PREPARATION AND ANALYTICAL PROPERTIES OF A CHELATING RESIN FUNCTIONALIZED WITH 1-HYDRAZINOPHTHALAZINE LIGAND

A poly[styrene-co-(divinylbenzene)] resin (XAD-4) functionalized with 1-hydrazinophthalazine ligand has been prepared and its analytical pro perties investigated. The pH dependence of sorption of metal ion on th e resin has been determined for Cu(II), Ni(II), Co(II), Zn(II), Cd(II) , Pb(II), Fe(III) and Cr(III). Trace amounts of these metal ions were quantitatively retained on the resin and recovered by eluting with 1 m ol l(-1) hydrochloric acid. The resin was found to be selective for Fe (III) and its separation from other metal ions was carried out effecti vely. Metal ions concentrations were determined using AAS. (C) 1997 El sevier Science B.V.