NiFe2O4 Nanoparticles-modified Screen Printed Electrode for Electrochemical Detection for Sudan I

In this work, a sensitive Sudan I electrochemical sensor was assembled using NiFe2O4 nanoparticles modified screen printed electrode. Due to the synergetic effect of NiFe2O4 nanoparticles displayed high electrochemical activity with well-defined voltammetric peaks of Sudan I oxidation and lower overpotential compared with unmodified electrode. According to the results of differential pulse voltammetry (DPV), under optimized conditions, a good linear response was observed for the concentration of Sudan I in the range of 0.1–100.0 μM with a detection limit of 0.05 μM. The developed electrochemical sensor was successfully applied to determine Sudan I in water samples. This study indicated that NiFe2O4 nanoparticles based electrochemical sensor can be a promising and reliable tool for rapid analysis of Sudan I.