Electrocatalytic Oxidation and Determination of Sulfite with a Novel Copper-Cobalt Hexacyanoferrate Modified Carbon Paste Electrode

✍ Scribed by Arash Siroueinejad; Abdolkarim Abbaspour; Mojtaba Shamsipur

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 208 KB
• Volume: 21
• Category: Article
• ISSN: 1040-0397
• DOI: 10.1002/elan.200804535

✦ Synopsis

Abstract

The electrocatalytic oxidation of sulfite has been studied at a stable electroactive thin film of copper‐cobalt hexacyanoferrate (CuCoHCF) hybrid electrodeposited on a carbon paste electrode (ECMCPE). A linear range of 5 μM to 5 mM of sulfite, with an experimental detection limit of 1 μM, was obtained using the cyclic voltammetric method. The oxidation of sulfite showed no significant fouling effect on the modified electrode surface at sulfite concentrations below 5 mM. The proposed modified electrode exhibited several attractive features, including simple preparation, fast response, good stability and repeatability, and could be applied to sulfite determination in real samples.