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农药企业搬迁土地多环芳烃的风险评价

Keywords: 健康风险评价,生态风险评价,污染场地,PAHs

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Abstract:

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。

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