| 表面活性剂对老化土壤中PAHs的生物有效性的影响 |
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| 引用本文： | 吕正勇,杨兴伦,王 芳,谷成刚,蒋 新. 表面活性剂对老化土壤中PAHs的生物有效性的影响[J]. 土壤, 2012, 44(3): 436-443 |
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| 作者姓名： | 吕正勇 杨兴伦 王 芳 谷成刚 蒋 新 |
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| 作者单位： | 1. 土壤与农业可持续发展国家重点实验室(中科院南京土壤研究所),南京210008;中国科学院研究生院,北京100049
2. 土壤与农业可持续发展国家重点实验室(中科院南京土壤研究所),南京,210008 |
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| 基金项目： | 国家自然科学基金项目（41030531，40801117）、中科院知识创新工程重要方向项目（KZCX2-YW-Q02）和江苏省自然科学基金项目（BK2008497）资助 |
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| 摘 要： | 采用聚2,6-二苯基对苯醚(poly(2,6-diphenyl-p-phenylene oxide),Tenax-TA)提取和蚯蚓(Eisenia Fetida)富集实验研究曲拉通-100(聚乙二醇辛基苯基醚,Triton X-100)、吐温-80(聚氧乙烯脱水山梨醇油酸酯,Tween-80)和羟丙基-β环糊精(HPCD)表面活性剂对老化农田土壤中多环芳烃(PAHs)可提取组分以及生物有效性的影响。结果显示,表面活性剂可以显著增加PAHs的可提取性和在蚯蚓体内的蓄积浓度;和对照相比,增加可提取性42.3%~269%,蚯蚓体内的蓄积量增加10%~340%。研究表明在使用表面活性剂进行土壤修复时老化PAHs类污染物可能重新释放到环境中并带来环境风险。
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| 关 键 词： | 多环芳烃 生物有效性 Tenax提取 生物蓄积 风险评价 |
Effects of surfactant on bioavailability of aged PAHs in soil |
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| LV Zheng-yong,YANG Xing-lun,WANG Fang,GU Cheng-gang,JIANG Xin. Effects of surfactant on bioavailability of aged PAHs in soil[J]. Soils, 2012, 44(3): 436-443 |
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| Authors: | LV Zheng-yong YANG Xing-lun WANG Fang GU Cheng-gang JIANG Xin |
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| Affiliation: | 1,2(1 State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science,Chinese Academy of Sciences),Nanjing 210008,China; 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Triton X-100, Tween-80 and HPCD were added to an aged agricultural soil to prepare spiked soil under different concentrations, and Tenax-TA was used to extract polycyclic aromatic hydrocarbons from the spiked soil to assess the PAHs bioavailability to earthworm (Eisenia Fetida). The results showed that surfactants could significantly enhance the concentration of the PAHs in Tenax-TA extraction and earthworm accumulation. Compared with the control experiment, PAHs concentration by Tenax-TA extraction and earthworm accumulation in the presence of surfactant increased by 42.3% - 269% and 10% - 340% respectively. Surfactant-enhanced remediation of contaminated soil might release the solidified and stabilized PAHs into the environment and increase the environmental risk. |
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| Keywords: | PAHs bioavailability Tenax extraction Bioaccumulation Risk assessment |
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