发明名称 |
Apparatus and method for atmospheric pressure-3-dimensional ion trapping |
摘要 |
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 wave-form 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.
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申请公布号 |
US6621077(B1) |
申请公布日期 |
2003.09.16 |
申请号 |
US20010762237 |
申请日期 |
2001.04.12 |
申请人 |
NATIONAL RESEARCH COUNCIL CANADA |
发明人 |
GUEVREMONT ROGER;PURVES RANDY |
分类号 |
G01N27/64;H01J49/42;(IPC1-7):H01J49/40 |
主分类号 |
G01N27/64 |
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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