Carbon microsphere - polystyrene composite electrode for three-phase boundary oil analysis: quinizarin in methyllaurate

Sunyhik D. Ahn, Dawid Kaluza, Martin Jönsson-Niedziólka, John M. Mitchels, Frank Marken

Research output: Contribution to journalArticle

Abstract

Oil analysis for the case of quinizarin in methyllaurate is demonstrated with a disposable carbon microsphere - polystyrene composite electrode. Oxidation and reduction of quinizarin are observed as three-phase boundary processes at the immiscible oil | water | carbon interface. Randomly packed glassy carbon microspheres (2-12μm diameter) held together with a polystyrene binder (ca. 0.1% by weight) are immobilized onto a pencil lead electrode and used for electrochemical oil analysis. Pore-filling with oil is optimised for voltammetric detection and fluorescence spectroscopy is employed to support the mechanistic analysis based on voltammetry. Future applications for a wider range of oils and additives are proposed.

Original languageEnglish
Pages (from-to)1043-1049
Number of pages7
JournalElectroanalysis
Volume27
Issue number4
Early online date12 Feb 2015
DOIs
Publication statusPublished - Apr 2015

Keywords

  • Anti-oxidant
  • Biofuel
  • Carbon microspheres
  • Oil analysis
  • Quinizarin
  • Sensor
  • Surface tension

Fingerprint Dive into the research topics of 'Carbon microsphere - polystyrene composite electrode for three-phase boundary oil analysis: quinizarin in methyllaurate'. Together they form a unique fingerprint.

Cite this