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Effects of target identity and collision energy on the fragmentation of some mass‐selected protonated neuropeptides
Author(s) -
Curcuruto Ornella,
Hamdan Mahmoud
Publication year - 1993
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290071105
Subject(s) - chemistry , isobutane , fragmentation (computing) , collision , ion , protonation , collision induced dissociation , xenon , mass spectrum , argon , atomic physics , mass spectrometry , range (aeronautics) , translational energy , helium , tandem mass spectrometry , physics , organic chemistry , materials science , computer security , chromatography , composite material , computer science , catalysis , operating system
Abstract A number of protonated neuropetides formed by 10 keV Cs + ion bombardment are mass selected and their collision‐induced dissociations (CID) with helium, argon, xenon and isobutane are monitored using a collision energy of 200 eV. Data obtained by fixing the collision gas and using translational energies in the range 50–250 eV are also presented. The present data imply that optimzation of the CID spectra presented can be achieved through a judicious choice of both the target gas and the translational energy of the mass‐selected ion. The combined effect of the two experimental parameters on the relative abundances of the major sequence ions and on the loss of side‐chain moieties is discussed.