IONIZATION APPARATUS AND METHOD FOR MASS SPECTROMETRY

Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means

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250 419SE, 250 419SB, H01j 3934

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039846920

ABSTRACT:
Ionizing gaseous substances (e.g., for mass spectral analysis) by passing the neutral gaseous substances sequentially through a chemical ionization (CI) zone and an electron impact ionization (EI) zone and impelling gaseous ions formed in one or both of the zones to a mass spectrometer. CI, EI, simultaneous EI--EI, and closely alternating CI and EI spectra are obtainable.

REFERENCES:
patent: 3231735 (1966-01-01), Peters
patent: 3405263 (1968-10-01), Wanless et al.
patent: 3505518 (1970-04-01), Mitani
patent: 3621240 (1971-11-01), Cohen et al.
patent: 3626180 (1971-12-01), Carroll et al.

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