Published October 1995 | Version v1
Journal article Metadata-only

Extraction of Eu and Gd radioisotopes from nitrate medium by synergistic mixture of thenoyltrifluoroacetone and 15-crown-5 or 18-crown-6 in benzene

Creators

  • 1. Atomic Energy Authority, Cairo (Egypt). Hot Laboratories Centre

Description

The effect of adding 15-crown-5 (15C5) or 18-crown-6 (18C6)≡CE, for the extraction of Eu or Gd ≡M3+, by thenoyltrifluoroacetone (HTTA) in benzene from a nitrate aqueous medium of constant ionic strength [0.2(H+, NaNo3)] was studied. The results indicated that the extraction is enhanced by adduct formation in the organic phase, the main extracted species formed being M(NO3)(TTA)2HTTA for the chelate and M(NO3)(TTA)2xCE for the adduct. The extraction and stability constants of these species were evaluated. The thermodynamic parameters for the extraction of both Eu and Gd with HTTA alone as well as with its mixture with each of the crown ethers, 15C5 and 18C6, were determined and discussed. (author). 11 refs., 5 figs., 2 tabs

Additional details

Publishing Information

Journal Title
Journal of Radioanalytical and Nuclear Chemistry
Journal Volume
196
Journal Issue
2
Journal Page Range
p. 369-375.
ISSN
0236-5731
CODEN
JRNCDM

Conference

Title
American nuclear society symposium on nuclear archeology.
Dates
14 Nov 1994.
Place
Washington, DC (United States).

INIS

Country of Publication
Hungary
Country of Input or Organization
Hungary
INIS RN
27010009
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BENZENE; CROWN ETHERS; EUROPIUM COMPLEXES; GADOLINIUM COMPLEXES; SOLVENT EXTRACTION; TEMPERATURE DEPENDENCE; TTA
Descriptors DEC
AROMATICS; COMPLEXES; ETHERS; EXTRACTION; HETEROCYCLIC COMPOUNDS; HYDROCARBONS; KETONES; ORGANIC COMPOUNDS; ORGANIC FLUORINE COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; ORGANIC SULFUR COMPOUNDS; RARE EARTH COMPLEXES; SEPARATION PROCESSES