Amperometric flow system for blood glucose determination using an immobilized enzyme magnetic reactor

► Synthesis of magnetic particles modified with glucose oxidase. ► Use of magnetic particles in a reactor preceding the detector in a flow injection system. ► Synthesis, characterization and application as mediator of [Fe(tris(3,5-dimethyl-1-pirazolyl)borate)2]+[FeCl4]−. ► Analysis of serum glucose without any sample treatment