发明名称 |
Ion source and mass spectrometric apparatus |
摘要 |
A mass spectrometric apparatus of high sensitivity, including a spray ionization interface suitable for the ionization of a low flow-rate liquid that prevents charged particles from being introduced into a vacuum device; wherein the ion source comprises a capillary having a first end having an inner diameter that gradually reduces in size in the direction of gas flow and wherein a liquid sample is introduced into an opposite second end of the capillary; a gas guide tube which guides gas flow along an outer periphery of the first end the capillary and which sprays the liquid sample from the first end of the capillary; and a gas introducing section for introducing the gas into the gas guide tube. A first end of the gas guide tube has a reduced inside diameter and receives the first end of the capillary in a holding member. Gaseous ions produced are introduced into a vacuum section through an ion intake port and are subjected to mass separation by a mass spectrometer. The angle between the central axis of the capillary and that of the ion intake port is greater than about 15°.
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申请公布号 |
US2003209666(A1) |
申请公布日期 |
2003.11.13 |
申请号 |
US20020323900 |
申请日期 |
2002.12.20 |
申请人 |
HITACHI, LTD. |
发明人 |
HIRABAYASHI ATSUMU;HASHIMOTO YUICHIRO;HASEGAWA HIDEKI |
分类号 |
G01N27/62;H01J49/00;H01J49/04;H01J49/10;(IPC1-7):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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