Abstract
In this study, a carbon paste electrode (CPE) was chemically modified with Pt/carbon nanotubes (CNTs) nanocomposite and 8,9-dihydroxy-7-methyl-12H-benzothiazolo [2,3-b] quinazolin-12-one (DMBQ). The synthesized nanocomposite was characterized with different methods such as transmission electron microscopy (TEM) and X-ray diffraction (XRD). The modified electrode was used as an electrochemical sensor for the determination of trace amounts of N-acetylcysteine (N-AC). The propose sensor showed very efficient electrocatalytic activity for the anodic oxidation of N-AC, owing to a substantial decrease in anodic overpotentials. The peak current of square wave voltammograms (SWV) of N-AC increased linearly with its concentration in the range of 0.1–600 μM. The detection limit was 0.07 μM at a signal-to-noise ratio of 3, using square wave voltammetry. The modified electrode has been successfully applied for the assay of N-AC in pharmaceutical and biological samples.
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We are grateful to the Sari Branch, Islamic Azad University, Sari, Iran and Kerman Graduate University of Advanced Technology and the Iranian Nanotechnology Initiative Council for their support.
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Arabali, V., Karimi-Maleh, H., Beitollahi, H. et al. A nanostructure-based electrochemical sensor for square wave voltammetric determination of N-acetylcysteine in pharmaceutical and biological samples. Ionics 21, 1153–1161 (2015). https://doi.org/10.1007/s11581-014-1271-4
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DOI: https://doi.org/10.1007/s11581-014-1271-4