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Analyzing method for content of anions in high-concentration alkaline liquid

An analysis method and anion technology, applied in the analysis of materials, measuring devices, material separation, etc., can solve the problems of slow analysis speed, inability to directly analyze high-concentration lye, complicated operation steps, etc., achieve a high degree of automation, and solve manual titration Compared with the shortcomings of conventional ion chromatography analysis, the effect of good analysis reproducibility

Inactive Publication Date: 2018-06-12
HAINAN NUCLEAR POWER CO LTD
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Problems solved by technology

[0002] In the conventional technical scheme, the analysis of the anion content in the high-concentration alkaline solution adopts the artificial titration method, and the alkaline solution is first neutralized to neutral, and then further titrated for analysis, which has the disadvantages of complex operation steps, slow analysis speed, poor reproducibility, etc.
[0003] Ion chromatography is widely used in the analysis of anion content. However, due to the material properties of the guard column and analytical column, it cannot be directly applied to the analysis of anions in high-concentration alkaline solutions.
In order to solve the complex operation steps of manual titration of anion content in high-concentration lye, the analysis speed is slow, the reproducibility is poor and ion chromatography cannot directly analyze the problem of high-concentration lye, therefore, it is urgent to research and invent a method using ion chromatograph An online analysis method for reducing the pH of high-concentration alkaline solutions to realize online and automatic analysis of anions in high-concentration alkaline solutions

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  • Analyzing method for content of anions in high-concentration alkaline liquid

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Embodiment Construction

[0042] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] The analytical method of anion content in a kind of high-concentration lye of the present invention comprises the following steps:

[0044] Step 1. Determine the process system

[0045] Such as figure 1 As shown, the process system includes eluent bottle 1, plunger pump 2, trapping column 3, eluent generator 4, self-regenerating trapping column 5, degassing box 6, six-way valve 7, anion suppressor-8, Injector 9, guard column 10, analysis column 11, anion suppressor 2 12, conductivity detector 13;

[0046] The plunger pump 2 is used to provide power for the injection of the eluent, and is connected to the eluent bottle 1 and the trapping column 3 through a plastic hose, and the trapping column 3 is used to remove impurities in the eluent;

[0047] The eluent generator 4 is connected to the self-regenerating ...

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Abstract

The invention belongs to the technical field of water quality analysis, and relates to ion chromatography for the content of anions in a high-concentration alkaline liquid. An anion inhibitor is addedinto a sample feeding channel to reduce the pH of a sample to be measured online and meets a direct sample feeding requirement of ion chromatography; automatic sampling is realized by combining an automatic sample feeder; the ion chromatography for the content of the anions in the high-concentration alkaline liquid has the advantages of high automation degree, high analytical reproducibility andthe like, effectively overcomes the defects in manual titration and a conventional ion chromatography analysis, and realizes on-line automatic analysis of the content of the anions in the high-concentration alkaline liquid.

Description

technical field [0001] The invention belongs to the technical field of water quality analysis, and relates to an ion chromatographic determination technique for anion content in high-concentration lye. Background technique [0002] In the conventional technical scheme, the analysis of the anion content in the high-concentration alkaline solution adopts the artificial titration method, and the alkaline solution is first neutralized to neutral, and then further titrated for analysis, which has the disadvantages of complex operation steps, slow analysis speed, poor reproducibility, etc. . [0003] Ion chromatography is widely used in the analysis of anion content. However, due to the material properties of the guard column and analytical column, it cannot be directly applied to the analysis of anions in high-concentration alkaline solutions. In order to solve the complex operation steps of manual titration of anion content in high-concentration lye, the analysis speed is slow,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/96G01N30/24
CPCG01N30/96G01N30/24G01N2030/965
Inventor 林清湖徐天凤张祥
Owner HAINAN NUCLEAR POWER CO LTD
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