发明名称 |
Apparatus and method for atmospheric pressure 3-dimensional ion trapping |
摘要 |
<p>The present invention provides an apparatus for selectively transmitting ions and trapping the ions within a defined 3-dimensional space at atmospheric pressure. The invention is based on the ion focussing principles of high field asymmetric waveform ion mobility spectrometry in which an analyzer region is defined by a space between first and second spaced apart electrodes, the analyzer region having a gas inlet and a gas outlet for providing a flow of gas through the analyzer region. Ions which are introduced into the analyzer region are carried by a gas flow towards a gas outlet. At least one of the electrodes has a curved surface terminus located near the gas outlet and the gas flow is adjusted so that ions are trapped in a defined 3-dimensional space located near the tip of the terminus. Trapping of ions in a defined 3-dimensional space allows a more concentrated flow of desired ions.</p> |
申请公布号 |
AU5144399(A) |
申请公布日期 |
2000.02.28 |
申请号 |
AU19990051443 |
申请日期 |
1999.08.05 |
申请人 |
NATIONAL RESEARCH COUNCIL CANADA |
发明人 |
ROGER GUEVREMONT;RANDY W. PURVES |
分类号 |
G01N27/62;B01D59/46;B01D59/48;G01N27/64;H01J49/04;H01J49/40;H01J49/42 |
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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