发明名称 |
Vacuum membrane extraction system |
摘要 |
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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申请公布号 |
US2004154414(A1) |
申请公布日期 |
2004.08.12 |
申请号 |
US20040772470 |
申请日期 |
2004.02.06 |
申请人 |
LACOURSE WILLIAM R.;WIGINGTON PATRICK DEVIN |
发明人 |
LACOURSE WILLIAM R.;WIGINGTON PATRICK DEVIN |
分类号 |
G01N1/22;G01N1/24;G01N30/12;G01N30/14;(IPC1-7):G01N1/00 |
主分类号 |
G01N1/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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