Apparatus for detecting traces of a gas

Details Apparatus for detecting traces of a gas Apparatus for detecting traces of a gas

1979-03-13

1980-11-25

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204 1T, G01N 2754

Patent

active

042356890

ABSTRACT:
The measuring cell for detecting traces of nitrogen dioxide comprises a working electrode, preferably a silver mesh coated with silver iodide, an auxiliary and a reference electrode. The working electrode is an ion-selective electrode and cathodically polarized. If a reactor is preceded, in which the gas is oxidized by heating, other nitrogen containing gaseous substances, f. e. acrylonitrile and hydrocyanic acid, can also be detected very sensitively.

REFERENCES:
patent: 3909204 (1975-09-01), Allen
patent: 4001103 (1977-01-01), Blurton et al.
patent: 4052268 (1977-10-01), Blurton et al.
patent: 4149948 (1979-04-01), Petersen et al.

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