HIGH-RESOLUTION ION ISOLATION WITH THE ION-CYCLOTRON RESONANCE CAPACITIVELY COUPLED OPEN CELL

被引:31
作者
OCONNOR, PB [1 ]
MCLAFFERTY, FW [1 ]
机构
[1] CORNELL UNIV,DEPT CHEM,BAKER LAB CHEM,ITHACA,NY 14853
关键词
D O I
10.1016/1044-0305(95)00232-3
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
For ion cyclotron resonance, a capacitively coupled open cell variant with fourfold radial symmetry was constructed and tested for axial excitation-ejection of large ions at high resolution. With a reverse of frequency sweep direction, this cell gave substantial improvements in signal-to-noise ratio due to linearization of the excitation electric field. Single isotopic peaks of ubiquitin (8.6-kDa) and carbonic anhydrase (29-kDa) molecular ions could be isolated by selective stored waveform inverse Fourier transform excitation, which yielded an order of magnitude higher isolation resolving power than previously achieved at high mass-to-charge ratio values.
引用
收藏
页码:533 / 535
页数:3
相关论文
共 28 条
[21]   RELATION OF SIGNAL SENSITIVITY AND ION Z-MOTION IN CUBIC CELLS THEORY AND IMPLICATION FOR ION KINETIC-STUDIES [J].
REMPEL, DL ;
HUANG, SK ;
GROSS, ML .
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, 1986, 70 (02) :163-184
[22]   EXCITATION MODES FOR FOURIER TRANSFORM-ION CYCLOTRON-RESONANCE MASS-SPECTROMETRY [J].
SCHWEIKHARD, L ;
MARSHALL, AG .
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 1993, 4 (06) :433-452
[23]   DETERMINATION OF MONOISOTOPIC MASSES AND ION POPULATIONS FOR LARGE BIOMOLECULES FROM RESOLVED ISOTOPIC DISTRIBUTIONS [J].
SENKO, MW ;
BEU, SC ;
MCLAFFERTY, FW .
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 1995, 6 (04) :229-233
[24]   REMEASUREMENT OF IONS USING QUADRUPOLAR EXCITATION FOURIER-TRANSFORM ION-CYCLOTRON RESONANCE SPECTROMETRY [J].
SPEIR, JP ;
GORMAN, GS ;
PITSENBERGER, CC ;
TURNER, CA ;
WANG, PP ;
AMSTER, IJ .
ANALYTICAL CHEMISTRY, 1993, 65 (13) :1746-1752
[25]  
SPEIR JP, 1995, J MASS SPECTROM, V1, P39
[26]   COLLISIONAL ACTIVATION MASS-SPECTRA OF IONS CONTAINING POLYISOTOPIC ELEMENTS [J].
TODD, PJ ;
BARBALAS, MP ;
MCLAFFERTY, FW .
ORGANIC MASS SPECTROMETRY, 1982, 17 (02) :79-80
[27]   ELIMINATION OF Z-EJECTION IN FOURIER-TRANSFORM ION-CYCLOTRON RESONANCE MASS-SPECTROMETRY BY RADIO-FREQUENCY ELECTRIC-FIELD SHIMMING [J].
WANG, MD ;
MARSHALL, AG .
ANALYTICAL CHEMISTRY, 1990, 62 (05) :515-520
[28]   SIMULATED ION TRAJECTORY AND INDUCED SIGNAL IN ION-CYCLOTRON RESONANCE ION TRAPS - EFFECT OF ION INITIAL AXIAL POSITION ON ION COHERENCE, INDUCED SIGNAL, AND RADIAL OR Z-EJECTION IN A CUBIC TRAP [J].
XIANG, XZ ;
MARSHALL, AG .
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 1994, 5 (09) :807-813