Carbamate, triazinic and benzotriazinic pesticide analysis using an inhibition tyrosinase organic phase enzyme sensor

摘要

Tyrosinase enzyme inhibition has recently been used with increasing frequency to determine different types of pesticides, in particular those of the triazinic type. Starting from this premise, the present authors, who originally developed inhibition biosensors based on the enzymes butyrylcholinesterase + choline oxidase to determine organophosphorus and carbamate pesticides, also as OPEE devices (i.e. organic phase enzyme electrodes), more recently suggested a new tyrosinase inhibition OPEE suitable for determining triazinic pesticides. In the present research several triazinic pestides have been tested using this inhibition OPEE. In addition they indicated how, using this biosensor, also benzotriazinic and carbamate pesticides can be detected up to a concentration of the order of 10{sup}(-8)-10{sup}(-9) mol l{sup}(-1).