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

被引：253

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.

引用

页码：119 / 124

页数：6

共 20 条

[1] Substituent effects in the reaction of OH radicals with aromatics: Toluene [J].