Simultaneous Determination of Ascorbic Acid, Acetaminophen, and Tryptophan by Square Wave Voltammetry Using

Authors: Dimitrios Nikolelis, Ali A Ensafi, Hassan Karimi-Maleh, Shadpour Mallakpour

Publication date: 2012/3/1

Journal name: Electroanalysis

Volume: 24

Pages: 666-675

Publisher: Wiley-Blackwell

N-(3, 4-Dihydroxyphenethyl)-3, 5-dinitrobenzamide modified-multiwall carbon nanotubes
paste electrode was fabricated and used as an electrocatalyst for the oxidation of ascorbic
acid (AA), acetaminophen (AC), and tryptophan (TP) at pH 7.0. In a mixture containing AA,
AC, and TP, the separation potentials were large enough to determine those compounds
individually and simultaneously. The peak currents obtained were found to be linearly
dependent on AA, AC, and TP concentrations in the ranges of 0.03-70, 0.6-452, and 0.7- ...