Abstract： A novel determination method of Cd(Ⅱ)，Cu(Ⅱ) and Co(Ⅱ) in zinc electrolyte without preseparation using anodic stripping voltammetry was established, with HAc-NaAc （pH 5.0）as buffer solution, NH4Cl as exchange electrolyte and auxiliary complexing agent which enlarged peak stripping potentials of the ions, sharpened the waveshape and eliminated the effect of Zn(Ⅱ), and ascorbic acid as deoxidizing agent which eliminated oxidation wave.The results showed that the potential of peak stripping current for Cd(Ⅱ), Cu(Ⅱ), Co(Ⅱ) were -0.82 V, -0.22 V and +0.02 V(vs.SCE).The linear range were 6×10-7~2.5×10-5, 3×10-7~3×10-5，1.5×10-6~3.0×10-4 mol/L； The detection limit were 3×10-8，2×10-7和1×10-8 mol/L. The conventional ions that may exist in the electrolyte didn't affect the determination.This method was applied to the determination of actual sample, and the results were in coincidence with those by ICP-AES method.
［3］ 赵丰刚苯芴酮分光光度法测定锌电解液中的锡［J］.有色矿冶(NonFerrous Mining and Metallurgy)，2008,24(2)：5354
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