EFFECTS OF MATRIX VISCOSITY ON FAB SPECTRA

被引：24
作者：
SHIEA, JT
SUNNER, J
机构：
[1] Department of Chemistry, Montana State University, Bozeman
来源：
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES | 1990年 / 96卷 / 03期
关键词：
D O I：
10.1016/0168-1176(90)85126-M
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The influence on fast atom bombardment (FAB) spectra of the viscosity of the matrix was studied. The viscosity was varied in two different ways: (1) by changing the matrix temperature and (2) by adding glucose to the matrix. With both methods the viscosity was varied in the 103 to 106 centiPoise range. It was found that the spectra degraded severely with increasing viscosity and that the extent of degradation was similar with the two methods. It is concluded that the temperature, per se, has only a small influence on FAB spectra. The very strong dependence on viscosity is explained as a result of changes in the transport processes at the liquid-vacuum interface and of a gradual shift in the desorption mechanism. © 1990.
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页码：243 / 265
页数：23
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