Aqueous solutions of uranium(VI) as studied by time-resolved emission spectroscopy: a round-robin test.
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Output type: Journal article
Author list: Billard I, Ansoborlo E, Apperson K, Arpigny S, Azenha ME, Birch D, Bros P, Burrows HD, Choppin G, Couston L, Dubois V, Fanghänel T, Geipel G, Hubert S, Kim JI, Kimura T, Klenze R, Kronenberg A, Kumke M, Lagarde G, Lamarque G, Lis S, Madic C, Meinrath G, Moulin C, Nagaishi R, Parker D, Plancque G, Scherbaum F, Simoni E, Sinkov S, Viallesoubranne C.
Publisher: SAGE Publications
Publication year: 2003
Journal: Applied Spectroscopy (0003-7028)
Volume number: 57
Issue number: 8
Start page: 1027
End page: 1038
Number of pages: 12
ISSN: 0003-7028
eISSN: 1943-3530
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Open access status: green
Full text URL: https://publishup.uni-potsdam.de/files/1128/Billard2003_40.pdf
Abstract
Results of an inter-laboratory round-robin study of the application of time-resolved emission spectroscopy (TRES) to the speciation of uranium(VI) in aqueous media are presented. The round-robin study involved 13 independent laboratories, using various instrumentation and data analysis methods. Samples were prepared based on appropriate speciation diagrams and, in general, were found to be chemically stable for at least six months. Four different types of aqueous uranyl solutions were studied: (1) acidic medium where UO2(2+)aq is the single emitting species, (2) uranyl in the presence of fluoride ions, (3) uranyl in the presence of sulfate ions, and (4) uranyl in aqueous solutions at different pH, promoting the formation of hydrolyzed species. Results between the laboratories are compared in terms of the number of decay components, luminescence lifetimes, and spectral band positions. The successes and limitations of TRES in uranyl analysis and speciation in aqueous solutions are discussed.
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