Plasma treatment device and method for pretreatment of test strip electrodes

Abstract

The invention discloses a plasma processing device and a plasma processing method for test strip electrode preprocessing. The test strip electrode preprocessing method comprises the following steps: setting an initial position, and carrying out plasma processing on a reaction area at the initial position; carrying out plasma processing on the reaction area along the extending direction of the reaction area, and changing the surface wetting property of the reaction area to hydrophilic; and setting an ending position, and stopping plasma processing on the reaction area at the ending position. According to the method provided by the invention, plasma processing is carried out on the reaction area of a carbon paste electrode, the working gas is ionized under the effect of a high-voltage electric field, a plasma gas is produced eventually to bite the carbon paste electrode, the hydrophilicity on the surface of the carbon paste electrode is improved greatly, and foreign matters on the surface of the electrode are removed. Meanwhile, hydrophilic groups such as carboxyl and hydroxyl are produced on the surface of the carbon paste electrode, so that enzyme liquid can spread on the surface of the electrode evenly and completely, the stability of test strip electrodes is ensured, and the production efficiency is high.

Description

technical field [0001] The invention relates to the field of blood glucose test paper electrode processing, in particular to a plasma treatment device and method for pretreatment of test strip electrodes. Background technique [0002] In electrochemical biosensors, test strip electrodes made of carbon paste electrodes are generally used. The test strip electrodes include substrates, electrochemical electrodes and thin film layers. The electrochemical electrodes include working electrodes, reference electrodes and counter electrodes, thin film The layer includes enzyme, polymer support and pH buffer, etc., and the film layer is coated on the electrochemical electrode area. [0003] When the sample to be tested is in contact with the above-mentioned electrodes, a chemical reaction will occur, and the concentration of the sample to be tested is determined by using the electrochemical signal generated by the electrode of the test strip. [0004] In the prior art, the manufactur...

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Problems solved by technology

[0009] In the prior art, before coating the enzyme liquid, a layer of highly hydrophilic polymer is pre-coated on the electrode to adjust the hydrophobicity of the electrode surface to be hydrophilic. The method in the prior art has Defects of long processing process and unstable product quality

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