Journal
TALANTA
Volume 63, Issue 2, Pages 239-243Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2003.09.034
Keywords
yttrium; CA-100; lanthanide
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The selective extraction of yttrium front heavy lanthanide by liquid-liquid extraction using CA-100 in the presence of the complexing agent, such as EDTA, DTPA, and HEDTA was investigated. The extraction of heavy lanthanide in the present of the complexing agent was Suppressed when compared to that of Y because of the masking effect, but the selective extraction of Y was enhanced. All complexing agents formed 1: 1 complex with rare earth elements (RE), and only free rare earth ions could take part in the extraction. The condition for separation was obtained by exploring the effects of the complexing agent concentration, the extractant concentration, pH and the equilibration time on the extraction of the heavy rare earth elements. (C) 2003 Published by Elsevier B.V.
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