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Characteristics of a volcano field ionization source mass spectrometer operating at 30 kV accelerating voltage
Author(s) -
Aberth William
Publication year - 1980
Publication title -
biomedical mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0306-042X
DOI - 10.1002/bms.1200070902
Subject(s) - mass spectrometry , spectrometer , ionization , ion source , analytical chemistry (journal) , ion , chemistry , atomic physics , physics , optics , chromatography , organic chemistry
A volcano field ionization source has been coupled to an E × B velocity filter type mass spectrometer. The principal advantages of this instrument are its high efficiency, measured at 10(–5) ions per molecule for toluene ( m/z 92), and long source lifetimes of over 200 h. The mass spectrometer is designed primarily to obtain mass profiles from multicomponent samples. These profiles are obtained from untreated urine and blood serum (1 μl and 0.25 μl samples), then measured between m/z 50 and 400, and are finally analyzed by computer.