DEVELOPMENT OF VOLTAMMETRIC METHOD FOR DETERMINATION OF TRACE OF Cu(II) IN THE PRESENCE OF Fe(III) IN WATER USING 5,5'-DIPHENYLIMIDAZOLIDINE-2,4-DIONE DERIVATIVE
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2021-01-01
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Abstract
A new cyclic voltammetric method has been developed for the determination of Cu(II) in the presence of Fe(III) in tap and surface water samples using complexing properties of 5,5'-diphenylimidazolidine-2,4-dione derivative. In acetate buffer solution (0.1 mol L-1; pH 5.25 ± 0.01) containing minimum ten-fold excess of imidazolidine derivative, copper metal ion was determined as complex compound following redox process into the working hanging mercury drop electrode (HMDE) versus Ag/AgCl, 3 mol L-1 KCl using as a reference electrode. Limits of detection as low as 0.0415 mg L-1 Cu(II) was achieved. The interfering effect of various cations as K(I), Na(I), Mg(II), Ca(II), Al(III), Zn(II), Fe(II), Fe(III) and anions: Cl-, NO3-, SO42-, PO43-, most common in surface and tap water samples, were also assessed.