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1. 发明申请

WO03060508A3 METHOD AND DEVICE FOR VAPORIZATION INJECTION OF HIGH VOLUMES IN GAS CHROMATOGRAPHIC ANALYSIS 审中-公开
标题翻译：用于气相色谱分析中高压注入的方法和装置
公开(公告)号：WO03060508A3
公开(公告)日：2003-10-09
申请号：PCT/IB0205506
申请日：2002-12-19
申请人： THERMO FINNIGAN ITALIA S P A , MAGNI PAOLO , PORZANO THOMAS
发明人： MAGNI PAOLO , PORZANO THOMAS
IPC分类号： G01N30/02 , G01N30/12 , G01N30/16
CPC分类号： G01N30/16 , G01N30/12 , G01N2030/025 , G01N2030/127 , G01N2030/165 , G01N2030/167
摘要： This invention concerns a method and apparatus for vaporization injection of large volumes of liquid sample (substance to be analysed + solvent) introduced by means of the needle of a syringe onto a heated vaporization chamber which is part of an injector applied to a device for gas chromatographic analysis, the sample being sent in form of a liquid band travelling through said vaporization chamber at high speed until reaching stopping and vaporization means positioned adjacent to the inlet of a capillary to collect the vapours. In order to inject large volumes without modifying the vaporization chamber and without samples parts losses, in splitless mode, a drawing up of the sample vapours from the vaporization chamber into said capillary is made by means of a local action of volume contraction, caused by recondensation of at least the solvent vapours in this capillary, said capillary being in the form of a pre-column with no stationary phase, maintained at low temperature at least during the injection.
摘要翻译：本发明涉及一种用于将大量待注射器针引入的液体样品（待分析物质+溶剂）蒸发注入加热的蒸发室的方法和装置，该蒸发室是喷射器的一部分，该喷射器应用于气体装置色谱分析，样品以高速行进通过所述蒸发室的液体带的形式发送，直到达到停止并且蒸发装置位于毛细管入口附近以收集蒸气。为了注入大量而不改变蒸发室并且没有样品部件损失，在不分流模式下，样品蒸气从汽化室进入毛细管的方法是通过由再缩合引起的体积收缩的局部作用至少在该毛细管中的溶剂蒸气，所述毛细管呈不具有固定相的预柱形式，至少在注射期间保持在低温。

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