发明名称 |
Pulsed carrier gas flow modulation for selectivity enhancements with gas chromatography using series-coupled column ensembles |
摘要 |
A gas chromatography system having a computer-controlled pressure controller that delivers pressurized pulses to a column junction point of two series-coupled columns having different stationary-phase chemistries and a method of using the same. Each pressurized pulse causes a differential change in the carrier gas velocities in the two columns, which lasts for the duration of the pressurized pulse. Whereby, the pressurized pulse selectively increases the separation of a component pair that exhibits separation at the exit of the first column, but otherwise co-elutes from the column ensemble.
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申请公布号 |
US2003109054(A1) |
申请公布日期 |
2003.06.12 |
申请号 |
US20010016798 |
申请日期 |
2001.12.10 |
申请人 |
SACKS RICHARD D.;VERIOTTI TINCUTA M.;MCGUIGAN MEGAN E.;WHITING JOSHUA JONATHAN M. |
发明人 |
SACKS RICHARD D.;VERIOTTI TINCUTA M.;MCGUIGAN MEGAN E.;WHITING JOSHUA JONATHAN M. |
分类号 |
G01N30/02;G01N30/32;G01N30/46;G01N30/62;(IPC1-7):G01N30/02 |
主分类号 |
G01N30/02 |
代理机构 |
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地址 |
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