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In the present work, a rapid and sensitive detection of the amlodipine (AML) based on the modified screen printed carbon electrode (SPCE) is dev­eloped. At first, SPCE was modified with magnetic core shell manganese fer­rite nanoparticles (MCSNP). Cyclic voltammetry (CV) was used to study the electrochemical behaviour of AML and its determination was conducted by applying differential pulse voltammetry (DPV). The results were showed that, the modified SPCE in comparison with unmodified SPCE exhibited the enhanced electrocatalytic activity toward the oxidation of AML. A single irreversible oxidation peak was observed at a potentials of 600 and 725 mV (on the scale of Ag/AgCl electrode) on the modified SPCE and unmodified SPCE, respectively. Under the optimized conditions, the anodic peak current of AML recorded by DPV varies linearly with AML concentration in the range 0.5–400 µM with a detection limit of 0.1 µM. The modified SPCE was used for the quantitative analysis of AML in AML tablet and urine samples and the results indicated the feasibility of the developed method for AML analysis in routine detection.

Screen printed carbon electrode modified with magnetic core shell manganese ferrite nanoparticles for electrochemical detection of amlodipine