MASS SHIFTS DUE TO ION-ION INTERACTIONS IN A QUADRUPOLE ION-TRAP MASS-SPECTROMETER

被引:32
作者
CLEVEN, CD
COX, KA
COOKS, RG
BIER, ME
机构
[1] PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907
[2] FINNIGAN MAT CORP,SAN JOSE,CA 95134
关键词
D O I
10.1002/rcm.1290080604
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Mass spectra recorded using a Paul ion trap, operated in the mass-selective instability scan mode, give peak positions which are shown to depend on ion abundance. The isolated molecular ions of benzene, anisole, cresol, and n-butylbenzene are ejected during the mass selective instability scan at times which display a linear dependence on ion abundance for low populations of trapped ions. Remarkably, the degree to which the peaks are shifted is also compound dependent. Mass shifts are also influenced by the presence of other ions in the trap and this effect is amplified as the mass difference between the analyte and matrix ions decreases. Mass shifts are also affected by the helium pressure which controls the ion density. Extrapolation to zero ion abundance and to zero helium pressure is suggested as a method of eliminating these effects and hence of improving the mass measurement accuracy attainable using the ion trap.
引用
收藏
页码:451 / 454
页数:4
相关论文
共 29 条
[1]   ESTIMATION OF THE POLARIZABILITY OF GASEOUS-IONS BY ION-TRAP MASS MEASUREMENTS [J].
BORTOLINI, O ;
CATINELLA, S ;
TRALDI, P .
ORGANIC MASS SPECTROMETRY, 1993, 28 (04) :428-432
[2]  
COOKS RG, 1991, MASS SPECTROM, V5, P83
[3]  
CREASER CS, COMMUNICATION
[4]   DIE DREIDIMENSIONALE STABILISIERUNG VON LADUNGSTRAGERN IN EINEM VIERPOLFELD [J].
FISCHER, E .
ZEITSCHRIFT FUR PHYSIK, 1959, 156 (01) :1-26
[5]   EQUILIBRIUM SPACE-CHARGE DISTRIBUTION IN A QUADRUPOLE ION-TRAP [J].
GUAN, SH ;
MARSHALL, AG .
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 1994, 5 (02) :64-71
[6]   LASER DESORPTION FROM A PROBE IN THE CAVITY OF A QUADRUPOLE ION STORAGE MASS-SPECTROMETER [J].
HELLER, DN ;
LYS, I ;
COTTER, RJ ;
UY, OM .
ANALYTICAL CHEMISTRY, 1989, 61 (10) :1083-1086
[7]   TANDEM-IN-SPACE AND TANDEM-IN-TIME MASS-SPECTROMETRY - TRIPLE QUADRUPOLES AND QUADRUPOLE ION TRAPS [J].
JOHNSON, JV ;
YOST, RA ;
KELLEY, PE ;
BRADFORD, DC .
ANALYTICAL CHEMISTRY, 1990, 62 (20) :2162-2172
[8]   LARGE-SCALE SIMULATION OF MASS-SPECTRA RECORDED WITH A QUADRUPOLE ION TRAP MASS-SPECTROMETER [J].
JULIAN, RK ;
REISER, HP ;
COOKS, RG .
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, 1993, 123 (02) :85-96
[9]  
JULIAN RK, 1903, THESIS PURDUE U US
[10]   THERMOSPRAY LIQUID-CHROMATOGRAPHY MASS-SPECTROMETRY WITH A QUADRUPOLE ION TRAP MASS-SPECTROMETER [J].
KAISER, RE ;
WILLIAMS, JD ;
LAMMERT, SA ;
COOKS, RG ;
ZAKETT, D .
JOURNAL OF CHROMATOGRAPHY-BIOMEDICAL APPLICATIONS, 1991, 562 (1-2) :3-11