发明名称 |
Evacuable inlet for gas chromatograph injector |
摘要 |
A gas chromatography (GC) system comprises: a sample injector adapted to receive a liquid sample into an interior cavity thereof and to volatilize the liquid sample; a GC column configured to receive the volatilized sample from the sample injector; a carrier gas inlet line fluidically coupled to a gas inlet port of the sample injector; a septum purge vent line fluidically coupled to a first gas outlet port of the sample injector; a split-flow vent line fluidically coupled to a second gas outlet port of the sample injector; and a vacuum system configured to apply vacuum to the septum purge vent line, the split-flow vent line and the interior cavity of the sample injector. Alternatively, the vacuum system may be coupled to a vacuum port of the sample injector. A separate flow of helium gas may be supplied to an inlet of the GC column. |
申请公布号 |
US9170241(B2) |
申请公布日期 |
2015.10.27 |
申请号 |
US201313788207 |
申请日期 |
2013.03.07 |
申请人 |
Thermo Finnigan LLC |
发明人 |
McCauley Edward B. |
分类号 |
G01N30/16;G01N30/26;G01N30/12;G01N30/18;G01N30/54 |
主分类号 |
G01N30/16 |
代理机构 |
|
代理人 |
Cooney Thomas F. |
主权项 |
1. A gas chromatography (GC) system comprising:
a sample injector adapted to receive a liquid sample into an interior cavity thereof and to volatilize the liquid sample; a GC column configured to receive the volatilized sample from the sample injector, wherein the sample injector is configurable to perform either split injection or splitless injection into the GC column; a carrier gas inlet line fluidically coupled to a gas inlet port of the sample injector; a septum purge vent line fluidically coupled to a first gas outlet port of the sample injector; a split-flow vent line fluidically coupled to a second gas outlet port of the sample injector; and a vacuum system configured to place the septum purge vent line, the split-flow vent line and the interior cavity of the sample injector under vacuum. |
地址 |
San Jose CA US |