Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1999-05-27
2000-10-10
Tung, T.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204415, 204432, 2057795, 205780, G01N 27404
Patent
active
061298247
ABSTRACT:
The present invention provides an electrochemical sensor for the detection of hydrogen chloride. In general, the electrochemical sensor comprises a housing having disposed therein a working electrode, a reference electrode and a counter electrode. The electrochemically active surface of the working electrode preferably comprises a gold film having a thickness of approximately 1000 to 3000 .ANG.. Electrical connection is maintained between the working electrode and the counter electrode via an electrolyte present within the housing. The electrochemical gas sensor preferably further comprises circuitry for maintaining the working electrode at a potential in the range of approximately 1025 to approximately 1400 mV versus the normal hydrogen electrode. The present invention also provides a method of using such a sensor to detect hydrogen chloride.
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patent: 4326927 (1982-04-01), Stetter et al.
patent: 5316648 (1994-05-01), Kuhn et al.
patent: 5624546 (1997-04-01), Milco
Deininger Debra J. Dorisio
Rollick Kelly P.
Bartony, Jr., Esq. Henry E.
Mine Safety Appliances Company
Tung T.
Uber, Esq. James G.
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