Premium
The Precursor scan. A new type of experiment in neutralization–reionization mass spectrometry
Author(s) -
Gu Ming,
Tureček František
Publication year - 1993
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210281026
Subject(s) - chemistry , reionization , mass spectrometry , radical , mass spectrum , ion , analytical chemistry (journal) , quadrupole , tandem mass spectrometry , chromatography , organic chemistry , ionization , atomic physics , physics
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. PO ˙ 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, 35 CIC ˙ , CH 3 S ˙ , CH 3 30 SiH 2 ˙ , and their precursors are discussed. Neutralization–reionization spectra of phosphorus‐containing radicals, PO ˙ , CH 3 OPH ˙ , CH 3 OPOH ˙ , ˙ P(OCH 3 ) 2 and (CH 3 O) 2 PO ˙ , are also reported.