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

作者：Chylkova J; Tomaskova M^*; Svancara I; Janikova L; Selesovska R

来源：Analytical Methods, 2015, 7(11): 4671-4677.

DOI：10.1039/c5ay00979k

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 mu g mL(-1) MTC, when offering a detection limit (3s) of ca. 0.15 mu g 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.

• 出版日期2015