A cyclic voltammetric technique has been developed for approximating the quantities of active chemical species present in zinc sulfate electrolytes. The experimental apparatus consisted of a Pyrex "H" cell, an aluminum cathode encased in a Teflon holder, a carbon anode and a mercurous sulfate reference electrode. Voltammograms were obtained using industrial, purified neutral leach solution (Cominco Ltd., Trail, BC) acidified to give a final concentration of 0.77 M Zn++ and 1 M H2SO4. The polarization curves were then evaluated and used as reference standards to compare with results obtained when various organic and inorganic additions were made. The deposit morphologies obtained for short-time cathodic cycles were also studied with the aid of a Scanning Electron Microscope. Changes in concentrations of glue in the 5 to 10 ppm range and of antimony in the 5 to 10 ppb range were detected using the techniques described. © 1976 The Minerals, Metals & Materials Society - ASM International - The Materials Information Society.
B. A. Lamping and T. J. O'Keefe, "Evaluation Of Zinc Sulfate Electrolytes By Cyclic Voltammetry And Electron Microscopy," Metallurgical Transactions B, vol. 7, no. 4, pp. 551 - 558, Springer, Dec 1976.
The definitive version is available at https://doi.org/10.1007/BF02698587
Materials Science and Engineering
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01 Dec 1976