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浑蒲灌区土壤中多环芳烃的分布及生态响应

张 娟 范书凯 杜晓明 杨俊诚 戴九兰 侯 红

张 娟, 范书凯, 杜晓明, 杨俊诚, 戴九兰, 侯 红. 浑蒲灌区土壤中多环芳烃的分布及生态响应[J]. 环境科学研究, 2014, 27(5): 505-512. doi: 10.13198/j.issn.1001-6929.2014.05.08
引用本文: 张 娟, 范书凯, 杜晓明, 杨俊诚, 戴九兰, 侯 红. 浑蒲灌区土壤中多环芳烃的分布及生态响应[J]. 环境科学研究, 2014, 27(5): 505-512. doi: 10.13198/j.issn.1001-6929.2014.05.08
ZHANG Juan, FAN Shu-kai, DU Xiao-ming, YANG Jun-cheng, DAI Jiu-lan, HOU Hong. Distribution and Risk Assessment of Polycyclic Aromatic Hydrocarbons in Soils in Hunpu, Liaoning, China[J]. Research of Environmental Sciences, 2014, 27(5): 505-512. doi: 10.13198/j.issn.1001-6929.2014.05.08
Citation: ZHANG Juan, FAN Shu-kai, DU Xiao-ming, YANG Jun-cheng, DAI Jiu-lan, HOU Hong. Distribution and Risk Assessment of Polycyclic Aromatic Hydrocarbons in Soils in Hunpu, Liaoning, China[J]. Research of Environmental Sciences, 2014, 27(5): 505-512. doi: 10.13198/j.issn.1001-6929.2014.05.08

浑蒲灌区土壤中多环芳烃的分布及生态响应

doi: 10.13198/j.issn.1001-6929.2014.05.08
基金项目: 国家重点实验室开放基金项目(SKLECRA2013OFP04);博士后面上基金项目(2013M530686);国家重点基础研究计划(973)项目(2013CB127406)

Distribution and Risk Assessment of Polycyclic Aromatic Hydrocarbons in Soils in Hunpu, Liaoning, China

  • 摘要: 因污水灌溉、大气沉降和油井的直接输入可能导致浑蒲灌区土壤中的w(PAHs)升高. 沿灌渠走向选取了8个采样点和1个对照点,分析了不同深度的土壤中w(PAHs)和表层土壤中微生物PLFAs(磷脂脂肪酸)的组成. Spearman分析表明,除了芴和蒽,其他PAHs、2~6环PAHs和总PAHs的质量分数均与土壤深度呈显著负相关. 油井附近的旱田土壤中w(PAHs)较高〔Ⅰ-2U采样点为(645.77±204.21)μg/kg,Ⅰ-6U采样点为(660.39±208.83)μg/kg〕;浑蒲灌区土壤中的PAHs以低环数的菲〔(61.92±13.72) μg/kg〕、蒽〔(39.11±10.68) μg/kg〕和芴〔(31.12±8.14) μg/kg〕为主;由于淋洗作用,水田土壤中w(PAHs)明显低于旱田. 相比对照点,浑蒲灌区土壤中微生物量降低,但微生物多样性增加. 通过对PLFAs的主成分和聚类分析,受油井影响的水田(Ⅰ-1P、Ⅰ-5P采样点)与旱田(Ⅰ-2U和Ⅰ-6U采样点)聚在一起,与对照点距离较远,说明油井附近水田和旱田的微生物结构与对照点存在显著差异,二者同时受到了油田的影响,相应的生态功能也会受到同样的影响. 尽管水田土壤中w(PAHs)明显低于旱田,但其土壤微生物结构也明显受到了石油污染的影响,而且水田地下水健康风险增加,因此建议关注水田风险,并为水田和旱田制订不同的PAHs土壤基准值.

     

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出版历程
  • 收稿日期:  2013-05-23
  • 修回日期:  2013-11-14
  • 刊出日期:  2014-05-25

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