Extraction with organophosphorus acids. II. Complex formation of americium, curium, and californium in a two-phase system

Journal Article · Tue Dec 31 23:00:00 EST 1974 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:7273397

Barketov, E S; Zaitsev, A A; Filimonov, V T

It was found that several complex forms can exist at equilibrium in the organic phase. It was established that Am and Cm are extracted by 2EHPPA in the form of two equilibrium forms MA/sub 3/ . HA (60%) and MA/sub 3/ . 2HA (40%), where M is the metal ion and A is the anion of the organophosphorus acid, while Cf is extracted chiefly in the form of CfA/sub 3/ . HA. The extraction constant of the complex forms MA/sub 3/ . HA (log K/sub I//sub Am--Cm/ = 4.46 +- 0.18, log K/sub I//sub Cf/ = 6.03 +- 0.16 in the reaction with the monomer and log K/sub II//sub Am--Cm/ = 0.34 +- 0.18, log K/sub II//sub Cf/ = 2.00 +- 0.16 in the reaction with the dimer) and MA/sub 3/ . 2HA (log K/sub I//sub Am--Cm/ = 5.91 +- 0.18 in the reaction with the monomer and log K/sub II//sub Cf/ = 0.92 +- 0.18 in the reaction with the dimer) were calculated.

• OSTI ID: 7273397
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 17:3; 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
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400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALPHA DECAY RADIOISOTOPES
AMERICIUM
AMERICIUM 241
AMERICIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CALIFORNIUM
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CHEMICAL ANALYSIS
CURIUM
CURIUM 244
CURIUM ISOTOPES
DISTRIBUTION FUNCTIONS
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
ESTERS
EUROPIUM 152
EUROPIUM 154
EUROPIUM ISOTOPES
EVEN-EVEN NUCLEI
EXTRACTION
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOTOPES
METALS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PERCHLORIC ACID
PHOSPHONIC ACID ESTERS
QUANTITATIVE CHEMICAL ANALYSIS
RADIOISOTOPES
RADIOMETRIC ANALYSIS
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SEPARATION PROCESSES
SOLVENT EXTRACTION
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
YEARS LIVING RADIOISOTOPES