Mass chromatography

A mass spectrometer has an atmospheric pressure chemical ionization source that includes a first ionization portion (3) including a needle electrode (10), for generating a primary ion by discharge of the needle electrode a primary ion introduction aperture (14), and a second ionization portion (5) i...

Full description

Saved in:
Bibliographic Details
Main Authors WAKI, IZUMI, YAMADA, MASUYOSHI, KASIMA, HIDEO
Format Patent
LanguageEnglish
French
German
Published 22.03.2006
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
Online AccessGet full text

Cover

More Information
Summary:A mass spectrometer has an atmospheric pressure chemical ionization source that includes a first ionization portion (3) including a needle electrode (10), for generating a primary ion by discharge of the needle electrode a primary ion introduction aperture (14), and a second ionization portion (5) including an introduction aperture (11), for generating a sample ion by the reaction between the primary ion and the sample gas introduced from an end (12) of a column (9) of gas chromatography, a sample ion movement aperture (8); and a mass analysis portion (15); wherein the end is arranged at a position satisfying the relation r ‰¦ 2R where R is a radius of an inner diameter of the aperture (11) and r is a distance between an axis connecting the center of the aperture and the center of the aperture (8), and the end.
Bibliography:Application Number: EP20050004827