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A study of relevant parameters in collisional‐activation of ions in the ion‐trap mass spectrometer
Author(s) -
Gronowska Janina,
Paradisi Christina,
Traldi Pietro,
Vettori Umberto
Publication year - 1990
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.1290040903
Subject(s) - chemistry , ion trap , ion , mass spectrometry , kinetic energy , argon , helium , atomic physics , ion source , analytical chemistry (journal) , hybrid mass spectrometer , quadrupole ion trap , tandem mass spectrometry , selected reaction monitoring , physics , chromatography , organic chemistry , quantum mechanics
Variously substituted aryl ketones served as models to gain insight into the collisional‐activation process in an ion‐trap mass spectrometer. The effects of different targets (helium, argon) at different pressures were examined. The investigation also involved the comparison of the results of tandem mass spectrometry experiments in the ion trap with those obtained in high‐energy collision and mass‐analysed ion kinetic energy experiments in a sector instrument. Use of argon and low helium pressures in the ion trap results in both an increase of the average internal energy of the activated ion and, presumably, a less broad energy deposition profile. The results indicate that the maximum value of internal energy achieved by an ion through multiple collisions in the ion‐trap mass spectrometer is limited by the presence of low‐energy reaction channels.