Measuring and testing – Gas analysis – Gas chromatography
Patent
1987-02-25
1989-04-11
Levy, Stewart J.
Measuring and testing
Gas analysis
Gas chromatography
73 28, G01N 122, G01N 3106
Patent
active
048194778
ABSTRACT:
A disposable plastic cartridge contains three fine lightweight wire mesh collectors, each of phosphor bronze. One collector has an oxidized surface for collecting drug particulates. The other two have surfaces electroplated with zinc to form a rough multi-fissured surface for trapping low volatility vapors. In use, a portion of a warm sample air stream is chilled and passed through the collectors in parallel for sample collection. Simultaneously part of the sample air stream by-passes the chiller and is fed directly into a mass analyzer for real time analysis. Next, both collection and real time analysis are terminated, and each collector is desorbed in sequence with a pulse of hot air which flows into the mass analyzer for sequential analysis.
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Fisher William H.
Stott William R.
Thomson Bruce A.
Weisz-Margulescu Adam
Levy Stewart J.
MDS Health Group Limited
Williams Hezron E.
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