Method for detecting content of total organic matters in water in microgravity environment

A technology for total organic matter and water detection, applied in the direction of material resistance, etc., can solve problems such as stability to be improved, complex process, hidden dangers, etc., and achieve the effect of eliminating the gas-liquid separation process, high sensitivity, and improving safety.

Inactive Publication Date: 2016-04-20
48TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Problems solved by technology

[0005] At present, the detection method of total organic carbon applied on the International Space Station is the electrochemical combustion method combined with the non-dispersive infrared detection method. A high-performance gas-liquid separation device is costly and complicated, and this device is not easy to popularize at home and abroad
In addition, during the process of researchers in thi

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  • Method for detecting content of total organic matters in water in microgravity environment

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[0025] Example 1:

[0026] A method of the present invention for detecting the total organic content in water in a microgravity environment, such as figure 1 As shown, including the following steps:

[0027] (1) Use potassium hydrogen phthalate aqueous solution as the solution to be tested, first use 6mol / L phosphoric acid to acid-treat the solution to be tested to remove the influence of inorganic substances in the solution to be tested, and then divide the solution to be tested into two (Equally divided), respectively set the test sample and the control sample, the test sample is sent to the B pipeline, and the control sample is sent to the A pipeline.

[0028] (2) The test sample in the B pipeline is sent to the BDD electrode oxidation reactor, and the BDD electrode oxidation reaction (organic matter + OH·→CO 2 +H 2 O, the temperature can be preferably between 90°C and 110°C) to oxidize the organic matter in the test sample to CO 2 , The conversion rate is over 98.3%. The contr...

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Abstract

The invention discloses a method for detecting the content of total organic matters in water in a microgravity environment. The method comprises steps as follows: (1), a to-be-detected water solution is subjected to acid treatment and then divided into a detection sample and a contrast sample; (2), the detection sample is sufficiently oxidized through an electrode oxidation reaction, and the contrast sample is not oxidized; (3), the oxidized detection sample and the unoxidized contrast sample are filtered through selective films; (4), the electric conductivity of CO2 in the oxidized detection sample and the electric conductivity of CO2 in the unoxidized contrast sample are measured, and the total carbon content and the inorganic carbon content of the to-be-detected water solution are acquired through calculation; the content of the total organic matters in the to-be-detected water solution is acquired with a minusing method. According to the method, dependence on chemicals is reduced, the safety is high, a gas-liquid separation process is not required, and the method can be effectively applied in the microgravity environment.

Description

technical field [0001] The invention relates to a method for detecting the content of total organic matter in water, in particular to a method for detecting the content of total organic matter in water under a microgravity environment. Background technique [0002] The total organic carbon (TOC) content in water represents the sum of organic matter contained in water, reflecting the degree of water pollution by organic matter, and its detection is a means to comprehensively reflect water quality. At present, the measurement of total organic carbon analysis has been widely used in the monitoring of surface water, drinking water, seawater, industrial water, pharmaceutical water, etc. This method has actually become the main detection method for water quality control in the world. [0003] It is very difficult to directly measure the total organic carbon content in water. At present, the common measurement method is to first oxidize the total organic carbon in water to generat...

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Application Information

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IPC IPC(8): G01N27/04
CPCG01N27/04
Inventor 谢念何峰寻骈臻
Owner 48TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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