Electrochemical sensor with solid polymer electrolyte and gas detection method using the same

Abstract

This invention relates to a solid polymeric electrolyte electrochemical gas sensor of high precision and good reproducibility, which comprises the following parts: solid polymeric electrolytic film, checking room wherein there are present sensitive pole and reference electrode room which consists of reference electrode and double electrodes. The sensitive electrode and double electrode adhere to the electrolytic film. The reference electrode room is full of stagnant electrolyte and connects many multi-impulse signal senders and detecting routes. The sensor detects the program gas by multi-impulse signal sender, which forces electric potential between the sensitive and reference electrolyte. Two respond current differential values detect the content of present gas, which adapt an one-impulse respond current under multi-impulse controlling electric potential and a respond current under another impulse potential without present electrochemical gas for sensitive electrode.

Description

technical field [0001] The invention relates to a gas detection device and a detection method, in particular to a gas sensor device and a gas detection method using it. Background technique [0002] The detection of gas partial pressure or content in the environment or sample gas has been paid more and more attention. It is mainly used in environmental protection, life and production process control. These fields require real-time, fast and simple detection of the environment or sample gas. The gas content in the gas can be displayed in real time, such as the dynamic monitoring of the atmospheric environment, the detection of automobile exhaust, etc.; sometimes it is required to directly input the detection signal to the automatic control equipment to realize the automatic control of the process, such as combustion control, control and adjustment of the air conditioning system , Control and regulation of biological fermentation process, etc. Among the e...

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Problems solved by technology

[0024] The present invention solves the problem that the electrochemical gas sensor using the solid polymer film still has a liquid electrolyte and the electrolyte dries up and leaks, and the water content of the solid polymer film produced without the liquid electrolyte is easy to change with time or the detection medium , thereby affecting the detection accuracy and reproducibility problems; the present invention also solves the above-mentioned low analytical sensitivity, poor selectivity, small concentration range of detection, and reproducible detection results existing in the method for detecting gas by electrochemical gas sensors currently used sex problem

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