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Activity of SiDbCl in the Electrooxidation of Ascorbic Acid, Dopamine, and Uric Acid
Author(s) -
Arguello Jacqueline,
Magosso Hérica A.,
Canevari Thiago C.,
Landers Richard,
Gushikem Yoshitaka
Publication year - 2011
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.201000390
Subject(s) - ascorbic acid , chemistry , uric acid , differential pulse voltammetry , dopamine , electrode , detection limit , chromatography , octane , inorganic chemistry , nuclear chemistry , electrochemistry , cyclic voltammetry , organic chemistry , biochemistry , food science , neuroscience , biology
Selective electroanalytical responses for ascorbic acid, dopamine and uric acid at a carbon modified electrode based on 3‐ n ‐propyl‐1‐azonia‐4‐azabicyclo[2.2.2]octane silsesquioxane chloride (SiDbCl) is reported. The overlapped peaks observed at an unmodified electrode are resolved into three well defined voltammetric peaks allowing the simultaneous determination of the three species. Detection limits of 37, 0.3 and 0.1 μmo L −1 of ascorbic acid, dopamine and uric acid, respectively, were calculated from calibration curves based on differential pulse voltammetric experiments performed in Britton ‐ Robinson buffer solution at pH 7.04.