Semiconducting oxide gas sensors

Details Semiconducting oxide gas sensors Semiconducting oxide gas sensors

1997-12-09

2000-04-04

Soderquist, Arlen

Chemistry: analytical and immunological testing

Sulfur containing

Organic or sulfhydryl containing

436122, 436127, 436128, 436131, 436132, 436133, 436134, 436137, 436139, 436140, 436141, 436142, 436151, 73 3106, 422 90, 422 98, 422 95, G01N 3300

Patent

active

060460547

ABSTRACT:
The selectivity of response of resistive gas sensors to specific gases or vapors is improved by the selection of specified gas-sensitive materials which are not previously known for the applications described, which include detection of hydrocarbons in the presence of CO, H.sub.2 S, SO.sub.2, chlorine, NO.sub.2, CO.sub.2 (especially in low concentrations), CFC's, ammonia, free oxygen by determination of partial pressures, and numerous organic gases and vapors.

REFERENCES:
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M. Metikos-Hukovic et al, Mat. Res. Bull. 1988, 23, 1535-1544.
M. I. du Silva Pereira et al, J. Chem. Soc., Faraday Trans. I 1989, 85, 2473-2480.
S. Cheng et al. J. Catal. 1990, 122, 1-9.
M. Eibschutz et al. Appl. Phys. Lett. 1992, 60, 830-832.
T. Oyama et al. J. Mater. Sci. Lett. 1992, 11, 1573-1575.

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