caa a22 4500 378877097 CHVBK 20180305123423.0 cr unu---uuuuu 161128e20030201xx s 000 0 eng 10.1524/ract.91.2.81.19986 doi (NATIONALLICENCE)gruyter-10.1524/ract.91.2.81.19986 Solubility product of Pu(VI) hydrous oxide [Elektronische Daten] [Kenso Fujiwara, Hajimu Yamana, T. Fujii, Hirotake Moriyama] The solubility of Pu(VI) hydrous oxide was measured in the pHc range from 4 to 5.5 at 25±1°C in a NaClO4 solution containing O3 gas. The experiment was carried out by oversaturation and undersaturation methods at ionic strength I=0.1, 0.5 and 1.0. The concentration of Pu(VI) was measured by α-spectrometry and UV/visible spectrophotometry, and the equilibrium constant of the reaction, PuO2(OH)2=PuO22+ + 2 OH-, was obtained. From the obtained results, the solubility products (Ksp) of Pu hydrous oxide at I=0.1, 0.5 and 1.0 were determined. The experimental values were extrapolated to the standard state (I=0) by using the specific interaction theory (SIT), and the solubility product of Pu hydrous oxide was determined to be log Ksp°=-22.88±0.39. The ion interaction coefficient (PuO22+, ClO4-) was also evaluated to be 0.30±0.09. © 2003 Oldenbourg Wissenschaftsverlag GmbH Laboratory techniques, experiments nationallicence Analytical chemistry nationallicence Inorganic chemistry nationallicence Fujiwara Kenso aut Yamana Hajimu aut Fujii T. aut Moriyama Hirotake aut Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/2/2003(2003-02-01), 81-86 0033-8230 91:2/2003<81 2003 91 ract https://doi.org/10.1524/ract.91.2.81.19986 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/ract.91.2.81.19986 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fujiwara Kenso aut NATIONALLICENCE 700 1- Yamana Hajimu aut NATIONALLICENCE 700 1- Fujii T. aut NATIONALLICENCE 700 1- Moriyama Hirotake aut NATIONALLICENCE 773 0- Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/2/2003(2003-02-01), 81-86 0033-8230 91:2/2003<81 2003 91 ract CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter