Disposable ampere type immunosensor for detecting two or four drops and preparing and using method thereof

An immunosensor and sensor technology, which can be applied to instruments, measuring devices, scientific instruments, etc., can solve the problems of long detection time and detection steps, and achieve the effects of fast detection speed, low cost and simple operation.

Inactive Publication Date: 2005-04-06
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The detection time and detection ste

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  • Disposable ampere type immunosensor for detecting two or four drops and preparing and using method thereof
  • Disposable ampere type immunosensor for detecting two or four drops and preparing and using method thereof
  • Disposable ampere type immunosensor for detecting two or four drops and preparing and using method thereof

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Embodiment Construction

[0024] A disposable amperometric immunosensor for detecting 2,4-D proposed by the present invention and its preparation and use method are further described in conjunction with the accompanying drawings and examples as follows:

[0025] A disposable amperometric immunosensor for detecting 2,4-D of the present invention such as figure 1 Shown:

[0026] The sensor adopts a thick-film electrode prepared by a screen printing process, and adopts a concentric three-electrode structure. The electrode structure includes a PVC substrate 6, and carbon disc electrodes 1, which are concentrically distributed on the substrate 6 by screen printing. The comparison electrode 2, the counter electrode 3 and the terminal 5 connected with each electrode, the insulating layer 4, and the biomolecular film layer fixed on the carbon disk electrode.

[0027] The diameter of the carbon disk electrode 1 of the embodiment of the present invention is 2mm, the radius of the reference electrode 2 is 2mm, a...

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Abstract

This invention relates to a disposable ampere immune sensor and its process method, which belongs to environment measurement field. The sensor adopts thick-film electrode made with wire net printing process, which is characterized by the following: PVC base plate, orderly distributed carbon round disc, reference electrode, pair electrode and connection ends with each electrode, isolation layer on the base plate, biology molecule film layer fixed on the carbon round electrode.

Description

technical field [0001] The invention belongs to the field of environmental monitoring, in particular to a new technology capable of rapidly detecting 2,4-D. This disposable immunosensor can be used for rapid monitoring of pollution in lakes, reservoirs, rivers, sewage treatment plants, pesticide factories, etc., and can also be used for rapid detection of 2,4-D pesticide residues in vegetables and other foods. Background technique [0002] Since the 1940s, humans have used a large number of synthetic organic chemical pesticides to prevent and control farmland diseases and insect pests. 2,4-D is 2,4-dichlorophenoxyacetic acid (2,4-D ichlorophenoxyacetic Aci D, the Chinese name is abbreviated as 2,4-D) It is a herbicide and plant growth regulator widely used in the world. It is one of the pesticides with annual sales of more than 100 million yuan in the world. It is also the 22 kinds of pesticides that are most widely used in the world and have the greatest impact on global ag...

Claims

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Application Information

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IPC IPC(8): G01N27/327G01N27/42G01N33/53G01N33/561
Inventor 施汉昌何苗蔡强
Owner TSINGHUA UNIV
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