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Xanthates as selective ligands for voltammetric study of Cu(II) in environmental samples

N.Krishnaiah, K.Purusotham Naidu, N.V.S.Naidu, K.Saraswathi

Copper(II) in the presence of potassium n-propyl xanthate (Kpxan) and potassium cyclo hexyl xanthate (Kchxan) in ammonium chloride-ammoniumhydroxidemediumin the pH range 9.2 to 10.6 gives catalytic hydrogen waves at mercury electrode and the peak height is proportional to concentration of metal ion. The method developed is simple, rapid and sensitive without interferences of many metal ions and applicable to the analysis of alloys and agriculture materials.An electrode reaction mechanism based on d.c. polarographic and cyclic voltammetric results of the system is also suggested.