Published December 1992
| Version v1
Journal article
Solvent extraction of heptavalent technetium
Description
An extraction study was performed on technetium in its highest oxidation state as a function of nitric acid concentration at 25, 50 and 70 deg C. A long chain amine (tri-n-octylamine TOA) and an organophosphorus solvent (TBP) have been investigated. Addition of NH4NO3 has a salting-out effect on the extraction of TBP in the aqueous phase and therefore decreases the distribution coefficient for heptavalent technetium. The mechanism of extraction is discussed in the light of the results obtained. (author) 11 refs.; 8 figs
Additional details
Publishing Information
- Journal Title
- Journal of Radioanalytical and Nuclear Chemistry
- Journal Volume
- 163
- Journal Issue
- 2
- Journal Page Range
- p. 363-372.
- ISSN
- 0236-5731
- CODEN
- JRNCDM
INIS
- Country of Publication
- Hungary
- Country of Input or Organization
- Hungary
- INIS RN
- 24068723
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- AMMONIUM NITRATES; CHEMICAL REACTION KINETICS; DISTRIBUTION FUNCTIONS; NITRIC ACID; SOLVENT EXTRACTION; TBP; TECHNETIUM COMPLEXES; TECHNETIUM 99; TOA
- Descriptors DEC
- AMINES; AMMONIUM COMPOUNDS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BUTYL PHOSPHATES; CHELATING AGENTS; COMPLEXES; ESTERS; EXTRACTION; HOURS LIVING RADIOISOTOPES; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; KINETICS; NITRATES; NITROGEN COMPOUNDS; NUCLEI; ODD-EVEN NUCLEI; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; RADIOISOTOPES; REACTION KINETICS; SEPARATION PROCESSES; TECHNETIUM ISOTOPES; TRANSITION ELEMENT COMPLEXES; YEARS LIVING RADIOISOTOPES