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The Precursor scan. A new type of experiment in neutralization–reionization mass spectrometry

✍ Scribed by Ming Gu; František Tureček

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
787 KB
Volume
28
Category
Article
ISSN
1076-5174

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✦ Synopsis

A new scan technique utilizing the tandem quadrupole acceleration-deceleration mass spectrometer is described

The technique is based on combined monitoring of neutral and ion precursors that fragment following collisional electron transfer to give rise to a selected low-mass neutral species and its ion, respectively. P O is found to be a stable neutral species formed by dissociations of a variety of oxidized phosphorus compounds, such as di-and trialkyl phosphites, phosphates and phosphonic esters. These compounds can be selectively monitored through PO' precursor scans in multi-component mixtures. Interferences from isobaric neutral species, 3sCIC, CH,S, CH, 30SiH,', and their precursors are discussed. Neutralization-reionization spectra of phosphoruscontaining radicals, PO', CH,OPH', CH,OPOH, 'P(OCH,), and (CH,O),PO', are also reported.

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