Determination of methiocarb pesticide using differential pulse voltammetry with a boron-doped diamond electrode

In this article, a simple and rapid method is described for voltammetric determination of methiocarb (MTC, a pesticide of the carbamate type). Direct oxidation of MTC at a highly positive potential of about +1.4 V vs. Ag/AgCl was found to be feasible, thanks to the excellent performance of the worki...

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Bibliographic Details
Published in:Analytical methods 2015-01, Vol.7 (11), p.4671-4677
Main Authors: Chylkova, J, Tomaskova, M, Svancara, I, Janikova, L, Selesovska, R
Format: Article
Language:English
Subjects:
Calibration
Diamonds
Electrodes
Mathematical analysis
Optimization
Pesticides
Ramps
Voltammetry
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Summary:In this article, a simple and rapid method is described for voltammetric determination of methiocarb (MTC, a pesticide of the carbamate type). Direct oxidation of MTC at a highly positive potential of about +1.4 V vs. Ag/AgCl was found to be feasible, thanks to the excellent performance of the working boron-doped diamond electrode in combination with the differential pulse voltammetric ramp. After optimisation of important parameters, the signal of MTC could be calibrated in an interval of 1-55 μg mL −1 MTC, when offering a detection limit (3 σ ) of ca. 0.15 μg mL −1 MTC. The practical applicability of the method has been demonstrated on analyses of a commercial pesticide, either with respect to the total content of MTC or as its gradual and time-controlled dissolution in the model sample of the natural aquatic system. In this article, a simple and rapid method is described for voltammetric determination of methiocarb (MTC, a pesticide of the carbamate type).
ISSN:1759-9660
1759-9679
DOI:10.1039/c5ay00979k