Electrochemical sensor and its preparation method

Abstract

The invention provides an electrochemical sensor and a preparation method thereof. The electrochemical sensor comprises a sensor housing, a push rod with a cavity structure is arranged inside the sensor housing, an anode is arranged on the top of the push rod, a protective electrode is arranged on the upper part of the push rod, and A cathode is arranged in the middle of the rod, and an electrode connector is arranged under the ejector rod, and the electrode connector is fixed on the sensor shell. The preparation method of the electrochemical sensor of the present invention comprises the following steps: preparing the sensor shell, the push rod and the electrode joint; making the anode, placing the prepared anode on the top of the push rod; making the cathode, winding the cathode around the middle of the push rod; making To protect the electrode, wrap the protective electrode on the upper part of the ejector rod; put the sensor shell on the assembled anode, cathode, and protective electrode ejector rod; connect the electrode connector to the lower end of the sensor shell. The sensor of the present invention solves the problems of slow response speed, voltage drift, instability, high cost and short service life of the existing sensors, and at the same time, the interference factors can be minimized through optimization, so as to achieve rapid, accurate, stable and accurate detection of dissolved hydrogen. long-term measurement.

Description

technical field [0001] The invention belongs to the field of electrochemical analysis, and relates to a current covering diaphragm detection device, in particular to an electrochemical sensor and a preparation method thereof. The electrochemical sensor is applied in water for quantitative detection and continuous monitoring of dissolved hydrogen. Background technique [0002] In nature, hydrogen molecules dissolve into water to form dissolved hydrogen, which is an indicator in various biochemical reaction processes. Dissolved hydrogen can indicate the degree and stability of environmental reactions in these biochemical processes. For example, the observation of anaerobic bacteria shows that in stable The concentration of dissolved hydrogen in groundwater is 0.1-1.0nmol / L. During biodegradation, hydrogen is usually produced during anaerobic fermentation of hydrocarbons. Microorganisms typically consume hydrogen using a terminal electron acceptor, which refers to NO that under...

AI Technical Summary

Problems solved by technology

[0011] Aiming at the defects existing in the prior art, the present invention provides an electrochemical sensor, which can solve the problems of slow response speed, voltage drift, instability, high cost and short service life of the prior art sensor. Minimized, so as to realize accurate and stable dynamic technical detection of thermal equipment

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