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Electrochemical sensor for simultaneously determining epinephrine and ascorbic acid

A technology of ascorbic acid and epinephrine, which is applied in the fields of electrochemical variables of materials, scientific instruments, instruments, etc., can solve the problems of difficulties in electrochemical sensors, etc.

Inactive Publication Date: 2007-10-24
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Because ordered mesoporous carbon is very stable and insoluble in water and common organic solvents, it is very difficult to directly use it to prepare electrochemical sensors.

Method used

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  • Electrochemical sensor for simultaneously determining epinephrine and ascorbic acid
  • Electrochemical sensor for simultaneously determining epinephrine and ascorbic acid
  • Electrochemical sensor for simultaneously determining epinephrine and ascorbic acid

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Embodiment Construction

[0017] Referring to Fig. 1, the electrochemical sensor of the present invention comprises glassy carbon electrode 1, and the top of glassy carbon electrode 1 is glassy carbon substrate 3, and glassy carbon substrate 3 is connected with electrode lead 4, and electrode lead 4 periphery is insulating layer 5, and insulating layer 5 outside for the sensor housing. The surface of the glassy carbon substrate 3 is coated with a sensitive film 2 .

[0018] The sensitive membrane 2 is obtained by the following method: adding ordered mesoporous carbon and cation exchange polymer Nafion (produced by DuPont, USA) into distilled water, so that the mass percentage of ordered mesoporous carbon is 0.05%, and the content of cation exchange polymer Nafion is The mass percentage content is 1%, and then ultrasonically dispersed until a uniform, light black ordered mesoporous carbon-cation exchange polymer Nafion dispersion is obtained, and the ordered mesoporous carbon-cation exchange polymer Naf...

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PUM

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Abstract

The invention belongs to an electrochemical test device, in particular to an electrochemical sensor for testing adrenalin and ascorbic acid synchronously, comprising a glass-carbon electrode which surface is coated by a sequential porous carbon-cation exchange polymer Nafion sensitive film. The invention uses the cation exchange polymer Nafion as disperser, to easily disperse sequential porous carbon in stable property into water. And the electrochemical sensor composed of a sensitive film made by coating the disperser liquid on the surface of the glass-carbon electrode and the glass-carbon electrode can synchronously adrenalin and ascorbic acid.

Description

technical field [0001] The invention belongs to electrochemical testing devices, in particular to an electrochemical sensor for simultaneously measuring epinephrine and ascorbic acid. Background technique [0002] Epinephrine (EP) is an important neurotransmitter in the mammalian central nervous system. Its concentration in the body affects a variety of physiological processes. The disorder of its metabolism can lead to the occurrence of certain diseases, and its prominent role is to increase renal blood flow and improve blood supply to vital organs during shock. Electroanalytical chemistry is widely used in the direct electrochemical detection of living substances due to its advantages of high sensitivity, good selectivity, short response time, and low cost of required instruments and equipment. However, the electrochemical properties of ascorbic acid (AA) coexisting in the human body are very similar to adrenaline, and it will have irresistible effects to measure them wi...

Claims

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Application Information

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IPC IPC(8): G01N27/36G01N27/327G01N33/74
Inventor 郭黎平周明白静
Owner NORTHEAST NORMAL UNIVERSITY
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