Abstract
AbstractThe voltammetric behavior of clopidogrel bisulfate (CLO), an antiplatelet agent, was investigated for the first time in the literature on a cathodically pretreated boron‐doped diamond electrode (CP‐BDDE) using cyclic (CV) and square‐wave voltammetry (SWV). It was observed an anodic peak for CLO, suitable for analytical purposes, at about 1.15 V (vs. Ag/AgCl (3.0 mol L−1 KCl)) by CV in Britton‐Robinson buffer solution (pH 5.0). On the physical‐chemical characterization of the interface phenomena, it was proved that electrode reaction of the analyte was controlled by a diffusion process. At optimized square‐wave parameters (pulse amplitude of 60 mV, frequency of 30 Hz and scan increment of 3 mV), the obtained analytical curve was linear for the CLO concentration range from 0.60 to 60.0 μmol L−1, with a detection limit of 0.60 μmol L−1. The simple, rapid and greener analytical method, based on CP‐BDDE electrochemical sensor, was successfully applied in real samples (pharmaceuticals and urine).
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