Voltammetric Determination of Cobalt(II) in Zinc Sulfate Solution

A method for automated polarographic analysis for Co(II) ions in technological solutions of zinc production was developed. The influence exerted by the components of a supporting electrolyte on the sensitivity and selectivity of measurements was studied. The method is intended for determining the content of cobalt(II) in purification of a zinc sulfate solution to remove impurities and for ecological monitoring of wastewater produced at nonferrous metallurgy plants.