Preparation method of stainless steel sheet carbon glue working electrode

Abstract

The invention provides a preparation method of a stainless steel sheet carbon glue working electrode. The method comprises the following steps: S10, sequentially cutting, cleaning and drying a stainless steel plate to obtain an electrode conductive substrate; S20, mixing the conductive carbon paste with a diluent in proportion, and oscillating for 5 +/-1 min to obtain a uniform conductive carbon paste dispersion liquid; and S30, dropwise adding the conductive carbon paste dispersion liquid onto the electrode conductive substrate, drying at room temperature, and defining a detection area by using a porous adhesive tape to obtain a working electrode. According to the preparation method of the stainless steel sheet carbon glue working electrode, the stainless steel sheet is used for preparingthe working electrode on the basis of excellent properties and low cost of the stainless steel sheet, so that the cost for preparing the working electrode from materials such as glassy carbon, platinum and silver is greatly reduced; and meanwhile, the electrode modification process is simple and convenient, the preparation efficiency is high, and large-batch preparation can be realized in a shorttime.

Description

technical field [0001] The invention relates to the technical field of electrode preparation, in particular to a method for preparing a stainless steel sheet carbon glue working electrode. Background technique [0002] The accumulation of heavy metals in the human body will cause irreversible damage to the nerves and blood system, so the detection of heavy metals in the environment and contact products is particularly important. Inductively coupled plasma mass spectrometry, atomic absorption spectrometry, etc. are commonly used in heavy metal detection, but limited by equipment cost and professional technology, it is difficult to be widely used. Electrochemical square wave stripping voltammetry is often used in field and other environmental emergency testing because of its fast detection speed and accurate values. Square wave stripping voltammetry is to reduce and enrich some metal ions on the working electrode at a constant potential, and then apply a reverse voltage to ox...

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Problems solved by technology

Working electrode substrates commonly used in electrochemical experiments such as glassy carbon, platinum, silver and other materials are difficult to be widely used in practical applications due to cost constraints

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