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An electrochemical flow cell with a boron-doped diamond dual-plate microtrench electrode has been developed and demonstrated for hydroquinone flow injection electroanalysis in phosphate buffer pH 7. Using the electrochemical generator-collector feedback detector improves the sensitivity by one order of magnitude (when compared to a single working electrode detector). The diffusion process is switched from an analyte consuming "external" process to an analyte regenerating "internal" process with benefits in selectivity and sensitivity.

Original languageEnglish
Pages (from-to)1866-1871
Issue number16
Early online date17 Apr 2015
Publication statusPublished - Aug 2015


  • Boron-doped diamond
  • Chromatography
  • Feedback amplification
  • Oxygen
  • Quinine
  • Separation


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