Anomalous solvent extraction behavior of astatine |
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| Authors: | N Takahashi H Baba |
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| Institution: | (1) Institut für Kernchemie, Universität Mainz, D-55099 Mainz, Germany;(2) Department of Chemistry and Laboratory of Nuclear Studies, Graduate School of Science, Osaka University, Toyonaka, 560 Osaka, Japan |
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| Abstract: | We studied the solvent extraction behavior of astatine and found the anomalous behavior of this element similar to radioiodine. Astatine was extracted into CS2 from acidic solution over a wide range of carrier iodine concentration. The distribution ratios of astatine were determined by measuring the  -ray from 210 At with a Nal(TI) detector. A drastic change was observed around at 10–4 mol/l as in the case of 131 I. This tendency is well explained by the kinematics of the chemical reactions concemed. |
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