Ion Mobility Spectrometer Comprising a Corona Discharge Ionization Element
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    发明申请
    Ion Mobility Spectrometer Comprising a Corona Discharge Ionization Element 审中-公开
    包含电晕放电电离元件的离子迁移率光谱仪

    公开(公告)号:US20080272285A1

    公开(公告)日:2008-11-06

    申请号:US10599922

    申请日:2005-07-18

    IPC分类号: H01J49/10

    摘要: An ion mobility spectrometer is disclosed wherein the ionization element is a corona discharge source (300) consisting of: a first chamber (308) provided with an inlet (309) for a gas to be analyzed and with at least one first opening (311) for communication between the internal space of the first chamber and the reaction zone of the spectrometer; a second chamber (303), contained in the first chamber, provided with an inlet (306) for an ultra-pure gas or a mixture of ultra-pure gases, and with at least one second communication opening (310, 310′) between the first and the second chamber; a pair of electrodes (304, 302′), at least one of which (304) is needle-shaped, arranged in the second chamber, with the pair of electrodes and the second opening arranged in such geometrical relationships that there is no optical path between the zone of the corona discharge and the ion detector of the IMS instrument. The instrument of the invention allows to reproduce the results of a spectrometer equipped with a 63Ni ionization source, while avoiding the problems connected to the transportation and use of radioactive material.

    摘要翻译: 公开了一种离子迁移谱仪,其中电离元件是电晕放电源(300),该电晕放电源(300)包括:第一室(308),其设有用于待分析气体的入口(309)和至少一个第一开口(311) 用于第一室的内部空间与光谱仪的反应区之间的连通; 包含在第一室中的第二室(303)设置有用于超纯净气体或超纯净气体混合物的入口(306),以及至少一个第二连通开口(310,310')之间的第二室 第一和第二室; 一对电极(304,302'),其中至少一个(304)是针状的,布置在第二室中,一对电极和第二开口以几何关系排列,使得不存在光路 在电晕放电区域和IMS仪器的离子检测器之间。 本发明的仪器允许再现配备有 <! - SIPO - >电离源的光谱仪的结果,同时避免与放射性物质的运输和使用相关的问题。