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New Voltammetric Approach to the Quantitation of Paracetamol in Tablets and Syrup using Chemometric Optimization Technique

Author:
Remziye Güzel,, Ekşi, Haslet, Dinç, Erdal, Solak, Ali Osman
Source:
Journal of analytical chemistry 2019 v.74 no.3 pp. 296-305
ISSN:
1061-9348
Subject:
acetaminophen, aniline, carbon electrodes, chemometrics, electrochemistry, gold, nanogold, oxidation, pH, phosphates, syrups
Abstract:
A new voltammetric approach was developed for the determination of paracetamol in tablet and syrup samples using chemometric optimization. The method is based on the use of the gold nanoparticles–polyaniline (AuNPs−PA) modified pencil graphite electrode (PGE). Electrode system was fabricated by using the electrochemical reduction of gold on aniline modified pencil electrode to give gold nanoparticles. A 3³ full factorial design was used to find optimal oxidation conditions of paracetamol on the AuNPs−PA−PGE. The optimal oxidation conditions of drug substance were found as –524 mV for the accumulation potential, 295 s for the accumulation time and pH 8.69 (for the phosphate buffer solution, 0.1 M). The determination of paracetamol was linear in the range of 2.0 × 10–⁷–6.0 × 10–⁶ M with a detection limit of 5 × 10–⁸ M. As a result, the proposed voltammetric approach gave satisfactory results for the determination of the related drug substance in tablets and syrup.
Agid:
6369935