High-mass ion fragmentation as a function of time and mass.
High-mass ion fragmentation as a function of time and mass.
复制标题
高质量离子碎裂作为时间和质量的函数。
DOI:
10.1021/ac00142a012
复制
发表时间:
1987
影响因子:
7.4
通讯作者:
Cotter,RJ
中科院分区:
文献类型:
--
作者:
Demirev,P;Olthoff,JK;Fenselau,C;Cotter,RJ
The effects of molecular weight and Ion lifetimes on the extent of fragmentation observed In mass spectra of compounds In the mass range 500-5800 have been studied. Fragmentation of large Ions over long periods of time can be observed as coherent peaks In tlme-of-flight spectra when delayed Ion extraction techniques are employed. The Implications for the design of future high-mass Instruments are discussed.Several recent developments in mass spectrometry have expanded considerably the range of (bio) organiccompounds accessible for study. The introduction of new techniques for ionization of involatile and thermally labile compounds, eg plasma desorption (PD)(1), fast (keV) atom (ion) bombardment (FAB)(2), and laser desorption (LD)(3), have allowed generation of gas-phase ions with masses as high as 23000 daltons. In turn, this progress in desorption has stimulated development of mass analyzer and detector systems capable of handling ionsabove 3000 daltons (4, 5). Initial studies by mass spectroscopists in the mass range above 3000 daltons have indicated that some of the concepts evolved historically for the mass range below 1000 have to be reexaminedfor the higher mass range.
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DOI:
--
发表时间:
1983
期刊:
影响因子:
--
作者:
B. Chait
通讯作者:
B. Chait
影响因子:
7.4
作者:
W. Windig;H. Meuzelaar
通讯作者:
H. Meuzelaar
影响因子:
2.9
作者:
G. Charnock;James L. Loo
通讯作者:
James L. Loo
影响因子:
2.3
作者:
M. Barber;R. Bordoli;R. Sedgwick;A. Tyler
通讯作者:
A. Tyler
影响因子:
7.4
作者:
R. Cotter;B. Larsen;D. Heller;J. Campana;C. Fenselau
通讯作者:
C. Fenselau