Oxidation of L-ascorbic acid on a gold electrode

✍ Scribed by M. Rueda; A. Aldaz; F. Sanchez-Burgos

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 434 KB
• Volume: 23
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(78)87040-6

✦ Synopsis

Voltapams of L-ascorbic acid on a gold electrode show the existence of two oxidation waves but no reduction wave. An analysis of the i-E curves was carried out together with the Tafel slopes and reaction orders. The products from the first oxidation were identified by paper chromatography.

A scheme is proposed for the overall reaction of the first oxidation together with a reaction mechanism at potentials co&p&ding to the foot of the wave.