کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9770477 | 1501949 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Identification of paramagnetic radicals in γ-irradiated natural diatomite minerals by electron paramagnetic resonance
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, gamma-irradiated natural diatomite minerals were investigated by electron paramagnetic resonance (EPR) spectroscopy at ambient temperature. The paramagnetic radicals produced by γ-irradiation in natural diatomite minerals at ambient temperature were attributed to CËH3,PËO42-, CËO2â, organic (probably, humic or fluvic acid), SËO2â and SËO3â free radicals. These centers were found to be perfectly observable at below 20 mW microwave power. The g values of all the paramagnetic centers were obtained, and some of their a values were reported. The results were found to be consistent with the existing literature data and theoretical predictions for similar paramagnetic centers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 733, Issues 1â3, 3 January 2005, Pages 151-154
Journal: Journal of Molecular Structure - Volume 733, Issues 1â3, 3 January 2005, Pages 151-154
نویسندگان
R. Köseoglu, F. Köksal, E. Ãiftci, M. Akkurt,