MICROCHANNEL PLATE FOR SURFACE-INDUCED DISSOCIATION IN MASS-SPECTROMETRY

被引：55

作者：

ABERTH, W

机构：

[1] University of California, Department of Pharmaceutical Chemistry, Mass Spectrometry Facility, San Francisco

来源：

ANALYTICAL CHEMISTRY | 1990年 / 62卷 / 06期

关键词：

D O I：

10.1021/ac00205a013

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new method for surface-induced dissociation of molecular ions, applied to tandem mass spectrometry, Is achieved by collisions at a grazing angle on the inside channel surfaces of a microchannel plate. This technique, termed microchannel SID, is demonstrated by using both positive and negative parent ions In the energy range of 500–2000 eV. Fragmentation spectra of the pentapeptide leucine-enkephalin (555 dations) at 500 eV show good sequence information with a net fragmentation efficiency of 14 %. High mass fragmentation is demonstrated on (CsI)23Cs+ (6113 dattons), with the resultant spectrum showing all cluster fragments from n = 0 to 23. © 1990, American Chemical Society. All rights reserved.

引用

页码：609 / 611

页数：3

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