Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Li, Z.*; Toyoshima, Atsushi; Asai, Masato; Tsukada, Kazuaki; Sato, Tetsuya; Sato, Nozomi; Kikuchi, Takahiro; Nagame, Yuichiro; Schdel, M.; Pershina, V.*; et al.
Radiochimica Acta, 100(3), p.157 - 164, 2012/03
Times Cited Count:13 Percentile:69.01(Chemistry, Inorganic & Nuclear)Li, Z.; Toyoshima, Atsushi; Asai, Masato; Tsukada, Kazuaki; Sato, Tetsuya; Sato, Nozomi; Kikuchi, Takahiro; Schdel, M.*; Nagame, Yuichiro; Liang, X. H.*; et al.
no journal, ,
Cation-exchange behavior of Rf (T = 78 s) produced in the Cm(O, 5n) reaction was studied on a "one-atom-at-a-time" scale in HSO (0.15-0.69 M)/HNO mixed solutions ([H] = 1.0 M) using an automated ion-exchange separation apparatus coupled with the detection system for alpha-spectroscopy. It was found that adsorption probability (%ads) of Rf on cation-exchange resin decreases with increasing [HSO], showing a successive formation of its sulfate complexes. Rf exhibited much weaker formation of the complexes than the lighter homologues Zr and Hf, which is qualitatively in good agreement with theoretical calculations including relativistic effects.
Ikarashi, Satoshi*; Sueki, Keisuke*; Tsukada, Kazuaki; Nagame, Yuichiro
no journal, ,
The adsorption rates of Zr and Hf on the cation-exchange resin in HSO solutions were investigated in order to lead to the quantitative discussion of the chromatography. It was obtained the adsorption rates of Zr and Hf on the cation-exchange resin in 0.1 M HSO at 15, 25 and 45C as functions of the shaking times. The results showed that the equilibrium of cation-exchange was reached at 7080 seconds and that the adsorption rates on the cation-exchange resin were not changed between 1545C in the present condition. In HSO/HNO mixed solution ([H] = 1.0 M), the adsorption rate was similar to those of Zr and Hf on the cation-exchange resin in HSO solution.
Li, Z.; Toyoshima, Atsushi; Asai, Masato; Tsukada, Kazuaki; Sato, Tetsuya; Sato, Nozomi; Schdel, M.*; Nagame, Yuichiro; Liang, X. H.*; Kasamatsu, Yoshitaka*; et al.
no journal, ,
Cation-exchange behavior of Rf (T = 78 s) produced in the Cm(O,5n) reaction was studied on a "one-atom-at-a-time" scale in 0.15-0.69 M HSO/HNO mixed solutions ([H] = 1.0 M) using an automated ion-exchange separation apparatus coupled with a detection system for alpha-spectroscopy (AIDA). It was found that adsorption probabilities (%ads) of Rf on the cation-exchange resin decrease with increasing [HSO], showing successive formation of Rf sulfate complexes. Rf exhibits a weaker complex formation than the lighter homologues Zr and Hf.
Ikarashi, Satoshi*; Sueki, Keisuke*; Li, Z.*; Tsukada, Kazuaki; Nagame, Yuichiro
no journal, ,
To study ion-exchange kinetics on the diffusion processes of Rf and its homologues, Zr and Hf, with the cation-exchange resin in HSO solutions, we obtained the fractional attainment of equilibrium of the carrier-free radiotracers Zr and Hf adsorbed on the cation-exchange resin as a function of contact time within 300 seconds by the batch experiment. We discussed the dependence of functions of the fractional attainment of equilibrium on temperatures, concentrations of HSO- and radii of resins. It is result that the good agreement between experimental data and theoretical curves which the film diffusion control is the rate-determining step in the present ion-exchange process.