Ascorbic acid determination using a carbon paste electrode modified with iron(III) ions adsorbed on humic acid

An amperometric sensor was constructed, by using humic acids to immobilize Fe3+ ions ona carbon paste electrode (CPE-HA-Fe), and used for ascorbic acid (H2A) determination. The cyclicvoltammogram of the electrode showed electrochemical response due to the Fe3+/Fe2+ couple atE1/2=+0.78 V vs SCE, usin...

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Udgivet i:Eclética Química
Main Authors: T. N. Oliveira, M. A. Ballin, L. S. Silva, C. R. M. Peixoto
Format: Artigo
Sprog:Inglês
Udgivet: Universidade Estadual Paulista Júlio de Mesquita Filho 2006
Fag:
Química
humic acids
ascorbic acid
iron(III) ions
carbon paste electrode
Online adgang:https://www.redalyc.org/articulo.oa?id=42931405
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