The influence of methanol and ethanol on the efficiency of extraction of lanthanides(III) with 1-(2-pyridylazo)-2-naphthol (PAN) in carbon tetrachloride

摘要

The efficiency of extraction of microquantities of Eu(III), Sm(III) and Gd(III) from water—50 (v/v) methanol phase or water—50 (v/v) ethanol phase withPANsolutions in CCl4was examined. Separation factors for the following pairs of lanthanides(III) were determined: Eu-Sm, Eu-Gd, Sm-Gd, as well as Eu-Ln, Sm-Lnand Gd-Ln, where:Ln=Tb, Ho, or Lu; their changes with respect to the composition of the polar phase were also estima