Evaluation of direct axial sample introduction for ion mobility detection after capillary gas chromatography.
Evaluation of direct axial sample introduction for ion mobility detection after capillary gas chromatography.
复制标题
毛细管气相色谱后离子淌度检测直接轴向进样的评估。
DOI：
10.1016/s0021-9673(01)83338-0
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
HillJr,HH
中科院分区：
文献类型：
--
作者：
StLouis,RH;Siems,WF;HillJr,HH
设计并制作了一种可直接与毛细管气相色谱进行轴向对接的离子迁移率检测器。该检测器的主要优点是：(1)将毛细管柱直接同心引入电离区，消除了传输线中的峰展宽，提高了中性分子从检测器中被扫掠的效率。(2)可变的毛细管插入距离，提供可根据分析需要进行修改的灵敏度/分辨率相互作用。(3)漂移圆柱体外部的惰性气体流动，防止大气杂质渗入超痕量探测器。用正己基醚标准制剂对检测器的定性和定量能力进行了评价。
An ion mobility detector has been designed and constructed for direct axial interfacing with capillary gas chromatography. The principle advantages of this detector were the following: (1) Direct concentric introduction of the capillary column into the ionization region, eliminating peak broadening in the transfer line and improving the efficiency with which neutral molecules were swept from the detector. (2) A variable capillary insertion distance, providing a sensitivity/resolution interplay that could be modified in response to the needs of the assay. (3) An inert gas flow external to the drift cylinder, preventing atmospheric impurities from infiltrating the ultratrace detector. Qualitative and quantitative capabilities of the detector were evaluated using standard preparations ofn-hexyl ether.