrium carbonicum calcinatum and sodium bicarbonate according to a certain percentage, is added
Enter quantitative distilled water dissolution, obtain inorganic carbon Standard Reserving Solution, the concentration of carbon is 400mg/ in the inorganic carbon Standard Reserving Solution
L；
(3) standard solution is prepared
It measures the mark stock solution of organic carbon obtained by quantitative step (2) and inorganic carbon Standard Reserving Solution is separately added into distilled water
The organic carbon standard serial solution and inorganic carbon standard serial solution of various concentration are prepared in dilution respectively；
(4) Specification Curve of Increasing
The organic carbon standard serial solution of various concentration obtained by step (3) and inorganic carbon standard serial solution are injected separately into
The high-temperature combustion tube and low-temp reaction pipe of TOC monitor start to measure, and by absorption peak height and the corresponding concentration on monitor
Calibration curve corresponding to high-temperature combustion tube and low-temp reaction pipe is drawn in mapping；
(5) water determination
It takes quantitative water sample to inject TOC monitor high-temperature combustion tube and low-temp reaction pipe, be measured and show that high temperature fires
The peak height for managing absorption peak corresponding with low-temp reaction pipe is burnt, the total carbon concentration and inorganic carbon in the water sample are calculated according to standard curve
Total carbon concentration is subtracted concentrations of inorganic carbon up to organic concentration of carbon of the water sample by concentration.
Testing principle of the invention are as follows: water sample is respectively by injection high-temperature combustion tube (900 DEG C) and low-temp reaction pipe (150 DEG C)
In, the water sample through high-temperature combustion tube is transformed into organic compound and inorganic carbonate in water sample by high-temperature S removal
For carbon dioxide；Water sample through low-temp reaction pipe is acidified and inorganic carbonate is made to be decomposed into carbon dioxide.High-temperature combustion tube
Non-dispersion infrared detector is successively imported with low-temperature oxidation tank carbon dioxide generated, to measure the total carbon in water respectively
(TC) and the absorption peak-to-peak value of inorganic carbon (IC), then compared with calibration curve, obtain the concentration of total carbon and inorganic carbon, total carbon with
The difference of inorganic carbon, as total organic carbon (TOC)
Wherein, the distilled water is no carbon dioxide distilled water, is avoided in distilled water containing carbon dioxide to testing result
It has an impact.
To sum up, the present invention monitors the organic carbon in water by TOC monitor using non-dispersive infrared absorption method
Content only need to be converted disposably, and process is simple, favorable reproducibility, high sensitivity.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (4)
1. a kind of method of total content of organic carbon in detection water, which comprises the steps of:
(1) reagent prepares: preparing enough Potassium Hydrogen Phthalates, natrium carbonicum calcinatum, sodium bicarbonate benchmark reagent and distilled water；
(2) Standard Reserving Solution is prepared；
A, organic carbon Standard Reserving Solution is prepared: quantitative Potassium Hydrogen Phthalate is weighed, quantitative distilled water stirring and dissolving is added,
Organic carbon Standard Reserving Solution is obtained, the concentration of carbon is 400mg/L in the organic carbon stock solution；
B, inorganic carbon Standard Reserving Solution is prepared, and weighs quantitative natrium carbonicum calcinatum and sodium bicarbonate according to a certain percentage, and it is fixed to be added
The distilled water of amount dissolves, and obtains inorganic carbon Standard Reserving Solution, and the concentration of carbon is 400mg/L in the inorganic carbon Standard Reserving Solution；
(3) standard solution is prepared
Measure the mark stock solution of organic carbon obtained by quantitative step (2) and inorganic carbon Standard Reserving Solution to be separately added into distilled water dilute
It releases, prepares the organic carbon standard serial solution and inorganic carbon standard serial solution of various concentration respectively；
(4) Specification Curve of Increasing
The organic carbon standard serial solution of various concentration obtained by step (3) and inorganic carbon standard serial solution are injected separately into TOC
The high-temperature combustion tube and low-temp reaction pipe of monitor start to measure, and the absorption peak height on monitor is made with corresponding concentration
Figure draws calibration curve corresponding to high-temperature combustion tube and low-temp reaction pipe；
(5) water determination
It takes quantitative water sample to inject TOC monitor high-temperature combustion tube and low-temp reaction pipe, is measured and obtains high-temperature combustion tube
The peak height of absorption peak corresponding with low-temp reaction pipe calculates that total carbon concentration in the water sample and inorganic carbon are dense according to standard curve
Degree, subtracts concentrations of inorganic carbon for total carbon concentration up to organic concentration of carbon of the water sample.
2. the method for total content of organic carbon in detection water according to claim 1, which is characterized in that the distilled water is nothing
Carbon dioxide distilled water.
3. the method for total content of organic carbon in detection water according to claim 1, which is characterized in that the high-temperature combustion tube
Temperature be 900 DEG C.
4. the method for total content of organic carbon in detection water according to claim 1, which is characterized in that the low-temp reaction pipe
Temperature be 150 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910548003.1A CN110118744A (en) | 2019-06-24 | 2019-06-24 | A kind of method of total content of organic carbon in detection water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910548003.1A CN110118744A (en) | 2019-06-24 | 2019-06-24 | A kind of method of total content of organic carbon in detection water |
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| CN201910548003.1A Pending CN110118744A (en) | 2019-06-24 | 2019-06-24 | A kind of method of total content of organic carbon in detection water |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272946A (en) * | 2020-03-30 | 2020-06-12 | 合肥工业大学 | Device and method for measuring content of organic carbon in industrial waste salt |
| CN111912933A (en) * | 2019-12-09 | 2020-11-10 | 南开大学 | Method and system for measuring total organic carbon in water |
| CN111912932A (en) * | 2019-12-09 | 2020-11-10 | 南开大学 | Method and system for measuring chemical oxygen demand in water |
| CN112305149A (en) * | 2020-07-29 | 2021-02-02 | 中国科学院东北地理与农业生态研究所 | Method for estimating water solubility inorganic carbon concentration |
| CN113984697A (en) * | 2021-10-15 | 2022-01-28 | 泰安市科瑞光学仪器有限公司 | Infrared TOC analyzer and using method thereof |
| CN114509528A (en) * | 2021-11-30 | 2022-05-17 | 国能唯真(山东)测试分析有限公司 | Method for detecting carbonate content in desulfurized gypsum |
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| CN103376302A (en) * | 2012-04-19 | 2013-10-30 | 长沙理工大学 | Novel testing method of carbon-containing organic substance |
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2019
- 2019-06-24 CN CN201910548003.1A patent/CN110118744A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376302A (en) * | 2012-04-19 | 2013-10-30 | 长沙理工大学 | Novel testing method of carbon-containing organic substance |
Non-Patent Citations (3)
| Title |
|---|
| XSHXIANPO: "TOC（总有机碳分析仪）测定原理方法", 《百度文库》 * |
| 包兴 等: "基于试验设计的概率体积法在页岩气储量计算中的应用", 《断块油气田》 * |
| 宋祖华 等: "燃烧氧化-非分散红外吸收法测定水中总有机碳（TOC）", 《2007年全国水处理、节水节能及环保精细化学品学术交流会论文集》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912933A (en) * | 2019-12-09 | 2020-11-10 | 南开大学 | Method and system for measuring total organic carbon in water |
| CN111912932A (en) * | 2019-12-09 | 2020-11-10 | 南开大学 | Method and system for measuring chemical oxygen demand in water |
| CN111912933B (en) * | 2019-12-09 | 2022-05-03 | 南开大学 | Method and system for measuring total organic carbon in water |
| CN111912932B (en) * | 2019-12-09 | 2022-05-17 | 南开大学 | Method and system for measuring chemical oxygen demand in water |
| CN111272946A (en) * | 2020-03-30 | 2020-06-12 | 合肥工业大学 | Device and method for measuring content of organic carbon in industrial waste salt |
| CN112305149A (en) * | 2020-07-29 | 2021-02-02 | 中国科学院东北地理与农业生态研究所 | Method for estimating water solubility inorganic carbon concentration |
| CN113984697A (en) * | 2021-10-15 | 2022-01-28 | 泰安市科瑞光学仪器有限公司 | Infrared TOC analyzer and using method thereof |
| CN114509528A (en) * | 2021-11-30 | 2022-05-17 | 国能唯真(山东)测试分析有限公司 | Method for detecting carbonate content in desulfurized gypsum |
| CN114509528B (en) * | 2021-11-30 | 2024-04-05 | 国能唯真(山东)测试分析有限公司 | Method for detecting carbonate content in desulfurized gypsum |
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Application publication date: 20190813 |
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