Anion- and cation-exchange studies of Zr, Hf, and Th using ion-exchange resin and fiber in H.sub.2SO.sub.4 media for chemical characterization of sulfate complex of Rf

To investigate sulfate complex formation of Rf, we performed batch-wise ion-exchange experiments of its homologues Zr and Hf and its pseudo homologue Th in H.sub.2SO.sub.4 using anion- and cation-exchange resins and fibers. From the time dependence of the distribution ratios, it was found that the anion-exchange resin is applicable for the experiments with the .sup.261Rf.sup.a. To obtain the comparison data for Rf, we investigated the distribution coefficients of Zr, Hf, and Th in 0.06-1 M H.sub.2SO.sub.4. From these results, we propose the anion-exchange experiments of Rf with the resin in 0.1-0.7 M H.sub.2SO.sub.4 using the extraction apparatus (AMBER).