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Trace metal ion detection device and application method based on multi-auxiliary electrode stripping voltammetry

A technology of stripping voltammetry and auxiliary electrodes, which is applied in the field of environmental monitoring or chemical analysis, can solve the problems of auxiliary electrodes being polluted, and achieve the effects of ensuring detection reproducibility, easy operation, and improving pollution

Active Publication Date: 2017-01-11
FUZHOU UNIV
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  • Claims
  • Application Information

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Problems solved by technology

This can effectively solve the problem of the auxiliary electrode being polluted, improve the reproducibility, stability and reliability of the continuous measurement, and facilitate the continuous measurement of the automated system

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  • Trace metal ion detection device and application method based on multi-auxiliary electrode stripping voltammetry

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Such as Figure 1~2 As shown, a trace metal ion detection device based on multi-auxiliary electrode stripping voltammetry includes a computer workstation 12, an electrochemical analyzer 1, a four-electrode system, a transfer switch, an electrochemical detection cell 2, and a magnetic stirrer. The electrochemical analyzer 1 described above is connected to a computer workstation 12, the four-electrode system is connected to the three-electrode terminal of the electrochemical analyzer 1 through a switch, the magnetic stirrer is located below the electrochemical detection cell 2, and the Stir the solution in the electrochemical detection cell 2.

[0030] In this embodiment, the four-electrode system includes a working electrode 6 , an auxiliary electrode 5 , an additional auxiliary electrode 4 and a reference electrode 3 , and the four-elec...

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Abstract

The invention relates to a trace metal ion detection device based on a multi-auxiliary-electrode stripping voltammetry; the trace metal ion detection device comprises a computer workstation, an electrochemical analyzer, a four-electrode system, a change-over switch, an electrochemical detection tank and a magnetic stirrer; the electrochemical analyzer is connected to the computer workstation; the four-electrode system is connected onto a three-electrode binding post of the electrochemical analyzer through the change-over switch; the magnetic stirrer is below the electrochemical detection tank; and solution in the electrochemical detection tank is magnetically stirred. The trace metal ion detection device disclosed by the invention is obviously characterized in that auxiliary electrodes are configured into double electrodes, namely an auxiliary electrode and an additional auxiliary electrode; then, the auxiliary electrode and the additional auxiliary electrode form the four-electrode system with a working electrode and a reference electrode, therefore, the problem that auxiliary electrodes are polluted can be effectively solved; the reproducibility, the stability and the reliability of continuous measurement are improved; and continuous measurement of an automatic system can be conveniently carried out.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring or chemical analysis, and in particular relates to a trace metal ion detection device based on multi-auxiliary electrode stripping voltammetry and a method for using it. Background technique [0002] Heavy metal pollution has become one of the most harmful environmental problems. At the same time, its pollution is highly enriched and can be enriched in organisms through the food chain, causing greater harm to the environment and human health. Therefore, it is of great significance to establish a rapid and reliable detection method for trace heavy metal ions in food, medicine and environmental monitoring. Among them, anodic stripping voltammetry has long been considered an effective method for the determination of trace heavy metal ions. This technology is to enrich the substance to be tested on the working electrode through cathodic reduction first, then change the potential of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/48G01N27/30G01N27/38
Inventor 孙建军方磊郑朝燕宋子旺
Owner FUZHOU UNIV
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