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Direct Oxidation of Ascorbic Acid at an Edge Plane Pyrolytic Graphite Electrode: A Comparison of the Electroanalytical Response with Other Carbon Electrodes
Author(s) -
Wantz Frédéric,
Banks Craig E.,
Compton Richard G.
Publication year - 2005
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200503259
Subject(s) - pyrolytic carbon , ascorbic acid , electrode , glassy carbon , materials science , electrochemistry , graphite , carbon fibers , diamond , detection limit , highly oriented pyrolytic graphite , inorganic chemistry , analytical chemistry (journal) , cyclic voltammetry , chemistry , composite material , organic chemistry , chromatography , pyrolysis , composite number , food science
The direct electrochemical oxidation of ascorbic acid at an edge plane pyrolytic graphite electrode (EPPG) is investigated and compared with other common carbon‐based electrodes, specifically glassy carbon, boron doped diamond and basal plane pyrolytic graphite. It is found that the EPPG electrode shows a significantly higher degree of electrochemical reversibility than the other electrode substrates giving rise to an analytically optimized limit of detection and sensitivity of 7.1×10 −5 M and 0.065 A M −1 respectively.