Electroanalysis of Bentazon Residues in Salvia Officinalis Extract Essential Oils Using ZnFe2O4 Anchored on Reduced Graphene Oxide Nanoparticles Modified Electrode

Document Type: Original research article


1 Chemistry Department, Payame Noor University, P.O. BOX 19395-4697 Tehran, Iran

2 Departments of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran

3 Physics Department, Payame Noor University, P.O. BOX 19395-4697 Tehran, Iran


Essential oil of bentazon- treated plants were extracted and herbicide content analyzed by electrochemical method. For this propose, carbon paste electrode was modified using ZnFe2O4 anchored on reduced graphene oxide which synthesized by solvothermal approach. The nature and morphology of nanoparticles were characterized using XRD, FT-IR and Fe- SEM image. Under optimal experimental condition, modified electrode produces powerful oxidation signal for bentazon at +0.95 V (vs. Ag/AgCl). The anodic current was increased linearly with bentazon concentration in the range of 0.1 -20.0 µmol L-1 with a detection limit of 0.07 µmol L-1. The practical usage of modified electrode was evaluated by electro analysis of extracted bentzon residues at three applied doses which revealed reasonable results.



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