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1. 发明授权

US5116764A Dual-column, dual-detector gas detector and analyzer 失效
标题翻译：双色谱柱，双检测器气体检测器和分析仪
公开(公告)号：US5116764A
公开(公告)日：1992-05-26
申请号：US224505
申请日：1988-07-26
申请人： Raymond Annino , Michael L. Bartlett , Edwin L. Karas , Dale E. Lueck , John L. Middleton , Richard Villalobos
发明人： Raymond Annino , Michael L. Bartlett , Edwin L. Karas , Dale E. Lueck , John L. Middleton , Richard Villalobos
IPC分类号： G01N30/46 , G01N30/78
CPC分类号： G01N30/466 , G01N30/78 , G01N2030/0095
摘要： A dual-column, dual-detector gas detector and analyzer employs both a photo-ionization detector and a flame-ionization detector. In a survey mode, samples of ambient air are driven through both detectors, and the outputs of both detectors are used to determine the presence of one or more gasses. In analysis mode, fixed-volume samples of ambient air are driven through two elution columns having different properties. The output of each elution column is fed to one of the detectors. The arrival times of gas peaks at the two detectors are employed to develop two lists of candidate gasses. The lists are cross-checked for the presence of each candidate on both lists. Candidates identified from their presence on both lists are identified. A further check attempts to identify candidates which are identifiable from their presence on one of the lists, and not on the other. Components identified in this way are added to the final list. Unidentified components are discarded, although their presence is noted and reported as unknown. Portability is retained by eliminating isothermal ovens and by reducing the quantity of hydrogen required. A simplified way of characterizing temperature corrections of elution columns is disclosed.
摘要翻译：双塔双检测器气体检测器和分析仪采用光电离检测器和火焰离子化检测器。在调查模式中，环境空气样本通过两个检测器进行驱动，两个检测器的输出用于确定一个或多个气体的存在。在分析模式下，环境空气的固定体积样品通过具有不同性质的两个洗脱塔驱动。每个洗脱塔的输出被送入一个检测器。采用两个探测器的气峰的到达时间来开发两个候选气体列表。这两个列表中的每个候选人的存在被交叉检查。确定在两个列表上存在的候选人。进一步检查会尝试从其中一个列表中识别可识别的候选人，而不是另一个。以这种方式识别的组件将添加到最终列表中。未知的组件被丢弃，尽管它们的存在被注意到并且被报告为未知的。通过消除等温炉和减少所需的氢气量来保持便携性。公开了描述洗脱塔的温度校正的简化方法。

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