Microwire chronoamperometric determination of concentration, diffusivity, and salinity for simultaneous oxygen and proton reduction

James Weber, Andrew J. Wain, Frank Marken

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)
188 Downloads (Pure)

Abstract

A microwire chronoamperometric method is reported employing a 25μm diameter platinum microwire for multi-parameter electroanalysis with digital simulation-based evaluation (employing DigiElch 4.F). Concentration and diffusion coefficient data are obtained for the reduction of oxygen and for the reduction of protons individually and simultaneously in saline (0.1M to 4.0M NaCl) electrolyte media. The diffusion coefficient and concentration data for oxygen allows salinity levels to be estimated. The microwire chronoamperometry method offers versatility and precision due to (i) a slow approach to steady state (when compared to microdisc methods) and (ii) insignificant viscosity effects (when compared to hydrodynamic methods).

Original languageEnglish
Pages (from-to)1829-1835
Number of pages7
JournalElectroanalysis
Volume27
Issue number8
Early online date12 Jun 2015
DOIs
Publication statusPublished - 1 Aug 2015

Keywords

  • Brine
  • Corrosion
  • Hydrogen
  • Microwire electrode
  • PH
  • Salt
  • Sensors
  • Voltammetry

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