کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9876351 | 1533549 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The reaction of coumarin with the OH radical revisited: hydroxylation product analysis determined by fluorescence and chromatography
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Aqueous solutions of coumarin have been used to detect the hydroxyl radicals produced as a result of gamma 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-hydroxycoumarin has been studied in different gas conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 72, Issues 2â3, February 2005, Pages 119-124
Journal: Radiation Physics and Chemistry - Volume 72, Issues 2â3, February 2005, Pages 119-124
نویسندگان
Guillaume Louit, Sarah Foley, Julie Cabillic, Hervé Coffigny, Frédéric Taran, Alain Valleix, Jean Philippe Renault, Serge Pin,