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Microwave-electric chemical rapid heavy-metal detector and application thereof

A detection device, heavy metal technology, applied in the direction of measuring devices, electrochemical variables of materials, material analysis using microwave means, etc., can solve the problems of expensive cost, complexity, lengthy analysis time, etc., and achieve an improved level of effect

Inactive Publication Date: 2010-01-06
EAST CHINA NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of these methods are: the need for large and complex instruments and equipment, lengthy analysis time, complex and cumbersome analysis process, high cost, etc.
However, its common disadvantage is that it uses a large amount of mercury or mercury salts, which is easy to cause secondary pollution to the environment

Method used

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  • Microwave-electric chemical rapid heavy-metal detector and application thereof
  • Microwave-electric chemical rapid heavy-metal detector and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Heavy Metal Electrochemical Detection System I

[0067] Such as figure 1 shown.

[0068] The heavy metal electrochemical detection system 1 includes a microwave analysis detection device, a heavy metal fast analyzer 10 and a data processing system 11. The microwave analysis and detection device includes: a sample cell 1, a peristaltic pump 2, a reference electrode 3, an auxiliary electrode 4, a working electrode 5, an electrolytic cell 6, a shielding sleeve 7, an electrode bracket composition 8, and a recovery cell 9.

[0069] The working electrode is electroplated with 60nm gold nanoparticles.

[0070] Wherein, the liquid to be tested in the sample cell is powered by a peristaltic pump, passes through a polytetrafluoroethylene tube, flows through the reference electrode and enters the electrolytic cell. Microwaves are added during the electrochemical detection process; after the detection, the sample liquid is powered by a peristaltic pump, flows through the PTFE tu...

Embodiment 2

[0072] Detection of Cu(II) ion content in drinking water

[0073] Carry out following test with the heavy metal electrochemical detection system 1 of embodiment 1:

[0074] In the first step, the platinum microelectrode decorated with metal gold nanoparticles is used as the working electrode, placed in a high-voltage microwave field, and the position of the electrode is kept in the center of the microwave field. Connect the reference electrode and auxiliary electrode.

[0075] The second step is to connect the constant current peristaltic pump, put the sample inlet of the polytetrafluoroethylene tube into the electrolytic cell, and put the sample outlet into the sample cell to ensure that the entire pipeline is smooth and there is no leakage, and then turn on the constant flow A peristaltic pump is used to make the actual drinking water flow from the sample cell into the electrolytic cell, and the volume is generally 1-5ml.

[0076] In the third step, after the sample inject...

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Abstract

The invention discloses a heavy-metal electric-chemical rapid detector, which comprises an electric-chemical analysis system and a microwave emitter, wherein the electric-chemical analysis system comprises a peristaltic pump, a work electrode, an assistant electrode, a reference electrode, a screening sleeve and an electrolytic cell, wherein the peristaltic pump is arranged between a sample to be detected and the reference electrode or the assistant electrode, the screening sleeve is arranged between the electrolytic cell and the reference electrode or the assistant electrode, the work electrode partially extends into the electrolytic cell, the part of the work electrode above the electrolytic cell is wrapped by the screening sleeve, and the assistant electrode and the reference electrode are arranged above the screening sleeve. The invention also discloses a heavy-metal electric-chemical detection system and a detection method of heavy metals in the sample.

Description

technical field [0001] The invention relates to a microwave-electrochemical analysis instrument for rapid detection of heavy metals, in particular to an analysis device for rapid detection of heavy metals by combining nanometer sensing technology and microwave-electrochemical technology. Background technique [0002] In recent years, the safety of drinking water and food has attracted much attention. With the rapid development of industrial and agricultural production and science and technology, the extensive use of pesticides and chemical fertilizers and the discharge of "three wastes" in industrial and mining industries inevitably bring about many environmental problems, among which heavy metal pollution is one of the main environmental pollution. Heavy metal pollutants are difficult to degrade in the environment. They can accumulate in water bodies, animals and plants, and gradually enrich through the food chain. The concentration can increase by tens of thousands of time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/48G01N22/00G01N27/30
Inventor 金利通许贺张和清曾立平邢苏洁鲜跃仲施国跃
Owner EAST CHINA NORMAL UNIV
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