Background: Antioxidants are one of the important additives in food samples due to their
role in protecting human cells against the effects of free radicals. The analysis of antioxidants is
essential due to the role of antioxidants in improving body health.
Objective: A square wave voltammetric sensor was fabricated for the determination of tert-butylhydroxyanisole
(TBHA) based on the application of CdO/SWCNTs and 1-methyl-3-butylimidazolium
chloride as mediators for the modification of carbon paste electrode (MBCl/CdO/SWCNTs/CPE). The
MBCl/CdO/SWCNTs/CPE improved the sensitivity of TBHA ~ 6.7 times and showed a linear dynamic
range 0.07-600 µM with detection limit 0.02 µA for the analysis of TBHA. The pH investigation confirmed
that electro-oxidation of TBHA occurred by exchanging two electrons and two protons. In addition,
the MBCl/CdO/SWCNTs/CPE was used for determination of TBHA in food samples.
Keywords: CdO/SWCNTs, Tert-butylhydroxyanisole, 1-methyl-3-butylimidazolium chloride, Voltammetric analysis, square
wave voltammetric platform, food samples.
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