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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Editor-in-Chief: Qaim, Syed M.

12 Issues per year


IMPACT FACTOR 2017: 1.202

CiteScore 2017: 1.22

SCImago Journal Rank (SJR) 2017: 0.409
Source Normalized Impact per Paper (SNIP) 2017: 0.869

Online
ISSN
2193-3405
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Volume 92, Issue 7

Issues

On-line anion exchange of rutherfordium in HF/HNO3 and HF solutions

A. Kronenberg / K. Eberhardt / Jens Volker Kratz / P. K. Mohapatra / A. Nähler / P. Thörle / W. Brüchle / M. Schädel / A. Türler
Published Online: 2009-09-25 | DOI: https://doi.org/10.1524/ract.92.7.379.35753

Summary

The fluoride complexation of the group-4 elements Zr, Hf, and Rf, and of the pseudo-homolog Th, was previously investigated in mixed HNO3/HF solutions by studying Kd values on both cation-exchange resins (CIX) and anion-exchange resins (AIX) using the automated rapid chemistry apparatus ARCA. On the CIX, the fluoride complexation of Rf was found to be weaker than that of Zr and Hf but stronger than that of Th. On the AIX, the competition for the binding sites by the counter ion NO3- was found to be stronger for the fluoride complexes of Rf than for those of Zr and Hf. The aim of the present work is to add independent evidence to the latter result by measuring Kd values for Rf on the AIX in 0.1 M HNO3/0.5 M HF and in 0.01 M HF without any HNO3. The results are obtained via an activity ratio of the long-lived α-decay descendant of 261mRf, 20-d 253Es, using the multi-column technique (MCT). These experiments corroborate the seemingly much more pronounced competition of NO3- for the exchanging sites of the AIX with respect to [RfFx](x-4)- than with [ZrFx](x-4)- and [HfFx](x-4)-.

About the article

Published Online: 2009-09-25

Published in Print: 2004-07-01


Citation Information: Radiochimica Acta, Volume 92, Issue 7, Pages 379–386, ISSN (Online) 2193-3405, ISSN (Print) 0033-8230, DOI: https://doi.org/10.1524/ract.92.7.379.35753.

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