Journal of the Serbian Chemical Society 2010 Volume 75, Issue 5, Pages: 681-687
doi:10.2298/JSC090624033P
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Voltammetric determination of the neonicotinoid insecticide thiamethoxam using a tricresyl phosphate-based carbon paste electrode

Papp Zsigmond J., Guzsvány Valéria J., Kubiak Szymon, Bobrowski Andrzej, Bjelica Luka J.

The objective of the work was to investigate the possibility of using a tricresyl phosphate-based carbon paste electrode for the direct voltammetric determination of the neonicotinoid insecticide thiamethoxam. The analyte was determined by differential pulse voltammetry in Britton-Robinson buffer pH 7.0 in the concentration range of 3.72 - 41.5 μg mL-1. The reproducibility of the analytical signal at the 7.29 μg mL-1 level was characterized by a relative standard deviation of 1.3 %. The applicability of the developed method was evaluated by determining thiamethoxam in a river water sample and a commercial formulation Actara 25 WG.

Keywords: pesticide, thiamethoxam, differential pulse voltammetry, carbon paste electrode, tricresyl phosphate

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