Voltammetric determination of phenylglyoxylic acid in urine using graphite composite electrode

Tomáš Navrátil, Zdeňka Šenholdová, Kumaran Shanmugam, Jiří Barek

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40 Citations (Scopus)

Abstract

A composite electrode prepared from graphite powder and epoxy resin was applied as a working electrode for the determination of phenylglyoxylic acid (one of the metabolites of styrene) in human urine. Cathodic differential pulse stripping voltammetry was used and optimum conditions have been found giving the limit of determination about 5 mg L-1. All results were compared with those obtained using hanging mercury drop electrode. For the confirmation of suggested mechanism of the electrochemical reaction the elimination voltammetry with linear scan was used.

Original languageEnglish
Pages (from-to)201-206
Number of pages6
JournalElectroanalysis
Volume18
Issue number2
DOIs
Publication statusPublished - 1 Jan 2006
Externally publishedYes

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Keywords

  • Elimination voltammetry with linear scan
  • EVLS
  • Graphite composite electrode
  • Phenylglyoxylic acid
  • Styrene
  • Vinylbenzene
  • Voltammetry

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

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