Extraction from HNO{sub 3} solutions and separation of Pu(IV) from Am(III) by diphenyl(dialkyl carbamoylmethyl)phosphine oxides
Journal Article
·
· Radiochemistry
OSTI ID:136009
- V.I. Vernadskii Institute of Geochemistry and Analytical Chemistry, Moscow (Russian Federation); and others
Five carbamoylmethylphosphine oxide (CMPO) extractants with phenyl substituents on the P atom and alkyl groups (butyl, octyl, isoamyl) or cyclic hydrocarbons (piperidine, morpholine) on the N atom are used to study the extraction of Pu(IV) from HNO{sub 3} solutions by CMPO in a polar aromatic fluorinated diluent as a function of [HNO{sub 3}] and [CMPO]. All studied CMPOs quantitatively extract Pu(IV) from HNO{sub 3} with distribution coefficients that are 2-3 orders of magnitude greater than those of Am(III). The elements Pu and Am can be separated during back-extraction.
- OSTI ID:
- 136009
- Journal Information:
- Radiochemistry, Journal Name: Radiochemistry Journal Issue: 4 Vol. 36; ISSN RDIOEO; ISSN 1066-3622
- Country of Publication:
- United States
- Language:
- English
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