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对山东烟台地区黄县、牟平、荣城、莱阳四县,8个公社,36个大队、70个生产队的麦田进行了有机氯农药六六六、滴滴涕污染情况的调查。检测结果说明,烟台地区由于长期连续使用有机氯农药,农田土壤和小麦普遍遭受六六六和滴滴涕的严重污染,检出率均为100%;农田灌溉水则受六六六全面污染,滴滴涕仅个别样品有痕量检出。各样本中总六六六(甲、丙、乙、丁、体总量)和总滴滴涕(PP’—DDE,PP’—(DDD,OP’—DDT,PP—DDT 总量)的平均残留量分别依次为:土壤0.1110—0.6410ppm 和0.2720—0.4975pm;灌溉水0.93—19.33ppb;小麦0.3135—1.4225ppm 和0.0820—0.2525ppm。小麦的污染与土壤污染密切相关,但小麦中的残留量高低决定于当年的用药情况。4个县平均,小麦中总六六六的残留量为0.6585ppm,超过国家制订的食品卫生标准(原粮0.5ppm)。
The investigation on the contamination of BHC and DDT in the wheat fields of Huangxian, Muping, Rongcheng and Laiyang four counties, eight communes, 36 brigades and 70 production teams in Yantai, Shandong Province was carried out. The test results showed that the long-term continuous use of organochlorine pesticides in Yantai region, farmland soil and wheat generally suffer from BHC and DDT of the serious pollution, the detection rate was 100%; farmland irrigation water is subject to the six-six comprehensive pollution, DDT only A few samples were detected. The average residues of total 666 (A, C, B, T and Bt) and total DDT (PP’-DDE, PP ’- (DDD, OP’-DDT, total amount of PP-DDT) Followed by soil 0.1110-0.6410ppm and 0.2720-0.4975pm respectively; irrigation water 0.93-19.33ppb; wheat 0.3135-1.4225ppm and 0.0820-0.2525ppm. The pollution of wheat is closely related to soil pollution, but the level of residue in wheat is decided In the current year’s medication, the average of the 4 counties was 0.6585ppm, which exceeded the food hygiene standards set by the state (original grain 0.5ppm).