Based on the esterase inhibition actions of pesticides,different concentrations of dichlorvos,trichlorfon,malathion and carbaryl were determined by free and immobilized chicken liver esterase.

• 利用农药对酯酶活力的抑制反应,分别采用游离的和固定化的鸡肝酯酶,对不同浓度的敌敌畏、敌百虫、马拉硫磷和西维因进行了测定。