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Determination of arsenic by cathodic stripping voltammetry at a hanging mercury drop electrode

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Abstract

Arsenic (III), respectively arsenic(V) after the reduction were determined in model solutions and some inorganic and organic materials by fast scan differential pulse cathodic stripping voltammetry and by direct current cathodic stripping voltammetry with a rapid increase of potential. The accumulation on a hanging mercury drop electrode followed by cathodic stripping was carried out in 0.7–0.8M HCl or 1–2M H2SO4 solutions containing Cu(II)-ions. Detection limits calculated from regression parameters was determined to be under 1 ng/ml for the samples containing very low arsenic concentrations. The relative standard deviation did not reach 8% for arsenic contents about of 5 ng/ml.

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Authors and Affiliations

  1. Department of Analytical and Organic Chemistry, Faculty of Natural Sciences, Palacký University, 771 46, Olomouc, Czech Republic

    Milan Kotouček & Jarmila Vašicová

  2. Agricultural Regional Laboratory, 798 12, Prostějov-Kralický Háj, Czech Republic

    Josef Růžička

Authors
  1. Milan Kotouček
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  2. Jarmila Vašicová
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  3. Josef Růžička
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Kotouček, M., Vašicová, J. & Růžička, J. Determination of arsenic by cathodic stripping voltammetry at a hanging mercury drop electrode. Mikrochim Acta 111, 55–62 (1993). https://doi.org/10.1007/BF01240167

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  • DOI: https://doi.org/10.1007/BF01240167

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