Feedback-amplified electrochemical dual-plate boron-doped diamond microtrench detector for flow injection analysis

Grace E M Lewis, Andrew J. Gross, Barbara Kasprzyk-Hordern, Anneke T. Lubben, Frank Marken

Research output: Contribution to journalArticle

2 Citations (Scopus)
121 Downloads (Pure)

Abstract

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
JournalElectrophoresis
Volume36
Issue number16
Early online date17 Apr 2015
DOIs
Publication statusPublished - Aug 2015

Keywords

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

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