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

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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: [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)1679-1684
Number of pages6
JournalMonatshefte fur Chemie
Volume149
Issue number9
DOIs
Publication statusPublished - 1 Sep 2018
Externally publishedYes

Keywords

  • Electrochemistry
  • Flow-injection analysis
  • Glassy carbon electrode
  • Oxidations
  • Voltammetry

ASJC Scopus subject areas

  • Chemistry(all)

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