Apparatus for the detection of volatile organic substances

Details Apparatus for the detection of volatile organic substances Apparatus for the detection of volatile organic substances

1978-01-09

1979-09-04

Scovronek, Joseph

Measuring and testing

Gas analysis

Gas chromatography

422 88, 422 90, 422 98, 250383, G01N 2762, G01N 3106

Patent

active

041663799

ABSTRACT:
An apparatus for detecting the presence of volatile, organic substances in gaseous mixtures comprises a filament on which the substances are absorbed when the filament is cold and released when hot, an electron capture device to detect the emitted substances, a primary and a secondary flow of inert gas, and a valve system in which system an inlet valve which admits the gaseous mixture automatically closes when the gas pressure of the gases within the apparatus exceeds the ambient pressure, the presence of the volatile organic substances being indicated by an output signal from the electron capture device. The apparatus alternatively may be used for controlling the flow of gases containing organic volatile substances.
The filament may be sensitive to specific vapors.

REFERENCES:
patent: 1467084 (1923-09-01), Bassett
patent: 2904406 (1959-09-01), Moore
patent: 3068402 (1962-12-01), Redhead
patent: 3883739 (1975-05-01), Jenkins

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