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https://hdl.handle.net/10316/8287
Título: | Electrochemical Oxidation of Rutin | Autor: | Ghica, Mariana-Emilia Brett, Ana Maria Oliveira |
Data: | 2005 | Citação: | Electroanalysis. 17:4 (2005) 313-318 | Resumo: | An electrochemical investigation of rutin oxidation on a glassy carbon electrode was carried out using cyclic voltammetry, differential pulse voltammetry and square-wave voltammetry over a wide pH interval. The electrochemical oxidation is a complex process, which proceeds in a cascade mechanism, related with the 4-hydroxyl groups of the rutin molecule. The catechol 3prime,4prime-dihydroxyl group is the first to be oxidized by a two-electron - two-proton reversible oxidation reaction, followed by an irreversible oxidation reaction due to the 5,7-dihydroxyl group. Both mechanisms are pH dependent. An adsorption process is also observed and the oxidation products block the electrode surface. | URI: | https://hdl.handle.net/10316/8287 | DOI: | 10.1002/elan.200403100 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Química - Artigos em Revistas Internacionais |
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