在北京市城区选正常人群的人乳进行1982～1984连续三年的有机氯化合物浓度监测,以此观察有机氯化合物对环境和人体的污染程度以及它们对健康危害的可能性。监测结果表明,北京人乳中DDT比经济发达国家约高8倍,六六六约高20倍,而多氯联苯则低得多。连续监测表明DDT、六六六在北京人体中的含量自1983年以后迅速下降,但要降到经济发达国家现在的水平约需20年。 In the urban area of ​​Beijing, normal human milk was selected to monitor the concentration of organochlorine compounds for three consecutive years from 1982 to 1984, so as to observe the pollution of the organochlorine compounds to the environment and the human body and the possibility of their health hazards. Monitoring results show that DDT in Beijing human milk is about 8 times higher than in economically developed countries and about 20 times higher in 666, while PCBs are much lower. Continuous monitoring shows that the content of DDT and BHC in Beijing has dropped rapidly since 1983, but it will take about 20 years to reach the current level in economically developed countries.