Solvent extraction separation of zirconium (IV) with 2-octylaminopyridine from succinate media—Analysis of real samples

摘要

A systematic study on liquid-liquid extraction separation of zirconium (IV) from 25 mL 0.02 M sodium succinate solution using 10 mL 0.087 M 2-Octylaminopyridine (2-OAP) as an cxtractant has been carried out. Quantitative extraction of Zr (IV) is observed at pH 3.7-5.0 using 0.01 - 0.03 M sodium succinate with 0.087 M 2-OAP in xylene. Zirconium (IV) has been back extracted with 0.5 M HNO3 (3×10 mL). The nature of extracted species in organic phase is determined by using conventional slope analysis method. The proposed method is applicable to separate Zr (IV) from associated metals like W(VI), Fe(III), Mo(VI), Y(III), Al(III), V(V), U(VI) and Th(IV) and also in the analysis of Zr (IV) from various synthetic mixtures, real samples of alloy, thin films and nanopowder.