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Extraction and spectrophotometric determination of Nd(III), Th(IV) and U(VI) in synthetic brine using Chlorophosphonazo III

✍ Scribed by Jian-Feng Chen; Fawwaz I. Khalili; Abdul K. Mohammed; Gregory R. Choppin

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 439 KB
Volume: 284
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(94)85064-x

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✦ Synopsis

AbStlYlCt

A simple method has been developed to determine micromolar concentrations of Nd(III), Th(IV) and UWI) in brine. The method involves the extractive separation of these cations from brine matrix species by using ChIorophosphonaxo III as extractant with 1-butanol as solvent, and the spectrophotometric determination of the concentration of extracted species in the butanol phase. The lowest concentrations that could be determined are estimated to be 5 x IO-' M for Nd(II1) and 2 X lo-' M for Th(IV) and U(VI).

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