Microflow control chip electrochemical detection device capable of accurately controlling electrode distance

Abstract

The invention provides a micro-fluidic chip electrochemical detection device which can accurately control the distance between electrodes, which comprises a micro-fluidic chip which is provided with a detection pool and a micro-flow pipeline, wherein one end of the micro-flow pipeline is communicated with a sample pool, a buffer pool and a sample waste liquid pool, and the other end of the micro-flow pipeline is connected with the detection pool. The invention is characterized in that a three-electrode system is arranged in the detection pool, wherein the working electrode detection end in the three-electrode system is positively faced to the outlet end of the micro-flow pipeline, and the working electrode is mounted on an adjusting-driving mechanism which can move relative to the outlet end of the micro-flow pipeline. The special structure of the micro-fluidic chip electrochemical detection device can lead the working electrode to lightly aim at the outlet end of a chip separator pipeline and accurately control the movement distance of an electrode. The invention has the advantages of convenient employment, fast measurement, excellent reproducibility, simple manufacture, convenient installation and low production cost.

Description

technical field [0001] The invention belongs to the technical field of electrochemical detection, and more specifically relates to a microfluidic chip electrochemical detection device capable of precisely controlling electrode distances. Background technique [0002] Microfluidic chip is a brand-new concept jointly proposed by Widmer and Mann of Ciba-Geigy Analytical Laboratory in Switzerland in the 1990s. It is supported by micro-electromechanical system (MEMS) technology and based on the theory of analytical chemistry. Based on the method and method, with microchannel network as the structural feature, life science and environmental science are the main application objects at present, and its purpose is to transfer all or part of the functions of the analytical laboratory to the smallest possible operating platform. At present, there are many types and studies of microfluidic chips, but it is difficult to align the working electrode and the exit position of the chip in the...

AI Technical Summary

Problems solved by technology

At present, there are many types and studies of microfluidic chips, but in the existing electrochemical detection devices for microfluidic chips, it is difficult to align the outlet positions of the working electrode and the chip, and it is difficult to accurately control the moving distance of the working electrode, so In the experiment, the reproducibility of the sample detection current is not good, and it takes a long time for the baseline to stabilize

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