Abstract
The electrochemical behavior of sodium alendronate on copper microparticle- and copper nanoparticle-modified carbon paste electrodes was investigated. In the voltammograms recorded using microparticles, a single anodic oxidation peak appeared, while using nanoparticles, two anodic peaks appeared. The anodic currents were related to the electrocatalytic oxidation of alendronate via the active species of Cu(III). The catalytic rate constant for the electrocatalytic oxidation process and the diffusion coefficient of alendronate were obtained to be 1.57 × 103 cm3 mol−1 s−1 and 2.44 × 10−6 cm2 s−1, respectively. A sensitive and time-saving detection procedure was developed for the analysis of alendronate, and the corresponding analytical parameters were reported. Alendronate was determined with a limit of detection of 11.26 μmol L−1 with a linear range of 50–6,330 μmol L−1. The proposed amperometric method was applied to the analysis of commercial pharmaceutical tablets, and the results were in good agreement with the declared values.
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The financial support of the Research Councils of Islamic Azad University and the K. N. Toosi University of Technology are gratefully acknowledged.
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Heli, H., Faramarzi, F. & Sattarahmady, N. Voltammetric investigation and amperometric detection of the bisphosphonate drug sodium alendronate using a copper nanoparticles-modified electrode. J Solid State Electrochem 14, 2275–2283 (2010). https://doi.org/10.1007/s10008-010-1069-x
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DOI: https://doi.org/10.1007/s10008-010-1069-x