Abstract
A simple, rapid and selective electrochemical method is proposed as a novel and powerful analytical technique for the solid phase determination of less than 4% antimony in lead-antimony alloys without any separation and chemical pretreatment. The proposed method is based on the surface antimony oxidation of Pb/Sb alloy to Sb(III) at the thin oxide layer of PbSO4/PbO that is formed by oxidation of Pb and using linear sweep voltammetric (LSV) technique. Determination was carried out in concentrate H2SO4 solution. The influence of reagent concentration and variable parameters was studied. Antimony of Pb/Sb alloys can be determined in the range of 0.0056–4.00% with a detection limit of 0.0045% and maximum relative standard deviation of 4.26%. This method was applied for the determination of Sb in lead/acid battery grids satisfactory.
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The authors acknowledge for the Isfahan University of Technology Council for supporting this work.
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Rezaei, B., Damiri, S. Application of surface electrochemical passivation of lead-antimony alloy for a simple and rapid electrochemical determination of antimony content. J Solid State Electrochem 10, 465–468 (2006). https://doi.org/10.1007/s10008-005-0003-0
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DOI: https://doi.org/10.1007/s10008-005-0003-0