PLUTONIUM(IV) AND PLUTONIUM(VI) EXTRACTION BY 1-HYDROXY-6-N-OCTYLCARBOXAMIDE-2(1H)-PYRIDINONE*
作者:
VadimV. Romanovski,
DavidJ. White,
Jide Xu,
DarleaneC. Hoffman,
KennethN. Raymond,
期刊:
Solvent Extraction and Ion Exchange
(Taylor Available online 1999)
卷期:
Volume 17,
issue 1
页码: 55-71
ISSN:0736-6299
年代: 1999
DOI:10.1080/07360299908934600
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Extraction of Pu(IV) and Pu(VI) from nitric acid media by the promising new extractant l-hydroxy-6-N-octylcarboxamide-2(1H)-pyridinone (octyl-1,2-HOPO) has been investigated. The effects of nitric acid, sodium, aluminum and iron(III) nitrates on extraction have been examined. Octyl-1,2-HOPO exhibits high specificity for Pu(IV) over a wide range of acidity and ionic strength. The affinity of octyl-1,2-HOPO for Pu(VI) is much less than for Pu(IV). However, the extraction of Pu(VI) is possible from acidic as well as from highly salted media. Two water soluble ligands, 1-hydroxyethane-1,1,-diphosphonic acid (HEDPA) and H(2,2)-1,2-HOPO, have been shown to be very effective for back extraction.
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