Voltammetric Analysis of Naproxen inGraphite Electrodes and Its Determination inPharmaceutical Samples

The present work discuses new findings in the electrochemistry of naproxen over graphite electrodes. This new approach, allows the proposal of a simple and competitive low-cost method to carry out naproxen?s voltammetric quantification. Naproxen?s indirect quantification through an adsorption anodic wave was performed at a graphite bar electrode using differential pulse voltammetry. An anodic current maximum was recorded at a potential of ?0.3?V referred to a saturated Ag/AgCl reference electrode. The calibration plot having a correlation coefficient of 0.990, sensibility of 4.190.62?A?cm3?g?1, with detection and quantification limits of 0.68 and 3.3?g?cm?3, respectively.