农药企业搬迁土地多环芳烃的风险评价  

Risk Assessment of a Brownfield Contaminated by PAHs at Changzhou,China

作　　者：何欢[1] 刘廷凤[2] 孙成[1] 章霖之[3] 王荣俊[3] 蔡焕兴[3] 

机构地区：[1]南京大学环境学院,南京210046 [2]南京工程学院环境工程系,南京211167 [3]常州市环境监测中心站,江苏常州213001

出　　处：《农业环境科学学报》2011年第3期482-486,共5页Journal of Agro-Environment Science

基　　金：江苏省社会发展项目(BS2007026);江苏省自然科学基金项目(BK2009254)

摘　　要：以常州市某农药厂搬迁土地为研究对象,在监测分析土壤中16种多环芳烃(PAHs)的基础上,对该区域土壤进行健康风险和生态风险评价。结果表明,研究区域土壤中∑PAHs的含量范围为0～1.546mg·kg-1,优势化合物中萘、菲等低环化合物含量大于高环的荧蒽、苯并[k]荧蒽和芘等化合物,且土壤中PAHs可能来源于石油源。健康风险评价结果在可接受的10-6～10-4范围内,而生态风险评价表明,尽管研究区域土壤中的多环芳烃不存在严重的生态风险,但是化合物苊和芴含量超出了风险评价低值(ER-L和ISQV-L),存在着对生物的潜在危害。Risk assessment of polycyclic aromatic hydrocarbons（PAHs） in soil samples collected from the location of a factory that previously manufactured pesticides in Changzhou was evaluated.The concentrations of PAHs were determined by high performance liquid chromatography equipped with fluorescence/ultraviolet detector.Health risk and ecological risk assessment was introduced to evaluate the soil quality.The carcinogenic risk and non-carcinogenic risk of different exposure ways and the quotient method were adopted to characterize health risk and ecological risk of PAHs in the soil,respectively.The results showed that total PAHs content in soil samples was in the range of 0~1.546 mg·kg-1.Naphthalene,phenanthrene,fluoranthene,benzo[k]fluoranthene and pyrene were the main contaminants in the soil,and the amounts of naphthalene,phenanthrene and other low-ring compounds were higher than that of high-ring fluoranthene,benzo[k]fluoranthene,pyrene and other compounds,which indicates that polycyclic aromatic hydrocarbons in the studied soil might be derived from the unburned oil source.Carcinogenic risk value was in an acceptable range of 10-6 to 10-4,and the non-carcinogenic risk value was also lower than the acceptable value（≤1）,which indicated that the environmental health risk of the soil was in an acceptable range.However,the ecological risk assessment showed a potential risk of the PAHs in the soil.Acenaphthene and fluorene content exceeded the low risk assessment value（ER-L and ISQV-L）,indicating there might be a potential biological hazard.

关 键 词：健康风险评价 生态风险评价 污染场地 PAHS 

分 类 号：X820.4[环境科学与工程—环境工程]