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In this study, describes the voltammetric oxidation and determination of phenylephrine (PHE) hydrochloride at a new chemically modified electrode. Iron nanoparticle (INPs) was dispersed in Nafion solution to obtain a INP-Nafion-modified CPE for the voltammetric analysis of PHE .The electrochemical behaviour of PHE on INP-Nafion-modified CPE was studied, using cyclic voltammetry as a diagnostic technique. The effects of amount of INPs-Nafion dispersion, pH, and scan rate on the response of modified electrode for the oxidation of PHE were investigated. Using differential pulse voltammetry (DPV), the modified electrode indicated a dynamic linear range for quantitative determination of PHE in the range of 5 µM-130 µM, and the detection limit was estimated to be 0.76 µM. The method was developed for the determination of PHE in pharmaceutical samples with satisfactory results.

Voltammetric study and Determination of Phenylephrine Hydrochloride at INP-Nafion-modified CPE Sensor Employing Differential Pulse Voltammetry