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1. 发明授权

US06455003B1 Preconcentrator for chemical detection 失效
标题翻译：化学检测预收敛剂
公开(公告)号：US06455003B1
公开(公告)日：2002-09-24
申请号：US09441734
申请日：1999-11-17
申请人： Fredrick Anvia , John A. Elton
发明人： Fredrick Anvia , John A. Elton
IPC分类号： G01N3096
CPC分类号： G01N1/40 , G01N1/405 , Y10T436/255
摘要： An apparatus for detecting chemicals in a fluid includes a preconcentrator tube connected to a bi-directional pump and to a detector. The preconcentrator tube contains a sorbent material in thermal contact with a heating element. The bi-directional pump pumps fluid in a first direction through the sorbent material, thereby causing some of the chemicals to accumulate on one side of the sorbent material. The bi-directional pump is reversed so as to pump fluid in a second opposite direction, thereby causing the accumulated chemicals to be carried to the detector. The sorbent material is heated while the bi-directional pump is reversed. Preferably, the detector is equipped with a separate pump that draws fluid to the detector.
摘要翻译：用于检测流体中的化学物质的装置包括连接到双向泵和检测器的预浓缩管。预浓缩器管含有与加热元件热接触的吸附剂材料。双向泵通过吸附剂材料沿第一方向泵送流体，从而使一些化学物质积聚在吸附剂材料的一侧上。双向泵反向，以便在第二相反方向泵送流体，从而使积聚的化学物质被运送到检测器。当双向泵反向时，吸附剂材料被加热。优选地，检测器配备有将流体吸引到检测器的单独的泵。

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