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Simultaneous determination of sinapic acid and tyrosol by flow-injection analysis with multiple-pulse amperometric detection

  • Dmytro Bavol
  • Anastasios Economou
  • Jiri Zima
  • Jiri Barek
  • Hana Dejmkova
Original Paper

Abstract

This work describes a simple, fast (frequency of 170 injections h−1), and low-cost method for the simultaneous determination of two antioxidants, sinapic acid and tyrosol, using multiple-pulse amperometric detection at a glassy carbon electrode incorporated in a flow-injection analysis cell. A sequence of potential pulses was selected to detect sinapic acid and tyrosol separately in the course of a single injection step. During the characterization of electrochemical detection, conditions for the determination of the two antioxidants (such as the injected volume and the flow rate) were studied and the analytical figures of merit were calculated. The repeatability (expressed as %) RSD was < 4.0% (n = 10) and excellent linearity was obtained across two concentration ranges from 1.0 to 100 μM; the limits of detection of sinapic acid and tyrosol were around 1.0 μM.

Graphical abstract

Keywords

Electrochemistry Flow-injection analysis Glassy carbon electrode Oxidations Voltammetry 

Notes

Acknowledgements

Financial support of the Czech Science Foundation (Project P206/12/G151) is acknowledged and Erasmus programme.

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Laboratory of Analytical Chemistry, Department of ChemistryUniversity of AthensAthensGreece
  2. 2.UNESCO Laboratory of Environmental Electrochemistry, University Research Centre Supramolecular Chemistry, Department of Analytical Chemistry, Faculty of ScienceCharles UniversityPrague 2Czech Republic

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