TY  - GEN
A1  - Billard, Isabelle
A1  - Ansoborlo, Eric
A1  - Apperson, Kathleen
A1  - Arpigny, Sylvie
A1  - Azenha, M. Emilia
A1  - Birch, David
A1  - Bros, Pascal
A1  - Burrows, Hugh D.
A1  - Choppin, Gregory
A1  - Kumke, Michael Uwe
T1  - Aqueous solutions of Uranium(VI) as studied by time-resolved emission spectroscopy : a Round-Robin Test
N2  - 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 UO22+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.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 005 
KW  - uranium (VI)
KW  - intercomparison
KW  - speciation
Y1  - 2007
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/1128
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:517-opus-12318
ER  -