EXTRACTION AND SPECTROPHOTOMETRIC DETERMINATION OF ND(III), TH(IV) AND U(VI) IN SYNTHETIC BRINE USING CHLOROPHOSPHONAZO-III

Authors
CHEN JF KHALILI FI MOHAMMED AK CHOPPIN GR
Citation
Jf. Chen et al., EXTRACTION AND SPECTROPHOTOMETRIC DETERMINATION OF ND(III), TH(IV) AND U(VI) IN SYNTHETIC BRINE USING CHLOROPHOSPHONAZO-III, Analytica chimica acta, 284(3), 1994, pp. 593-597
Citations number
14
Categorie Soggetti
Chemistry Analytical
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
284
Issue
3
Year of publication
1994
Pages
593 - 597
Database
ISI
SICI code
0003-2670(1994)284:3<593:EASDON>2.0.ZU;2-I
Abstract
A simple method has been developed to determine micromolar concentrati ons of Nd(III), Th(IV) and U(VI) in brine. The method involves the ext ractive separation of these cations from brine matrix species by using Chlorophosphonazo III as extractant with I-butanol as solvent, and th e spectrophotometric determination of the concentration of extracted s pecies in the butanol phase. The lowest concentrations that could be d etermined are estimated to be 5x10(-7) M for Nd(III) and 2x10(-7) M fo r Th(IV) and U(VI).