Atmospheric pressure ionization mass spectrometry with laser-produced ions
作者： Leonidas. Kolaitis , David M. Lubman
DOI: 10.1021/AC00122A017
关键词: Ambient ionization 、 Ionization 、 Electron ionization 、 Mass spectrometry 、 Analytical chemistry 、 Chemistry 、 Thermal ionization 、 Atmospheric-pressure laser ionization 、 Chemical ionization 、 Atomic physics 、 Ion source
摘要: In this work laser ionization at atmospheric pressure has been characterized as an source for mass analyzed ion mobility measurements. Laser explored in different gases including N/sub 2/, air, Ar, P-10, and CO/sub 2/ the resulting mobilities have compared. Further, via Ni..beta.. these IMS studied results were compared to ionization. each case ions produced are injected into a quadrupole spectrometer analyzed. The authors found that almost every example molecular (M/sup +/) or MH/sup +/ is formed with no fragmentation from Ni ..beta.. source. addition K/sub o/ value of species generally change function ..cap alpha.., polarizability, except drift gas where large clusters form around organic ionic core.
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