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

Fingerprint

Polystyrenes
Phase boundaries
Microspheres
Oils
Carbon
Electrodes
Composite materials
Fluorescence spectroscopy
Glassy carbon
Voltammetry
Binders
1,4-dihydroxyanthraquinone
Oxidation
Water

Keywords

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

Cite this

Carbon microsphere - polystyrene composite electrode for three-phase boundary oil analysis : quinizarin in methyllaurate. / Ahn, Sunyhik D.; Kaluza, Dawid; Jönsson-Niedziólka, Martin; Mitchels, John M.; Marken, Frank.

In: Electroanalysis, Vol. 27, No. 4, 04.2015, p. 1043-1049.

Research output: Contribution to journalArticle

Ahn, Sunyhik D. ; Kaluza, Dawid ; Jönsson-Niedziólka, Martin ; Mitchels, John M. ; Marken, Frank. / Carbon microsphere - polystyrene composite electrode for three-phase boundary oil analysis : quinizarin in methyllaurate. In: Electroanalysis. 2015 ; Vol. 27, No. 4. pp. 1043-1049.
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