Pollution characteristics and sources of polycyclic aromatic hydrocarbons in soil of Ningdong Industrial Park
【摘要】 目的分析宁东镇工业园区土壤中16种多环芳烃(PAHs)的污染特征与来源。方法于2017年4月13日,在宁东园区各工厂附近设置12个采样点,采集并检测土壤中16种PAHs的含量,采用主成分分析法解析PAHs的来源。结果宁东镇工业园区土壤中16种PAHs的总含量为392.5～3 876.6μg/kg,平均值为2 156.56μg/kg,芴、蒽、屈和苯并[k]荧蒽均未检出。1～4号采样点样品以4环、5环为主,5～12号采样点样品以2环、3环为主。来源解析表明,土壤中多环芳烃主要的污染源对土壤污染的贡献率为85.72%。结论宁东镇工业园区土壤中多环芳烃主要的污染源既有煤炭燃烧源又有交通污染源,均应加强治理。
【Abstract】 Objective To understand the pollution characteristics and sources of polycyclic aromatic hydrocarbons in the soil of Ningdong Industrial Park in Ningxia. Methods A total of 12 sampling sites were set up near the factories in Ningdong Industrial Park on April 13,2017. The soil samples were collected and the content of polycyclic aromatic hydrocarbons( PAHs)was determined,and the source of PAHs was analyzed by principal component analysis. Results The total contents of 16 PAHs,among which Flu,Ant,Chr and BkF were not detected,were 392.5-3 876.6 μg/kg,the average value was 2 156.56 μg/kg in the soil of Ningdong Industrial Park,which was dominated mainly by 4-and 5-ring PAHs in sampling sites of No.1-4,and2-and 3-ring PAHs in sampling sites of No. 5-12. The source analysis showed that the ratio of the contribution by the main factors of PAHs to the total PAHs in soil was 85.72%. Conclusion The main pollution sources of PAHs are coal combustion and traffic pollution in Ningdong Industrial Park,control measures should be strengthened more.
【Key words】 Industrial park soil； Polycyclic aromatic hydrocarbons； Pollution characteristics； Sources；
- 【文献出处】 环境与健康杂志 ,Journal of Environment and Health , 编辑部邮箱 ,2018年10期