Pollution monitoring apparatus

Details Pollution monitoring apparatus Pollution monitoring apparatus

1975-09-29

1977-06-28

Serwin, R.E.

Chemistry: physical processes

Physical processes

Crystallization

23232E, 23255E, G01N 2114, G01N 2148, G01N 2130

Patent

active

040322971

ABSTRACT:
Apparatus for the detection and/or analysis of pollutant gases comprising a light-reflective surface sensitive to a pollutant gas which is capable of reaction with the pollutant gas to cause a decrease in the reflectivity of the surface, light source means positioned to pass a beam of light angularly onto the surface and light-sensing means positioned to receive light reflected from the surface and means to contact a gas stream containing the pollutant gas with the surface whereby the decrease in light-reflectivity serves as a measure of the concentration of the pollutant gas in the sample and the rate of decrease in reflectivity serves as a measure of the dose rate of the pollutant gas to which one in the environment from which the pollutant gas is taken is subjected.

REFERENCES:
patent: 2800397 (1957-07-01), Offutt et al.
patent: 2895807 (1959-07-01), Sorg et al.
patent: 3111391 (1963-11-01), Filippi
patent: 3460153 (1969-08-01), White
patent: 3705014 (1972-12-01), Townsley

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