A COMBINED POTENTIOMETRIC-COULOMETRIC METHOD FOR ANALYSIS OF URANIUM IN CARBONATE MEDIA

Authors
FERRI D SALVATORE F VASCA E MIRANDA R
Citation
D. Ferri et al., A COMBINED POTENTIOMETRIC-COULOMETRIC METHOD FOR ANALYSIS OF URANIUM IN CARBONATE MEDIA, Annali di chimica, 84(7-8), 1994, pp. 283-293
Citations number
19
Categorie Soggetti
Chemistry
Journal title
Annali di chimica → ACNP
ISSN journal
00034592
Volume
84
Issue
7-8
Year of publication
1994
Pages
283 - 293
Database
ISI
SICI code
0003-4592(1994)84:7-8<283:ACPMFA>2.0.ZU;2-6
Abstract
A potentiometric method for the determination of uranium is described. The method is based on the measurement of the potential of Pt and/or Hg electrodes in carbonate solutions of U(VI) and U(V). The potential arises from the electrochemical reaction UO2(CO3)3(4-) + e- = UO2(CO3) 3(5-) The ratio [UO2(CO3)3(4-)]/[UO2(CO3)3(5-)] is changed coulometric ally by reducing U(VI) to U(V) on a Hg cathode. The method is caracter ized by high precision. The average relative error amounts to about 0. 2%.