کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1335526 | 979536 | 2007 | 7 صفحه PDF | دانلود رایگان |
The complexation of uranium(VI) with the amino acids l-glycine and l-cysteine has been investigated by time-resolved laser-induced fluorescence spectroscopy (TRLFS) and UV–Vis spectroscopy at a low pH range. The identified 1:1 and 1:2 uranyl-l-glycine complexes fluoresce and have similar absorbance properties. In contrast to the glycine system, uranyl forms two different non-fluorescent 1:1 complexes with l-cysteine, showing individual absorbance properties under the given experimental conditions. The corresponding complex formation constants were calculated using the spectroscopic data.
The complex formation of uranium(VI) with l-glycine and l-cysteine was studied at low pH values by use of time-resolved laser-induced fluorescence spectroscopy and UV–Vis spectroscopy. Differences in the fluorescence emission and UV absorption properties between free UO22+ and the several formed uranyl amino acid species were detected.Figure optionsDownload as PowerPoint slide
Journal: Polyhedron - Volume 26, Issue 1, 2 January 2007, Pages 59–65