Abstract
This study is focused on the application of a carbon film electrode for the determination of micromolar concentrations of pesticide 2-nitrophenol using modern voltammetric methods. For the determination of 2-nitrophenol, direct current (DCV) and differential pulse (DPV) voltammetry were chosen. The following optimal conditions for the determination of 2-nitrophenol were found: Britton–Robinson buffer of pH 5.0 for DCV and pH 6.0 for DPV, and the regeneration potential cycles (E in = 0 mV, E fin = 0 mV). Under these conditions, limit of quantification was found to be 1.2 × 10−6 mol dm−3 for DCV and 2.0 × 10−6 mol dm−3 for DPV in deionized water. The limit of quantification for model samples of drinking water was 3.0 × 10−7 mol dm−3 for DCV and 1.0 × 10−6 mol dm−3 for DPV. The applicability of carbon film electrode for the determination of micromolar concentrations of 2-nitrophenol based on cathodic reduction of present nitro group and in model samples of drinking water was confirmed.
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Acknowledgments
This research was carried out in the framework of specific university research of the Charles University in Prague (Project SVV 260205) and of the project Open Science III (Reg. No. CZ.1.07/2.3.00/35.0023) supported by Academy of Science of Czech Republic. J.B. thanks the Grant Agency of the Czech Republic (Project P206/12/G151) and T.R. thanks the Grant Agency of the Charles University in Prague (Project GAUK 468214) for financial support.
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Rumlová, T., Kabátová, A., Fojta, M. et al. Determination of 2-nitrophenol using carbon film electrode. Monatsh Chem 147, 173–179 (2016). https://doi.org/10.1007/s00706-015-1593-6
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DOI: https://doi.org/10.1007/s00706-015-1593-6