A STUDY OF RELEVANT PARAMETERS IN COLLISIONAL-ACTIVATION OF IONS IN THE ION-TRAP MASS-SPECTROMETER

被引：68

作者：

GRONOWSKA, J ^{[1
]}

PARADISI, C ^{[1
]}

TRALDI, P ^{[1
]}

VETTORI, U ^{[1
]}

机构：

[1] CTR STUDIO STABIL & REATTIVITA COMPOSTI COORDINAZ,DIPARTIMENTO CHIM ANALIT,VIA MARZOLO 1,I-35131 PADUA,ITALY

来源：

RAPID COMMUNICATIONS IN MASS SPECTROMETRY | 1990年 / 4卷 / 09期

关键词：

D O I：

10.1002/rcm.1290040903

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

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. Copyright © 1990 John Wiley & Sons Limited

引用

页码：306 / 313

页数：8

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