Anion-exchange Behavior of Nb, Ta, and Pa as Homologues of Db in HF/HNO_3 Solutions
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To find suitable conditions for the experimental study of anion-exchange behavior of element 105, dubnium (Db), we have investigated anion-exchange behavior of the group-5 elements Nb, Ta, and their pseudo homologue Pa in HF/HNO<SUB>3</SUB> media by a batch method using radiotracers of <SUP>95</SUP>Nb, <SUP>179</SUP>Ta, and <SUP>233</SUP>Pa. Clearly different adsorption behavior was observed among those homologues in the fluoride ion concentrations of 1 × 10<SUP>-6</SUP> M < [F<SUP>-</SUP>] < 2 × 10<SUP>-2</SUP> M, suggesting that each element forms different anionic complexes. Based on the observed distribution coefficients of these elements, we propose appropriate experimental conditions to investigate fluoride complexation of Db.
- Journal of Nuclear and Radiochemical Sciences
Journal of Nuclear and Radiochemical Sciences 8(2), 69-72, 2007-12-01
The Japan Society of Nuclear and Radiochemical Sciences