Electrogenerated chemiluminescence quenching of Ru(bpy)3 2+ (bpy=2,2′-bipyridine) in the presence of acetaminophen, salicylic acid and their metabolites

▶ Efficient quenching of the electrogenerated chemiluminescence is observed. ▶ Acetaminophen, salicylic acid and related compounds can be detected. ▶ The mechanism of quenching involves benzoquinones formed upon electrolysis.