EXTRACTION OF PERTECHNETATE WITH TETRAPHENYLPHOSPHONIUM IN THE PRESENCE OF VARIOUS ACIDS, SALTS AND HYDROXIDES

Authors
KOPUNEC R ABUDEAB FN SKRASKOVA S
Citation
R. Kopunec et al., EXTRACTION OF PERTECHNETATE WITH TETRAPHENYLPHOSPHONIUM IN THE PRESENCE OF VARIOUS ACIDS, SALTS AND HYDROXIDES, Journal of radioanalytical and nuclear chemistry, 230(1-2), 1998, pp. 51-60
Citations number
12
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Analytical","Nuclear Sciences & Tecnology
Journal title
Journal of radioanalytical and nuclear chemistry → ACNP
ISSN journal
02365731
Volume
230
Issue
1-2
Year of publication
1998
Pages
51 - 60
Database
ISI
SICI code
0236-5731(1998)230:1-2<51:EOPWTI>2.0.ZU;2-P
Abstract
Solvent extraction of pertechnetate anions from aqueous solutions of s ome mineral acids (HCl, HNO3, HClO4, H2SO4), (NaCl, NaNO3, NaClO4, K2C rO4, NaCO3), NaOH and NH4OH by tetraphenylphosphonium chloride in chlo roform and nitrobenzene was studied. The results are presented in the form of the dependencies of extraction characteristics of TcO4- (distr ibution ratio, percentage of extraction) on the (C6H5)(4)PCl, H+ and c ompetitive anion concentrations. The solvent extraction of sub-and sup er-stoichiometric ratio of TcO4-:(C6H5)(4)P+ was performed. The extrac tion constant values of ion pairs TcO4--Cl-, TcO4--NO3-, TcO4--ClO4- a nd of individual anions TcO4-, Cl-, NO3-, ClO4- were calculated.