Apparatus for measuring alcohol concentrations

Details Apparatus for measuring alcohol concentrations Apparatus for measuring alcohol concentrations

1974-03-20

1976-06-29

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

136 86R, 324 30R, G01N 2746

Patent

active

039665798

ABSTRACT:
Alcohol concentrations present in a gaseous breath sample are monitored by measuring the magnitude of the short circuit current passing through the external circuit between the anode and cathode of a fuel cell. The anode and cathode are positioned on opposite sides of a cationic exchange membrane and an aqueous acid electrolyte between the cathode and membrane assists ion and electron transfer. Alcohol introduced at the anode is electrooxidized while oxygen supplied to the cathode is electroreduced.

REFERENCES:
patent: 3149921 (1964-09-01), Warner
patent: 3776832 (1973-12-01), Oswin et al.
patent: 3824166 (1974-07-01), Deibert
patent: 3824167 (1974-07-01), Oswin et al.

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