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Study on the adsorption rate of Zr and Hf as homologues of element 104, Rutherfordium, on the cation-exchange resin in H$$_{2}$$SO$$_{4}$$ solutions

Ikarashi, Satoshi*; Sueki, Keisuke*; Tsukada, Kazuaki ; Nagame, Yuichiro

The adsorption rates of Zr and Hf on the cation-exchange resin in H$$_{2}$$SO$$_{4}$$ solutions were investigated in order to lead to the quantitative discussion of the chromatography. It was obtained the adsorption rates of $$^{88}$$Zr and $$^{175}$$Hf on the cation-exchange resin in 0.1 M H$$_{2}$$SO$$_{4}$$ at 15, 25 and 45$$^{circ}$$C as functions of the shaking times. The results showed that the equilibrium of cation-exchange was reached at 70$$sim$$80 seconds and that the adsorption rates on the cation-exchange resin were not changed between 15$$sim$$45$$^{circ}$$C in the present condition. In H$$_{2}$$SO$$_{4}$$/HNO$$_{3}$$ mixed solution ([H$$^{+}$$]$$_{eq}$$ = 1.0 M), the adsorption rate was similar to those of $$^{88}$$Zr and $$^{175}$$Hf on the cation-exchange resin in H$$_{2}$$SO$$_{4}$$ solution.

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