KINETIC EXCHANGE STUDIES OF METAL-ION SUBSTITUTION IN EDTA CHELATES FE(III) - UO(2)EDTA EXCHANGE

Authors
PRINCZ E NIMARA A MARTONY L
Citation
E. Princz et al., KINETIC EXCHANGE STUDIES OF METAL-ION SUBSTITUTION IN EDTA CHELATES FE(III) - UO(2)EDTA EXCHANGE, Journal of radioanalytical and nuclear chemistry, 199(4), 1995, pp. 317-324
Citations number
11
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Analytical","Nuclear Sciences & Tecnology
Journal title
Journal of radioanalytical and nuclear chemistry → ACNP
ISSN journal
02365731
Volume
199
Issue
4
Year of publication
1995
Pages
317 - 324
Database
ISI
SICI code
0236-5731(1995)199:4<317:KESOMS>2.0.ZU;2-M
Abstract
A kinetic study of the exchange reaction between UO(2)EDTA complex and Fe(III), at a constant ionic strength of 0.1, over the concentration range of 5x10(-3) - 1x10(-2) M of each reactant and pH 4.5 - 5.5 has b een carried out radiometrically. The rate of the exchange process can be expressed by the equation: R=k1[UO(2)EDTA][Fe] + k(2)[EDTA][H+]. 1. The activation parameters calculated were Delta H = 25.95 kJ mol(-1) and Delta S = 0.67 kJ mol(-1) K-1.