Method and device for the detection and measurement of electroch

Details Method and device for the detection and measurement of electroch Method and device for the detection and measurement of electroch

1980-07-25

1982-04-27

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204195R, 204195P, G01N 2746, G01N 2752

Patent

active

043269273

ABSTRACT:
An electrochemical sensing device comprising a sensing electrode, a counter electrode, an electrolyte in contact with said sensing electrode and counter electrode, said sensing electrode comprising a porous hydrophobic substrate having vapor-deposited thereon a porous film of a catalyst to provicde a diffusion electrode, means for exposing said sensing electrode to the gas to be detected, means electrically coupled to said sensing electrode for maintaining said sensing electrode at a potential of about 0.4 volt to about 1.5 volt with respect to the potential of the reversible hydrogen couple in the electrolyte of said cell, and means for measuring current flowing between said sensing electrode and said counter electrode which measured current is a measure of the concentration of the noxious gas being detected.

REFERENCES:
patent: 3689394 (1972-09-01), Davies et al.
patent: 4001103 (1977-01-01), Blurton et al.
patent: 4182666 (1980-01-01), Dickinson et al.
patent: 4201634 (1980-05-01), Stetter

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