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Adsorptive stripping voltammetric determination of cobalt in the presence of dimethylglyoxime and cetyltrimethylammonium bromide

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Abstract

A sensitive procedure for determination of micro-traces of Co(II) by adsorptive stripping voltammetry is proposed. The procedure exploits the enhancement of the cobalt peak obtained by use of the system Co(II)–dimethylglyoxime–piperazine-1,4-bis(2-ethanesulfonic acid)–cetyltrimethylammonium bromide. Using the optimized conditions, a detection limit (based on the 3σ criterion) for Co(II) of 1.2×10−11 mol L−1 (0.7 ng L−1) was achieved. The calibration plot for an accumulation time of 30 s was linear from 5×10−11 to 4×10−9 mol L−1. The procedure was validated by analysis of certified reference materials and natural water samples.

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Authors and Affiliations

  1. Faculty of Chemistry, Maria Curie-Sklodowska University, 20-031, Lublin, Poland

    Mieczyslaw Korolczuk, Aleksandra Moroziewicz, Malgorzata Grabarczyk & Romualda Kutyła

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  1. Mieczyslaw Korolczuk
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  2. Aleksandra Moroziewicz
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  3. Malgorzata Grabarczyk
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  4. Romualda Kutyła
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Correspondence to Mieczyslaw Korolczuk.

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Korolczuk, M., Moroziewicz, A., Grabarczyk, M. et al. Adsorptive stripping voltammetric determination of cobalt in the presence of dimethylglyoxime and cetyltrimethylammonium bromide. Anal Bioanal Chem 380, 141–145 (2004). https://doi.org/10.1007/s00216-004-2734-7

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  • DOI: https://doi.org/10.1007/s00216-004-2734-7

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