Simultaneous Electrochemical Determination of Paracetamol and Allura Red in Pharmaceutical Doses and Food Using a Mo(VI) Oxide-Carbon Paste Microcomposite |
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| Authors: | Edgar Nagles Mario Ceroni Claudia Villanueva Huerta John J Hurtado |
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| Institution: | 1. Facultad de Química e Ingeniería Química, Universidad Nacional Mayor de San Marcos, Lima, Perú;2. Departament of Chemistry, Universidad de los Andes, Carrera 1 No. 18A-12, 111711 Bogotá, Colombia |
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| Abstract: | This work presents a new application for MoO3 combined with carbon paste to prepare a microcomposite electrode (Mo(VI)Ox/CPE) for the simultaneous determination of paracetamol (PCM) and Allure Red (AR) by square-wave voltammetry (SWV). The anodic peak currents for PCM and AR were 70.0 and 80.0 % high compared with an unmodified carbon paste electrode. The surface areas of Mo(VI)Ox/CPE and CPE were evaluated by cyclic voltammetry. The detection limit were 0.14 and 0.38 μmol/L for PCM and AR respectively. The relative standard deviations (RSDs) were 2.0 % (n=7). Stability, shelf life and possible interferences were also evaluated with very acceptable results. |
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| Keywords: | carbon paste molybdenum oxide paracetamol allura red square wave voltammetry |
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