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  • Title: Application of gallium film electrode for elimination of copper interference in anodic stripping voltammetry of zinc.
    Author: Tyszczuk K, Korolczuk M, Grabarczyk M.
    Journal: Talanta; 2007 Mar 30; 71(5):2098-101. PubMed ID: 19071570.
    Abstract:
    For elimination of copper interference in anodic stripping determinations of zinc at mercury and bismuth film electrodes gallium ions are usually added to the supporting electrolyte. In the presented studies novel ex situ formed gallium film electrode was applied for this purpose. The proposed electrode is less toxic than mercury one while the detection limit for zinc was lower than for bismuth film electrode following the same deposition time. The calibration graph for deposition time of 60s was linear from 5x10(-8) to 2x10(-6)mol L(-1). The determinations of zinc were carried out from undeaerated solutions. The proposed procedure was applied to zinc determination in certified reference material and tap water sample.
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