Extraction radiopolarography for determining the oxidation potentials of transplutonium elements

Journal Article · Sun Mar 01 04:00:00 EST 1987 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:6451177

Kosyakov, V N; Yakovlev, N G; Vlasov, M M

A method is described for determining the oxidation potentials for valency transitions in transplutonium elements (TPE), which is usable when the element is present in trace amounts. This is based on electrochemical oxidation or reduction of the TPE in combination with a solvent-extraction method of determining the concentration ratio for the oxidized and reduced forms. The method is applicable to determining the potential of almost any reversible reaction if the solvent-extraction parameters for the oxidized and reduced forms differ substantially, while the potential (with allowance for the extraction system) lies in a region accessible to electrochemical oxidation or reduction. Two forms of use are considered: with liquid extraction and with extraction chromatography. The method is demonstrated on the Bk(IV)/Bk(III) transition with di-2-ethylhexylphosphoric acid as extraction agent.

• OSTI ID: 6451177
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 28:4; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400105* -- Separation Procedures
400700 -- Radiochemistry & Nuclear Chemistry
ACTINIDE COMPOUNDS
BERKELIUM COMPOUNDS
BUTYL PHOSPHATES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHEMISTRY
CHROMATOGRAPHY
ELECTROCHEMISTRY
ELEMENTS
ESTERS
EXTRACTION
EXTRACTION CHROMATOGRAPHY
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MEASURING INSTRUMENTS
NITRIC ACID
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PARTITION
PHOSPHORIC ACID ESTERS
POLAROGRAPHY
POTENTIOSTATS
QUANTITATIVE CHEMICAL ANALYSIS
RADIOMETRIC ANALYSIS
REDOX POTENTIAL
REDOX REACTIONS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENT PROPERTIES
TBP
TRANSPLUTONIUM COMPOUNDS
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM COMPOUNDS
TRANSURANIUM ELEMENTS
VALENCE