山西小店污灌区土壤中多环芳烃的研究

Polycyclic Aromatic Hydrocarbons in Soil of Xiaodian Wastewater Irrigation Area in Shanxi Province

选择典型的山西小店污灌区作为研究对象,采集小店污灌区的地下水样和土壤样,研究经过长时间、高浓度的污灌作用后,多环芳烃类物质是否有向深部迁移的可能性以及多环芳烃各单体的分布特征,并采用潜在危害指数法对污灌区重点监控指标进行筛选,结果表明:芴、菲、苊烯、荧蒽、蒽和芘6种单体易于向土壤深部迁移,这6种单体是地下水污染防治和水质安全保障的重要优控指标。该研究成果可为再生水回灌补给地下水的水质安全提供依据。

Polycyclic aromatic hydrocarbons （PAHs） exist extensively in the environment of organic pollutants,characterized by low rate of degradation and biological accumulation which can be enriched through food chain. PAHs are toxic, carcinogenic, teratogenic and mutagenetic. This paper chooses the typical wastewater irrigation area with long-term and high concentration irrigation as the research object to find out the possibility of PAHs migration into the deep site, so as to provide reference for the supply of safe water quality. With the study of soil and groundwater samples of Xiaodian wastewater irrigation area in Shanxi Province by using the potential harm index method and the PAHs properties, the paper finds that fluorene, phenanthrene, acenaphthylene, fluoranthene, anthracene and pyrene are prone to transfer deeply.