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Title:
質量分析計用の高速組合せマルチモードイオン源
Document Type and Number:
Japanese Patent JP2005528746
Kind Code:
A
Abstract:
The present invention combines ionization modes produced by, for example, electrospray (ESI), atmospheric pressure chemical ionization (APCI), and thermospray for analysis of molecules. Specifically, this invention relates to the creation of a new source apparatus combining APCI and ESI which will interface with existing mass spectrometers, as well as the creation of new mass spectrometers where the present invention would be the ionization source. Furthermore, the present invention relates to an ionization source for a mass spectrometer which features an ion chamber defining an ion path, an electrospray probe for ionizing a sample using electrospray ionization, a corona discharge needle for ionizing a sample using atmospheric pressure chemical ionization, a power supply for applying an electrical potential to one of said electrospray probe and said corona discharge needle, and a solid state switch for directing the electrical potential from the power supply to one of the electrospray probe and said corona discharge needle.

Inventors:
Barrow, Michael Pee
Application Number:
JP2004509375A
Publication Date:
September 22, 2005
Filing Date:
May 30, 2003
Export Citation:
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Assignee:
Waters Investments Limited
International Classes:
G01N27/62; G01N27/26; H01J49/04; H01J49/10; H01J49/14; G01N; (IPC1-7): H01J49/10; G01N27/62; H01J49/04
Domestic Patent References:
JPH0773848A1995-03-17
JPH07307139A1995-11-21
JP2000227417A2000-08-15
JPS5621096B21981-05-18
JPH04109160A1992-04-10
JPH08236064A1996-09-13
JPH09178705A1997-07-11
JP2002157971A2002-05-31
Attorney, Agent or Firm:
Yoshio Kawaguchi
Akio Ichiiri
Makoto Ono
Osaki Katsuma
Mitsuaki Tsubokura