caa a22 4500 378847252 CHVBK 20180305123314.0 cr unu---uuuuu 161128e20030601xx s 000 0 eng 10.1524/ract.91.6.319.20022 doi (NATIONALLICENCE)gruyter-10.1524/ract.91.6.319.20022 Uranium speciation in plants [Elektronische Daten] [A. Günther, G. Bernhard, G. Geipel, T. Reich, A. Roßberg, H. Nitsche] Detailed knowledge of the nature of uranium complexes formed after the uptake by plants is an essential prerequisite to describe the migration behavior of uranium in the environment. This study focuses on the determination of uranium speciation after uptake of uranium by lupine plants. For the first time, time-resolved laser-induced fluorescence spectroscopy and X-ray absorption spectroscopy were used to determine the chemical speciation of uranium in plants. Differences were detected between the uranium speciation in the initial solution (hydroponic solution and pore water of soil) and inside the lupine plants. The oxidation state of uranium did not change and remained hexavalent after it was taken up by the lupine plants. The chemical speciation of uranium was identical in the roots, shoot axis, and leaves and was independent of the uranium speciation in the uptake solution. The results indicate that the uranium is predominantly bound as uranyl(VI) phosphate to the phosphoryl groups. Dandelions and lamb´s lettuce showed uranium speciation identical to lupine plants. © 2003 Oldenbourg Wissenschaftsverlag GmbH Laboratory techniques, experiments nationallicence Analytical chemistry nationallicence Inorganic chemistry nationallicence Günther A. aut Bernhard G. aut Geipel G. aut Reich T. aut Roßberg A. aut Nitsche H. aut Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/6/2003(2003-06-01), 319-328 0033-8230 91:6/2003<319 2003 91 ract https://doi.org/10.1524/ract.91.6.319.20022 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/ract.91.6.319.20022 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Günther A. aut NATIONALLICENCE 700 1- Bernhard G. aut NATIONALLICENCE 700 1- Geipel G. aut NATIONALLICENCE 700 1- Reich T. aut NATIONALLICENCE 700 1- Roßberg A. aut NATIONALLICENCE 700 1- Nitsche H. aut NATIONALLICENCE 773 0- Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/6/2003(2003-06-01), 319-328 0033-8230 91:6/2003<319 2003 91 ract CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter