SPRAY GLOW DISCHARGE IONIZATION METHOD AND SYSTEM

Title:

SPRAY GLOW DISCHARGE IONIZATION METHOD AND SYSTEM

Document Type and Number:

WIPO Patent Application WO/2005/036584

Kind Code:

A1

Abstract:

A spray glow discharge ionization method and system which can be used together or alternately with a main ionization method of mass spectrometry, i.e. an atmospheric chemical ionization (APCI) method or an electron spray ionization (ESI) method, while enhancing ionization efficiency using a gas exhibiting Penning effect. The spray glow discharge ionization system comprises a port (A) for supplying a fluid containing a compound to be measured, a port (B) surrounding the supply port (A) and blowing a gas exhibiting Penning effect and spraying the fluid being supplied from the supply port (A), a ground-side discharge electrode (E) provided at a port (C) generating the spray flow, and a voltage applying-side discharge electrode (F) disposed oppositely to the ground-side discharge electrode (E) in the advancing direction of the spray flow, wherein the fluid is ionized by an atomized gas (l) exhibiting Penning effect excited by the compound to be measured while being sprayed by the atomized gas (l) exhibiting Penning effect and then the fluid is subjected to mass spectrometry.

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Inventors:

SUZUKI SHIGERU (JP)

Application Number:

PCT/JP2003/014864

Publication Date:

April 21, 2005

Filing Date:

November 21, 2003

Export Citation:

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Assignee:

JAPAN SCIENCE & TECH AGENCY (JP)
NAT INST ENVIRONMENTAL STUDIES (JP)
SUZUKI SHIGERU (JP)

International Classes:

G01N27/62; H01J49/10; H01J49/16; G01N27/68; (IPC1-7): H01J49/10; G01N27/62; G01N27/68

Foreign References:

JP2002015698A	2002-01-18
JP2001093461A	2001-04-06
JPH02135655A	1990-05-24
JP2002015697A	2002-01-18
JP2004028763A	2004-01-29
JP2002517887A	2002-06-18
JPH06310091A	1994-11-04
JPS5935347A	1984-02-27
JPH11273615A	1999-10-08

Other References:

Shigeru SUZUKI et al., "Halikibutsu o Kigen to suru Kagaku Busshitsu no LC/MS Bunsekiho no Kento (1) Haikibutsu Kanren Kagaku Busshitsu Bunseki no Tame no LC/MS no Shin Ion-kaho", Dai 12 Kai Kankyo Kagaku Toronkai Yokoshu, Japan Society for Environmental Chemistry, 25 June, 2003, pages 764 - 765

Attorney, Agent or Firm:

Shimizu, Mamoru (7-10 Kanda-mitoshiro-ch, Chiyoda-ku Tokyo, JP)

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