Abstract
This paper describes the optimization and in house validation of an electroanalytical method for the determination of 2,4,6-trichlorophenol (2,4,6-TCP) in beverages for the first time. Cyclic voltammetry and square wave voltammetry techniques, 0.1 mol L−1 Britton–Robinson buffer (pH 8.0) and boron-doped diamond electrode were used for this purpose. The system was optimized and the obtained analytical curves presented good linearity in the concentration range investigated; moreover, the linear model did not present a lack-of-fit. The limits of detection and quantification (0.15 μmol L−1 and 0.46 μmol L−1, respectively) of the used method were low. In addition, this method presented good accuracy and precision (recovery rates between 90.0% and 118.0% and relative standard deviation values in the range of 0.74% to 1.51%). Thus, it was suggested that the developed electroanalytical method could be used for the determination of 2,4,6-TCP in beverages and presented advantages, such as speed, low cost, and low consumption of toxic reagents, compared with traditional methods.
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Acknowledgements
The authors would like to thank the Coordination for the Improvement of Higher Education Personnel (CAPES), the Araucária Foundation and the National Council for Scientific and Technological Development (CNPq) for funding; to the Group of Electroanalysis and Nanostructured Materials (GEMN), Laboratory of the Trace Analysis and Instrumentation Group (LabGATI) and Unicentro for the facilities. We would like to thank Editage (www.editage.com) for English language editing.
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Schwab, E.D.P., de Almeida, S.V., Felsner, M.L. et al. Determination of 2,4,6-TRICHLOROPHENOL in Beverages Using Voltammetry: Optimization and Validation Studies. Food Anal. Methods 13, 1000–1007 (2020). https://doi.org/10.1007/s12161-020-01716-4
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DOI: https://doi.org/10.1007/s12161-020-01716-4