Abstract
AbstractIn the current research, clay particles modified graphite electrode (Clay−CPE) was used for the electrocatalytic oxidation of ibuprofen (IBU). This clay was utilized to reduce the distortions of ibuprofen oxidation peak shape and for a better signal to noise ratio. The surface characterization of the clay and their activity toward IBU oxidation were studied by electrochemical methods in particular: cyclic voltammetry, Tafel plots and electrochemical impedance spectroscopy. The number of the electrons, rate constant and kinetic parameters related to ibuprofen oxidation were calculated. The ibuprofen peak gets more symmetrical in the presence of clay giving a detection limit (LOD) of 8.35×10−7 mol L−1 (3Sb/M) using differential pulse voltammetry. The main practical applicability of the modified electrode was explored by determining ibuprofen in tablets and human blood samples.
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