Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1978-08-07
1980-12-30
Spitzer, Robert H.
Gas separation
Means within gas stream for conducting concentrate to collector
55 60, 55 67, 55 78, 55181, 55208, 55390, B01D 5308
Patent
active
042421071
ABSTRACT:
An apparatus for sampling an atmosphere for the presence of a constituent in which a flow of the atmosphere is first drawn through a trap capable of releasably absorbing the constituent and the trap is then passed through a carrier gas stream which removes and conveys the constituent into a detector. The trap can comprise a rotatable disc of wire mesh which cuts continuously across a flow of the atmosphere and a carrier gas flow. The volume flow rate of the atmosphere is greater than that of the carrier gas so giving a large concentration gain of the constituent in the carrier flow. The apparatus can be used for detecting the presence in the atmosphere of vapors emanating from explosives and for this purpose the carrier gas flow can be directed into an electron capture detector.
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Casella Anthony J.
Spitzer Robert H.
Stallman Michael A.
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