Microwire Chronoamperometric Determination of Concentration,Diffusivity, and Salinity for Simultaneous Oxygen and Proton Reduction |
| |
Authors: | James Weber Andrew J. Wain Frank Marken |
| |
Affiliation: | 1. Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK;2. National Physical Laboratory, Teddington, TW11 0LW, UK |
| |
Abstract: | A microwire chronoamperometric method is reported employing a 25 µm 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 (0.1 M to 4.0 M 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). |
| |
Keywords: | Microwire electrode Voltammetry Brine Hydrogen Salt Corrosion pH Sensors |
|
|