A catalytic polarographic method for the determination of microgram quantities of Ce(IV) is developed based on the catalytic currents of cerium(IV) in the presence of NH4Cl – NH4OH at pH 6.2 with piperazine. Piperazine produces catalytic current with Ce(IV) at peak potential -0.1 to -0.6 V vs. SCE. The procedure was applied for the estimation of Ce(IV) in water samples. The method is simple, sensitive and free from interference of many metal ions.
D.C.Polarography, Catalytic currents, Cerium(IV), Piperazine, Water samples, Differential pulse polarography