Device for the detection and measurement of noxious gases

Details Device for the detection and measurement of noxious gases Device for the detection and measurement of noxious gases

1977-03-10

1978-11-28

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

G01N 2746

Patent

active

041274628

ABSTRACT:
Noxious gases are electrochemically detected and measured in the presence of carbon monoxide using a device employing an electrochemical cell whose sensing electrode comprises a carbon supported gold catalyst and is maintained at a fixed potential of about 0.4 volt to about 1.5 volt with respect to a reversible hydrogen electrode in said electrolyte of the electrochemical cell. In its preferred form the sensing electrode comprises carbon particles containing catalytic amounts of gold bonded to a hydrophobic material to provide a diffusion electrode.

REFERENCES:
patent: 3291753 (1966-12-01), Thompson
patent: 3382103 (1968-05-01), Smith
patent: 3776832 (1973-12-01), Oswin et al.
patent: 3824167 (1974-07-01), Oswin et al.
patent: 4001103 (1977-01-01), Blurton et al.

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