Electrochemical sensor for bisphenol A based on magnetic nanoparticles decorated reduced graphene oxide

► Fe3O4-rGO was synthesized and used as electrode matrix. ► Electrocatalytic oxidization of BPA was realized by Fe3O4-rGO. ► Sensitivity was improved due to the synergetic effects of Fe3O4 and rGO. ► Sensitive analysis of BPA in six real samples has been performed.