HIGH-EFFICIENCY PHOTOINDUCED DISSOCIATION OF PRECURSOR IONS IN A TANDEM TIME-OF-FLIGHT MASS-SPECTROMETER

被引：20

作者：

SEETERLIN, MA ^{[1
]}

VLASAK, PR ^{[1
]}

BEUSSMAN, DJ ^{[1
]}

MCLANE, RD ^{[1
]}

ENKE, CG ^{[1
]}

机构：

[1] MICHIGAN STATE UNIV,DEPT CHEM,E LANSING,MI 48824

来源：

JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY | 1993年 / 4卷 / 09期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1016/1044-0305(93)80055-4

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

High efficiency photo-induced dissociation (PID) has been demonstrated in a tandem time-of-flight mass spectrometer. This instrument focuses isomass ion packets to temporal and spatial dimensions similar to those of the focused laser pulses from a high power excimer laser. This high density overlap of photons and ions yields highly efficient fragmentation and also provides high resolution selection of specific precursor ion mass-to-charge ratio values. Using 193 nm photon excitation of the molecular ion of bromobenzene (m/z = 156), fragmentation, collection, and PID efficiencies of 79%, 132%, and 104%, respectively, were obtained. Characteristic fragmentations of toluene, nitrobenzene, acetophenone, triethylamine, N,N-diethylformamide, N-methylacetamide, and cyclohexene have also been demonstrated.

引用

页码：751 / 754

页数：4

共 12 条

[1] CONSECUTIVE LASER-INDUCED PHOTODISSOCIATION AS A PROBE OF ION STRUCTURE [J].