我国土壤中有机氯农药的污染分布特征

The Pollution Distribution Characteristics of Organochlorine Pesticides in Soil of China

通过查阅大量文献,得到了我国不同地区各自代表性省份的有机氯农药的污染状况。其中上海地区OCPs主要污染物为DDTs;广东地区的OCPs以历史残留为主;湖北省土壤OCPs的残留量呈现出很明显的垂直分布趋势,污染物以DDTs为主;北京市农田土壤OCPs的平均残留量53.98μg/kg,受OCPs的污染比较严重;沈阳市土壤中OCPs的平均残留量为26.91μg/kg,主要污染物为DDTs。这将为有效防治有机氯农药的危害有着重要的意义。

The soil organochlorine pesticide pollution of each representative provinces in the different areas of China was obtained through consulting a large number of literatures. The results showed that the main pollutant of OCPs was DDTs for Shanghai,and the historical residues give priority to Guangdong Province. There was a obvious vertical distribution trend of soil OCPs residues and the dominant pollutant was DDTs. The soil OCPs average concentration was 53. 98μg / kg for farmland of Beijing,which indicated that the soil was severely polluted. For Shenyang city of Northeastern area,the farmland soil OCPs mean residue amount was 26. 91μg / kg,and the main pollutant was DDTs. These will provide important significance for the prevention of organochlorine pesticides.