caa a22 4500 378867520 CHVBK 20180305123401.0 cr unu---uuuuu 161128e20030401xx s 000 0 eng 10.1524/ract.91.4.211.19968 doi (NATIONALLICENCE)gruyter-10.1524/ract.91.4.211.19968 Chemistry of rhenium as an analogue of technetium: Experimental studies of the dissolution of rhenium oxides in aqueous solutions [Elektronische Daten] [E. Kim, J. Boulègue] The migration of fissiogenic Tc into the environment can be predicted by studying the dissolution behavior of Re, a chemical analogue of Tc, avoiding the use of a radioactive element at high concentration. We developed a series of experimental studies of the solubility of Re oxides under various oxidation states (+VII, +IV, and +III), in oxidizing and anoxic media, so as to verify the validity of the available thermodynamic data concerning Re. The experimental results confirm that the predictable solubility of Re, under the conditions found in radioactive wastes storage, is very high when in the form of {ReO4-}, an analogue of {TcO4-}. The Re(III) oxide, Re2O3, is not stable in aqueous solutions and therefore the existence of Re(III) in surface conditions is not much likely. The Re(IV) oxide, ReO2, is weakly soluble. Its solubility is in the range 4×10-7-10-6mol L-1, which suggests that Re(IV) can be found in noticeable concentrations in aqueous solutions even in anoxic media; similar result is expected for Tc. © 2003 Oldenbourg Wissenschaftsverlag GmbH Laboratory techniques, experiments nationallicence Analytical chemistry nationallicence Inorganic chemistry nationallicence Kim E. aut Boulègue J. aut Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/4/2003(2003-04-01), 211-216 0033-8230 91:4/2003<211 2003 91 ract https://doi.org/10.1524/ract.91.4.211.19968 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/ract.91.4.211.19968 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim E. aut NATIONALLICENCE 700 1- Boulègue J. aut NATIONALLICENCE 773 0- Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/4/2003(2003-04-01), 211-216 0033-8230 91:4/2003<211 2003 91 ract CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter