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Analysis of chromium and copper by cathodic stripping voltammetry with mixed ligands

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Abstract

Cathodic adsorptive stripping voltammetry is one of the most sensitive analytical methods for ultratrace analysis. The detection limit is usually lower than 10−9 mol/L. Most adsorptive stripping procedures have been focused on the one ligand/one analyte approach. In order to reduce analysis time and sample volume, the possibility of simultaneously determining several metals by cathodic stripping voltammetry using a mixture of ligands was explored, e.g., by Colombo and van den Berg (1997). Here, we describe a new procedure for quantifying chromium and copper using 2,2′-bipyridine and 8-hydroxyquinoline (oxine). The effect of various operational parameters such as buffer type, ligand concentration, potential and time collection were assessed and optimized. Possible interferences by trace metals and organic matter were also investigated. Applicability for fresh water is illustrated.

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Authors and Affiliations

  1. UMR 6521, Université de Bretagne Occidentale, Laboratoire de Chimie Analytique, 6 Avenue Victor Le Gorgeu, BP 809, 29285 , Brest Cedex, France

    Marc Le Lann, Catherine Elleouet, François Quentel & Christian Louis Madec

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  1. Marc Le Lann
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  2. Catherine Elleouet
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  3. François Quentel
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  4. Christian Louis Madec
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Correspondence to Catherine Elleouet.

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Le Lann, M., Elleouet, C., Quentel, F. et al. Analysis of chromium and copper by cathodic stripping voltammetry with mixed ligands. Environ Chem Lett 1, 98–102 (2003). https://doi.org/10.1007/s10311-002-0013-4

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  • DOI: https://doi.org/10.1007/s10311-002-0013-4

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