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Microelectrode integrated sensing chip and application in rapid detection of organic pollutants in water

A sensor chip and micro-electrode technology, applied in the field of electrochemical detection, can solve the problems of long test time, untimely response, secondary pollution, etc., to shorten the detection time, improve the accuracy of detection data, and avoid easy deactivation Effect

Pending Publication Date: 2021-07-30
广州钰芯传感科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above analysis methods have problems such as long test time, untimely response, and secondary pollution caused by the use of reagents during the test.

Method used

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  • Microelectrode integrated sensing chip and application in rapid detection of organic pollutants in water
  • Microelectrode integrated sensing chip and application in rapid detection of organic pollutants in water
  • Microelectrode integrated sensing chip and application in rapid detection of organic pollutants in water

Examples

Experimental program
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Effect test

Embodiment 1

[0068] The front detection area of ​​the microelectrode integrated sensor chip is integrated with multiple microelectrodes, including working electrodes, reference electrodes and counter electrodes. The working electrode includes an electrode layer and a modification layer, the electrode layer includes an electrode base, a conductive inner layer and a reaction layer from bottom to top, and the modification layer is a nanoporous metal modification layer. The electrode layer is specifically the Cu layer of the electrode base layer, the Ni layer of the conductive inner layer and the Au layer of the reaction layer, that is, the nickel-gold electrodeposited on the surface of the copper bottom layer, wherein the thickness of the Cu layer is 10.0-15.0 μm, and the thickness of the Ni layer is 2.0-5.0 μm. The thickness of the Au layer is 0.05-0.10 μm. The periphery of the microelectrode is provided with a circular dam formed by coating with polymer materials to form a micro electrolyti...

Embodiment 2

[0076] The front detection area of ​​the microelectrode integrated sensor chip is integrated with multiple microelectrodes, including working electrodes, reference electrodes and counter electrodes. The working electrode includes an electrode layer and a modification layer, the electrode layer includes an electrode base, a conductive inner layer and a reaction layer from bottom to top, and the modification layer is a nanoporous metal modification layer. The electrode layer is specifically the Cu layer of the electrode base layer, the Ni layer of the conductive inner layer and the Au layer of the reaction layer, that is, the nickel-gold electrodeposited on the surface of the copper bottom layer, wherein the thickness of the Cu layer is 10.0-15.0 μm, and the thickness of the Ni layer is 2.0-5.0 μm. The thickness of the Au layer is 0.05-0.10 μm. The periphery of the microelectrode is provided with a circular dam formed by coating with polymer materials to form a micro electrolyti...

Embodiment 3

[0083] The front detection area of ​​the microelectrode integrated sensor chip is integrated with multiple microelectrodes, including working electrodes, reference electrodes and counter electrodes. The working electrode includes an electrode layer and a modification layer, the electrode layer includes an electrode base, a conductive inner layer and a reaction layer from bottom to top, and the modification layer is a nanoporous metal modification layer. The electrode layer is specifically the Cu layer of the electrode base layer, the Ni layer of the conductive inner layer and the Au layer of the reaction layer, that is, the nickel-gold electrodeposited on the surface of the copper bottom layer, wherein the thickness of the Cu layer is 10.0-15.0 μm, and the thickness of the Ni layer is 2.0-5.0 μm. The thickness of the Au layer is 0.05-0.10 μm. The periphery of the microelectrode is provided with a circular dam formed by coating with polymer materials to form a micro electrolyti...

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Abstract

The invention provides a microelectrode integrated sensing chip and application in rapid detection of organic pollutants in water. According to the invention, a plurality of microelectrodes are integrated in the same detection area of an electrode substrate of a sensing chip and are conducted and connected with electrode contacts on the back surface of the electrode substrate, the surface of the microelectrode is modified with a nano-porous metal modification layer to realize electrochemical enzyme-free detection and electrode contact conduction of a three-electrode system to realize the purpose of simultaneously detecting a plurality of indexes at one time, and a micro box dam is arranged around the microelectrode to prevent a detection solution from overflowing out of a detection range to cause interference. The sensing chip can be used for rapid detection of organic pollutants in water.

Description

technical field [0001] The invention belongs to the field of electrochemical detection, in particular to a micro-electrode integrated sensor chip and its application in rapid detection of water quality organic pollutants. Background technique [0002] Water quality safety is the top priority of the country, and water environment safety is the foundation to ensure the safety of drinking water, among which organic pollution is an unavoidable problem in water quality analysis. The concentration of organic pollutants in water is very low, and routine water quality analysis is not easy to detect. The methods currently used for the detection of organic pollutants in water include: gas chromatography, gas chromatography-mass spectrometry, gas chromatography and Fourier transform infrared spectroscopy, high performance liquid chromatography, liquid chromatography-gas chromatography, etc. . However, the above analysis methods have problems such as long test time, untimely response,...

Claims

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Application Information

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IPC IPC(8): G01N27/30
CPCG01N27/307G01N27/308G01N27/301
Inventor 奚亚男胡保帅崔皓博
Owner 广州钰芯传感科技有限公司
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