Abstract
We describe a new and promising type of selenium film electrode for anodic stripping voltammetry. This method is based on formation of copper selenide onto an in-situ formed selenium-film carbon electrode, this followed by Osteryoung square-wave anodic stripping voltammetry. Copper(II) is also in-situ electroplated in a test solution containing 0.01 mol L-1 hydrochloric acid, 0.05 mol L−1 potassium chloride and 500 µg L−1 Se(IV) at a deposition potential of −300 mV. The well-defined anodic peak current observed at about 200 mV is directly proportional to the Cu(II) concentration over the range from 1.0 to 100 µg L−1 under the optimized conditions. The detection limit (three sigma level) is 0.2 µg L−1 Cu(II) at 180 s deposition time. Relatively less interferences are shown from most of metal ions except for antimony(III). The method can be applied to analyses of river water and oyster tissue with good accuracy.
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Nagaosa, Y., Zong, P. & Kamio, A. Selenium-coated carbon electrode for anodic stripping voltammetric determination of copper(II). Microchim Acta 167, 241–246 (2009). https://doi.org/10.1007/s00604-009-0221-8
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DOI: https://doi.org/10.1007/s00604-009-0221-8