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Renewable Silver-Amalgam Film Electrode for Rapid Square-Wave Voltammetric Determination of Thiamethoxam Insecticide in Selected Samples

Authors

  • Maria Putek,

    1. Department of Building Materials Technology, Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland
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  • Valéria Guzsvány,

    Corresponding author
    1. Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 3, 21000 Novi Sad, Republic of Serbia
    • Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 3, 21000 Novi Sad, Republic of Serbia
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  • Bojan Tasić,

    1. Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 3, 21000 Novi Sad, Republic of Serbia
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  • Jerzy Zarębski,

    1. Department of Building Materials Technology, Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland
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  • Andrzej Bobrowski

    1. Department of Building Materials Technology, Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland
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Errata

This article is corrected by:

  1. Errata: Erratum: Renewable Silver-Amalgam Film Electrode for Rapid Square-Wave Voltammetric Determination of Thiamethoxam Insecticide in Selected Samples Volume 25, Issue 2, 573, Article first published online: 11 February 2013

Abstract

The paper presents the use of a renewable silver-amalgam film electrode (Hg(Ag)FE) for the determination of the insecticide thiamethoxam (TMO) in Britton-Robinson buffer pH 7.0 (LOD=0.25 µg mL−1, LOQ=0.70 µg mL−1) by direct cathodic square-wave voltammetry (SWV). The voltammetric response for TMO obtained at this electrode was the same as that obtained with a hanging mercury drop electrode, represented by two distinct reduction peaks. Since the electron transfer processes are coupled with chemical reactions involving protons, the SWV signals strongly depend on the pH of the supporting electrolyte. The developed Hg(Ag)FE-SWV method was tested for the determination of TMO in spiked honey and river water samples, as well as for the determination of its content in the commercial formulation Actara 25 WG.

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