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Fluorimetric estimation of U(VI) in the presence of a large excess of Th(IV)

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Abstract

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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Authors and Affiliations

  1. Analytical Chemistry and Spectroscopy Section, Materials Chemistry Division,Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, India

    S. Maji, Satendra Kumar & K. Sankaran

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  1. S. Maji
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  2. Satendra Kumar
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  3. K. Sankaran
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Correspondence to K. Sankaran.

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Maji, S., Kumar, S. & Sankaran, K. Fluorimetric estimation of U(VI) in the presence of a large excess of Th(IV). J Radioanal Nucl Chem 302, 1277–1281 (2014). https://doi.org/10.1007/s10967-014-3527-x

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  • DOI: https://doi.org/10.1007/s10967-014-3527-x

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