Abstract: An amperometric sensor for organophosphotriester insecticides employing polymer catalysis, as an artificial enzyme, was developed. The polymer catalysis was composed of the Co2+- imidazoles complexes which is the mimic of the catalytic center of the organophosphotriester insecticides hydrolysis enzyme, phosphotriesterase (PTE). The polymer catalysis enabled to hydrolyze paraoxon to p-nitrophenol and diethylphosphoric acid. The hydrolysate p-nitrophenol was subsequently oxidized on the anodic electrode, at the sensor system employing polymer catalysis. The lower detection limit was 100 μM for paraoxon at 40 degreesC in 4 min
Template and target information: organophosphotriester insecticides, paraoxon