This work aims to synthesize an o-aminobenzoic acid
(ABA)-functionalized Amberlite XAD-4 resin where the
chelating ligand is bound to the copolymer via the –N=N–
covalent linkage, and to use the product as a sorbent for
heavy metal (i.e. Pb(II), Cd(II), Ni(II), Co(II) and Zn(II))
preconcentration from aqueous solution.