Extraction radiopolarography for determining the oxidation potentials of transplutonium elements

Journal Article · Sun Mar 01 00:00:00 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), Vol. 28:4; Other Information: Translated from Radiokhimiya; 28: No. 4, 543-547(Jul-Aug 1986)
• Country of Publication: United States
• Language: English

Related Subjects

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