Abstract
This study is related to the development of a highly sensitive and selective electrode for the electroanalysis of dicofol (DCF) by the modification of a glassy carbon electrode (GCE) with graphene (GR) nanosheets. GR was characterized by Fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM), transmission electron microscopy (TEM), and electrochemical methods. The electrochemical reduction of DCF was observed on both bare GCE and GR-modified GCE (GRE). The electrochemical reaction of DCF on GRE was observed to be an adsorption controlled. Differential pulse stripping voltammetry was chosen in the electrochemical analysis of DCF, and two linear calibration ranges from 5.0 × 10−8 to 5.0 × 10−7 M and from 5.0 × 10−7 to 4.2 × 10−4 M were obtained with a low detection limit of 1.08 × 10−7 M (N = 5) under the optimized experimental conditions. The electrode developed was successfully used to monitor dicofol in a series of spiked samples.
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We thank the Turkish Scientific and Technological Research Council (grant no. 209T118) for the financial support. The work was also supported by the Gazi University Scientific Research Fund (05/2010-05).
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Koçak, B., Er, E. & Çelikkan, H. Stripping voltammetric analysis of dicofol on graphene-modified glassy carbon electrode. Ionics 21, 2337–2344 (2015). https://doi.org/10.1007/s11581-015-1407-1
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DOI: https://doi.org/10.1007/s11581-015-1407-1