有机氯农药的主要品种ＢＨＣ和ＤＤＴ分别于 182 5年和1874年问世 ,广泛用于农业植保和公共卫生 ,曾成为世界多数国家首选的杀虫剂。因其化学性质稳定、在环境中降解十分缓慢以及它的亲脂性等特点 ,会在环境和动植物体内大量蓄积 ,通过食物链进入人体 ,对机体健康构成潜在威胁 The main types of organochlorine pesticides BHC and DDT were produced in 1852 and 1874, respectively. They are widely used in agricultural plant protection and public health and have become the pesticide of choice in most countries in the world. Due to its stable chemical properties, very slow degradation in the environment and its lipophilic characteristics, it accumulates in a large amount in the environment, animals, and plants and enters the human body through the food chain, posing a potential threat to the health of the human body