有机氯农药是一种高残留性农药,在其禁用以前,我国每年生产的有机氯农药高达2×10~5t,使用量非常大。使用的主要品种为BHC(六六六)和DDT(滴滴涕)。由于有机氯农药在环境中性质稳定,并易通过食物链在生物及人体内富集,故国内已于1983年起禁止生产和使用。为了弄清自停用后几年来食品有机氯农药残留水平,并用以间接反映环境中有机氯农药污染状况,我们对棉产区与稻产区鸡蛋中有 Organochlorine pesticides is a kind of high residual pesticide. Before its banning, the annual production of organochlorine pesticides in our country is as high as 2 × 10 ~ 5t, and the dosage is very large. The main varieties used are BHC and DDT. Since organochlorine pesticides are of stable nature in the environment and are easily enriched in organisms and humans through the food chain, their production and use in the country have been banned since 1983. In order to clarify the residual levels of organochlorine pesticides in foodstuffs after their suspension for several years and indirectly reflect the pollution status of organochlorine pesticides in the environment,