Methods for improved preconcentrators

Details Methods for improved preconcentrators Methods for improved preconcentrators

2007-01-30

2010-06-01

Lawrence, Frank M (Department: 1797)

Gas separation: apparatus

Solid sorbent apparatus

With means regenerating solid sorbent

C096S154000, C422S088000

Reexamination Certificate

active

07727314

ABSTRACT:
The present invention relates generally to chemical analysis (e.g. by gas chromatography), and in particular to a compact chemical preconcentrator formed on a substrate with a heatable sorptive membrane that can be used to accumulate and concentrate one or more chemical species of interest over time and then rapidly release the concentrated chemical species upon demand for chemical analysis.

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