Voltammetric Determination of Triclosan Using a System of Disposable Electrochemical Cells with Integrated Carbon Electrode

Authors

  • M. Libánský Charles University in Prague, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry, Faculty of Science, University Research Centre UNCE “Supramolecular Chemistry”, Prague
  • J. Zima Charles University in Prague, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry, Faculty of Science, University Research Centre UNCE “Supramolecular Chemistry”, Prague
  • J. Barek Charles University in Prague, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry, Faculty of Science, University Research Centre UNCE “Supramolecular Chemistry”, Prague
  • H. Dejmková Charles University in Prague, Department of Analytical Chemistry, UNESCO Laboratory of Environmental Electrochemistry, Faculty of Science, University Research Centre UNCE “Supramolecular Chemistry”, Prague

Keywords:

differential pulse voltammetry, carbon film composite electrode, triclosan, electrochemical cell system

Abstract

Optimum conditions were found for the determination of Triclosan, an environmental pollutant, by differential pulse voltammetry using a system of two types of new disposable electrochemical cells with integrated carbon composite film electrode. Concentration dependences were measured in a mixture of a buffer of pH 7 and methanol (9:1, V/V). The calculated Triclosan quantification limits were 1.64 and 0.85 µmol dm–3 for carbon-polystyrene (PS) and carbon-polycarbonate (PC) composite electrodes, respectively. The attempt to increase the sensitivity of the determination by adsorptive accumulation of Triclosan was not successful. The method was verified by the determination in a toothpaste using extraction. Concentration of the analyte was determined by the standard addition me­thod. In the case of C-PS electrode, very good repeatability of the measurements was found. In the case of C-PC electrode, lower results and a worse repeatability were observed.

Published

2014-03-15

How to Cite

Libánský, M., Zima, J., Barek, J., & Dejmková, H. (2014). Voltammetric Determination of Triclosan Using a System of Disposable Electrochemical Cells with Integrated Carbon Electrode. Chemické Listy, 108(3), 243–250. Retrieved from http://w.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/542

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