William LaCourse - Catonsville MD, US Patrick Wigington - Fair Haven NJ, US
International Classification:
G01N001/00
US Classification:
073/863230
Abstract:
The present invention relates to apparatus for sampling and analysis of gas phase molecules. A source of negative pressure is used to draw gas phase molecules through a gas-permeable membrane. The gas phase molecules are then directed into an analyzer, suitably a gas chromatograph. The present invention also relates to methods of sampling and analyzing gas phase molecules above and below liquid and soil surfaces
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