发明名称 |
Interface for liquid chromotography-mass spectrometry systems. |
摘要 |
<p>An interface for a liquid chromatograph-mass spectrometer including single or multiple stage particle beam separators. The primary separator comprises a vacuum chamber (10) having a capillary inlet tube (46), a skimmer (24) having a particle outlet (22) opening axially aligned with the central axis of the capillary inlet tube and opposed thereto, and a vacuum exhaust port (26). The skimmer has a conical surface concentric with the central axis of the particle outlet opening. The vacuum exhaust port is preferably axially downstream ion the direction of gas and particle movement of a plane perpendicular to the flow axis and through the particle outlet opening. A second particle beam separator comprising a second conical surfaced skimmer in a vacuum chamber is preferably provided as a second stage separator. A method for separating particles from a gas stream in a vacuum chamber (10) is also disclosed, in which a stream of gas containing particles to be separated is passed into the vacuum chamber through a capillary inlet opening at a supersonic speed to form a standing barrel shock wave extending from the capillary inlet to the surface of a skimmer.</p> |
申请公布号 |
EP0343972(A2) |
申请公布日期 |
1989.11.29 |
申请号 |
EP19890305277 |
申请日期 |
1989.05.24 |
申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
BRANDT, RUNE;NORDMAN, ROBERT |
分类号 |
G01N27/62;G01N30/72;H01J49/04 |
主分类号 |
G01N27/62 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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