Ligand replacement induced chemiluminescence for selective detection of an organophosphorus pesticide using bifunctional Au-Fe3O4 dumbbell-like nanoparticles.

A facile ligand replacement induced chemiluminescence method is developed for selective detection of the organophosphorus pesticide parathion-methyl based on the use of bifunctional Au-Fe3O4 dumbbell-like nanoparticles to overcome the interference from coexisting substances in a real sample.