The reaction of coumarin with the OH radical revisited: hydroxylation product analysis determined by fluorescence and chromatography

被引：245
|
作者：
Louit, G
Foley, S
Cabillic, J
Coffigny, H
Taran, F
Valleix, A
Renault, JP
Pin, S [1 ]
机构：
[1] CEA Saclay, DSM, DRECAM, SCM,URA 331,CNRS, F-91191 Gif Sur Yvette, France
[2] CEA Fontenay Aux Roses, DSVDRR, SEGG, F-92265 Fontenay Aux Roses, France
[3] CEA Saclay, DSV, DBJC, SMMCB, F-91191 Gif Sur Yvette, France
来源：
RADIATION PHYSICS AND CHEMISTRY | 2005年 / 72卷 / 2-3期
关键词：
radiolysis; hydroxyl radical; hydroxycoumarin; umbelliferone; fluorescence; reverse-phase chromatography;
D O I：
10.1016/j.radphyschem.2004.09.007
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Aqueous solutions of coumarin have been used to detect the hydroxyl radicals produced as a result of gamma a radiolysis. Reverse-phase chromatography and fluorescence measurements show that the 7-hydroxycoumarin (umbelliferone) is produced. The hydroxycoumarin isomers of 3OH-, 4OH-, 5OH-, 6OH- and 8OH-coumarin are also produced although the fluorescence emission of these products is negligible compared to that of 7-hydroxycoumarin. The radiation chemical yield of 7-hydroxycournarin has been studied in different gas conditions. (C) 2004 Elsevier Ltd. All rights reserved.
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页码：119 / 124
页数：6
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