PMBP extraction and TPE separation in alkaline pyrophosphate solutions

Journal Article · Tue Nov 01 04:00:00 EST 1988 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:6083614

Karalova, Z K; Bukina, T I; Lavrinovich, E A; Trofimov, T I; Kulyako, Yu M; Myasoedov, B F

Measurements have been made on the solvent extraction of Am(III), Am(V), Cm(III), and Eu(III) in trace and macroscopic amounts from (NH/sub 4/)/sub 4/P/sub 2/O/sub 7/ (pH = 7.6) and Na/sub 4/P/sub 2/O/sub 7/ (pH = 10) solutions as coordination compounds with 1-phenyl-3-methyl-4-benzoylpyrazol-5-one (PMBP). A method has been devised for separating weighable amounts of americium and curium, which is based in trivalent curium being extracted quantitatively from 0.1 M sodium pyrophosphate (pH 10) by 0.1 M PMBP solution in chloroform, where high distribution coefficients apply, while americium is electrochemically oxidized in that medium to Am(VI) and on contact with the extraction agent is reduced to Am(V) and remains in the aqueous phase. The separation factor for the Cm(III)-Am(V) pair is about 10/sup 3/.

• OSTI ID: 6083614
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 30:2; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METAL COMPOUNDS
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM 243
AMERICIUM COMPOUNDS
AMERICIUM ISOTOPES
AMMONIUM COMPOUNDS
AZOLES
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
CURIUM 242
CURIUM 243
CURIUM 244
CURIUM 245
CURIUM 246
CURIUM COMPOUNDS
CURIUM ISOTOPES
DAYS LIVING RADIOISOTOPES
ELECTROLYSIS
EUROPIUM COMPOUNDS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXTRACTION
HALOGENATED ALIPHATIC HYDROCARBONS
HEAVY NUCLEI
HETEROCYCLIC COMPOUNDS
ISOTOPE SEPARATION
ISOTOPES
LYSIS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PURIFICATION
PYRAZOLES
PYROPHOSPHATES
RADIOISOTOPES
RARE EARTH COMPOUNDS
SEPARATION PROCESSES
SODIUM COMPOUNDS
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SPECTROPHOTOMETRY
TRANSPLUTONIUM COMPOUNDS
TRANSURANIUM COMPOUNDS
VALENCE
YEARS LIVING RADIOISOTOPES