THE ROLE OF MATRIX IN FAST-ATOM-BOMBARDMENT DESORPTION OF CHLOROPHYLL

被引：5

作者：

GRESE, RP ^{[1
]}

GROSS, ML ^{[1
]}

机构：

[1] UNIV NEBRASKA,MIDWEST CTR MASS SPECTROMETRY,DEPT CHEM,LINCOLN,NE 68588

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES | 1992年 / 122卷

基金：

美国国家科学基金会;

关键词：

CHLOROPHYLL; FAB; MATRIX EFFECTS;

D O I：

10.1016/0168-1176(92)87007-2

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 fast atom bombardment (FAB) desorbed chlorophyll molecular ions are formed with less internal energy and undergo less fragmentation than those desorbed from thin films. This may be due to the effect of the FAB matrix, which modifies the strong aggregation of chlorophyll molecules in the solid phase. Two other approaches for disrupting chlorophyll aggregation are doping the sample with an alkali salt, or extruding the Mg atom to give the corresponding pheophytin. Reactions of chlorophyll with the FAB matrix, however, are problematic for accurately determining purity of chlorophyll samples.

引用

页码：51 / 65

页数：15

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