发明授权
- 专利标题： Sample feeding device for trace detector and trace detector with sample feeding device
- 专利标题（中）： 采样装置用于跟踪检测器和跟踪检测器
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申请号： US13142523申请日： 2011-05-16
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公开(公告)号： US08278627B2公开(公告)日： 2012-10-02
- 发明人: Yuanjing Li , Zhiqiang Chen , Qingjun Zhang , Shaoji Mao , Ziran Zhao , Yinong Liu , Shiping Cao , Yan Zheng , Jianping Chang , Xiang Zou
- 申请人： Yuanjing Li , Zhiqiang Chen , Qingjun Zhang , Shaoji Mao , Ziran Zhao , Yinong Liu , Shiping Cao , Yan Zheng , Jianping Chang , Xiang Zou
- 申请人地址： CN Beijing CN Beijing
- 专利权人： Nuctech Company Limited,Tsinghua University
- 当前专利权人： Nuctech Company Limited,Tsinghua University
- 当前专利权人地址： CN Beijing CN Beijing
- 代理机构： Westman, Champlin & Kelly, P.A.
- 优先权： CN201010619932 20110516
- 国际申请： PCT/CN2011/074079 WO 20110516
- 主分类号： H01J49/04
- IPC分类号： H01J49/04 ; B01D59/44 ; G01N1/10
摘要：
A sample feeding device for a trace detector is disclosed. The sample feeding device comprises: a sample feeding chamber disposed in the sample feeding device to desorb a sample from a sample feeding member; and a valve assembly configured to fluidly communicate the sample feeding chamber with a drift tube of the trace detector during feeding sample. With the above configuration of the present invention, for example, the sensitivity of the detector can be increased by improving the permeation ratio of the sample. In addition, interior environment of the drift tube is isolated from exterior environment to avoid a drift region of the drift tube from being polluted. The important parameters, such as sensitivity, a position of a peak of a substance, a resolution, of the detector can be kept constant. As a result, operation reliability and consistency of the detector can be achieved.