US EPA

7444842 

Journal Article 

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

Chylkova, J; Tomaskova, M; Svancara, I; Janikova, L; Selesovska, R 

2015 

1 

Analytical Methods
ISSN: 1759-9660
EISSN: 1759-9679 

Royal Society of Chemistry 

7 

11 

4671-4677 

English 

10.1039/c5ay00979k 

WOS:000355557500034 

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 (3σ) 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. © The Royal Society of Chemistry. 

Electrodes; Voltammetry; Boron doped diamond electrodes; Detection limits; Differential pulse; Differential pulse voltammetry; Direct oxidation; Natural aquatic systems; Positive potential; Voltammetric determination; Pesticides