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A. Kronenberg, P. K. Mohapatra, Jens Volker Kratz, G. Pfrepper, R. Pfrepper

Anion-exchange behavior of Mo and W as homologs of Sg (element 106) in HCl and HNO₃ as well as in mixed HCl-HF and HNO₃-HF solutions

We have determined K_d values for Mo and W in batch experiments on various anion-exchange resins in HCl and HNO₃ as well as in mixed HCl-HF and HNO₃-HF solutions in order to create a data base and to select optimum conditions for the determination of K_d values of Sg (element 106) in a future on-line experiment using continuous chromatography with the multi-column technique (MCT). Their influence by hydrolysis and fluoride complexation is discussed and the average charge of the complexes is determined from slope analyses. It is shown that the selectivity of anion exchangers for the Mo- and W complexes and, thus, the separation factors between them, depend strongly on the choice of the functional group of the anion-exchange resin.

Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Print ISSN: 0033-8230
Volume: 92, 07/2004
Pages: 395 - 403

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