Ambient ether vapor testing apparatus and method

Details Ambient ether vapor testing apparatus and method Ambient ether vapor testing apparatus and method

1991-06-03

1992-12-08

Williams, Hezron E.

Measuring and testing

Gas analysis

Gas chromatography

G01N 3008

Patent

active

051687461

ABSTRACT:
A portion of the ambient air, including the selected vapor such as the ether vapor fraction, is first cryogenically liquefied for concentration in a collecting vessel (12). Thereafter, the concentrated liquefied fraction is boiled off and passed through gas chromatography column (34) to separate the fractions in the vapor stream. The selected vapor fraction is eluted at the temperature, and its concentration is detected by thermal conductivity detector (42) so that the concentration of the selected vapor in the environment is signaled.

REFERENCES:
patent: 3053077 (1962-09-01), Tracht
patent: 3427863 (1969-02-01), Schultz
patent: 4042326 (1977-08-01), Kallos
patent: 4185490 (1980-01-01), Clouser et al.

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