Determination of clopidogrel using square wave voltammetry

The determination of clopidogrel, an antiplatelet agent, was performed at a gold electrode in pH 3.7 acetate buffer using cyclic voltammetry (CV) and square wave voltammetry (SWV). Each voltammogram was characterized by the well defined peak at approximately 1.0 V. The current of anodic stripping peak exhibited a linear dependence on the clopidogrel concentration in the range from 317.89 to 935.16 μg cm-3. The obtained linearity was applied to determine clopidogrel in the tablet form of the pharmaceutical preparation (Plavix®). The results were compared to the UV spectrophotometric and HPLC methods.