کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1237433 | 968893 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Time resolved fluorescence spectroscopy of Eu(III) complexation with α-hydroxy isobutyric acid
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Complexation of Eu(III) with α-hydroxy isobutyric acid (HIBA), a model compound of humic acid, has been studied by time resolved fluorescence spectroscopy. The ratio of fluorescence intensity of the two peaks at 616 and 592 nm (I616/592) was found to increase with increasing ligand to metal ratio. The I616/592 data was used to deduce the stability constant of Eu–HIBA complexes of the type MLi (i = 1–3). The formation of multiple ligand complexes was also corroborated by lifetime data which was found to increase with increasing [HIBA]/[Eu] ratio thus indicating replacement of coordinated water molecules by HIBA.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 71, Issue 3, 1 December 2008, Pages 1007–1010
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 71, Issue 3, 1 December 2008, Pages 1007–1010
نویسندگان
A. Jain, M. Mohapatra, S.V. Godbole, B.S. Tomar,