Pirim Setiarso, Kuminingsih May Lukmana
In this study, graphene oxide was made by using improved method of Hummer for paracetamol detection by cyclic voltammetry. The main reason for using graphene oxide electrode for paracetamol detection is the conductive nature of graphene oxide. The cathodic current peak in the graphene oxide electrode has a more sensitive value than the carbon paste electrode. Paracetamol detection of cyclic voltammetric detection has several factors used to accurately detect paracetamol. Factors that can affect the electrode composition, the pH of the solution, the deposition time and the scan rate. In this study, paracetamol detection using graphene oxide electrode has the optimum electrode composition in the ratio of graphene oxide with paraffin 8:2. The pH of optimum solution for detection of paracetamol is 6, 5-second deposition time and scan rate 200 mV/s. Graphene oxide electrode has a detection limit of up to 0.494 ppm or 0.00327 mM (3.27 µM) with recovery 99.615 %. The proposed sensor shows good selectivity, sensitivity, stable repetition and precision. © 2018 Chemical Publishing Co. All rights reserved.
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Surabaya, Jl. Ketintang, Surabaya, 60231, Indonesia
