ESTIMATION OF ZN (II) IN PHARMACEUTICAL SAMPLES –A SOLVENT EXTRACTION STUDYA.V.L.N.S.H. HARIHARAN, S. RAVIKIRAN AND K.Y. KARUNAAbstract The current work reports on the extraction of Zinc from hydrochloric and nitric acid media by Triiso- octyl amine (TiOA) in xylene as diluent. The optimum conditions for extraction were established from the study of the effect of several variables on extraction process likeâacid concentration, standing time, concentration of metal ion, extractant, diluent etc. The extractions are nearly quantitative (98%) with the acid systems employed in the study. Stripping of metal from the organic phase was achieved effectively using ammonia solution. The extracted species was also identified - Zn X2. 2(TiOA) where X= chloride or nitrate ion. Analysis of natural synthetic mixtures and pharmaceutical samples has been attempted. |