Activity of SiDbCl in the Electrooxidation of Ascorbic Acid,Dopamine, and Uric Acid |
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| Authors: | Jacqueline Arguello Hérica A Magosso Thiago C Canevari Richard Landers Yoshitaka Gushikem |
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| Institution: | 1. Institute of Chemistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil;2. Institute of Chemistry, University of Campinas, P.?O. Box 6154, 13084‐971 Campinas, SP, Brazil;3. Institute of Physics Gleb Wataghin, University of Campinas, P.?O. Box 6165, 13083‐970 Campinas SP, Brazil |
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| Abstract: | Selective electroanalytical responses for ascorbic acid, dopamine and uric acid at a carbon modified electrode based on 3‐n‐propyl‐1‐azonia‐4‐azabicyclo2.2.2]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. |
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| Keywords: | Carbon modified electrode 3‐n‐Propyl‐1‐azonia‐4‐azabicyclo[2 2 2]octane silsesquioxane chloride Ascorbic acid Dopamine Uric acid |
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