INVESTIGATION OF U(VI) EXTRACTION WITH CALIXARENE - APPLICATION TO ANALYSIS OF URINE SAMPLE

Authors
BAGLAN N DINSE C COSSONNET C ABIDI R ASFARI Z LEROY M VICENS J
Citation
N. Baglan et al., INVESTIGATION OF U(VI) EXTRACTION WITH CALIXARENE - APPLICATION TO ANALYSIS OF URINE SAMPLE, Journal of radioanalytical and nuclear chemistry, 226(1-2), 1997, pp. 261-265
Citations number
16
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Analytical","Nuclear Sciences & Tecnology
Journal title
Journal of radioanalytical and nuclear chemistry → ACNP
ISSN journal
02365731
Volume
226
Issue
1-2
Year of publication
1997
Pages
261 - 265
Database
ISI
SICI code
0236-5731(1997)226:1-2<261:IOUEWC>2.0.ZU;2-3
Abstract
A macrocyclic molecule, the calix[6]arene 4(6), functionalized with ca rboxy groups, has been studied and its extraction efficiency towards u ranium determined in a two phases solvent-extraction system. Two solve nts, dichloromethane and benzene were used to follow uranium extractio n from media containing sodium ions. The study of the extraction param eters allowed proposing an extraction scheme with each solvent. The ex traction efficiency was found to increase with pH, with an optimal eff iciency of nearly 100%. No decrease of uranium extraction was observed in synthetic solutions containing sodium ions (spiked with Na-22) and /or Pu-239. Under specific conditions, almost 100% of uranium have bee n extracted by the calixarene from real urine samples.