期刊
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
卷 302, 期 3, 页码 1277-1281出版社
SPRINGER
DOI: 10.1007/s10967-014-3527-x
关键词
Fluorescence; Analytical; Uranium; Phosphoric acid; Sulfuric acid; Thorium
A fluorescence based method has been developed for the determination of trace amounts of uranium in thorium matrix using a mixture of phosphoric acid (H3PO4) and sulfuric acid (H2SO4), as fluorescence enhancing reagent for uranyl (UO2 (2+)) ion fluorescence. Synthetic samples mimicking the composition of ThO2 fuel were prepared and the concentration of U(VI) was estimated. Satisfactory results are obtained when uranium is present at a concentration of 10 ppm in solid thorium samples with good precision.
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