Fabrication of an Enzymatic Biosensor Based on Gold Nanoparticles Modified Electrochemical Transducer for the Detection of Organophosphorus Compounds

A facile and sensitive enzyme based electrochemical transducer has been fabricated for the detection of organophosporus compounds. The enzyme, acetylcholinesterase, was covalently immobilized on gold nanoparticles deposited electrochemically over screen printed carbon working electrode. The electrodes were characterized by scanning electron microscopy, atomic force microscopy and electrochemical methods. The enzyme-substrate reactions and...