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Characterization by three‐dimensional representation of sequential transitions of metastable ions in a double focusing mass spectrometer
Author(s) -
Lacey M. J.,
Macdonald C. G.
Publication year - 1978
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.1210130511
Subject(s) - ion , metastability , kinetic energy , mass spectrometry , toluene , electric field , atomic physics , detector , spectrometer , chemistry , magnetic field , analytical chemistry (journal) , physics , optics , chromatography , organic chemistry , quantum mechanics
The ion currents due to products of selected ion reactions of toluene and 3‐chlorophenol, occurring in the source or flight tube of a double focusing mass spectrometer for which the electric sector precedes the magnetic sector, have been represented by plotting them against two variables that reflect independently the effects of the sectors. The daughter ion produced from the molecular ion of 3‐chlorophenol that decays by sequential losses of CO in the field free region preceding the electric sector and Cl˙ in the field free region preceding the magnetic sector gives rise to a peak with a distinctive shape on the resultant three‐dimensional surface. A peak due to the daughter ion arising from the corresponding sequential losses of H˙ and C 2 H 2 from the molecular ion of toluene could not be detected. A portion of the ion kinetic energy spectrum which would be recorded by a detector at the energy resolving slit is derived from the surface for 3‐chlorophenol and is in satisfactory agreement with a published spectrum.