| 土壤中芘、菲、萘、苯对小麦的生态毒性影响 |
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| 引用本文： | 万寅婧,占新华,周立祥.土壤中芘、菲、萘、苯对小麦的生态毒性影响[J].中国环境科学,2005,25(5):0-0. |
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| 作者姓名： | 万寅婧 占新华 周立祥 |
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| 作者单位： | 南京农业大学资源与环境学院 江苏南京210095 |
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| 基金项目： | 国家自然科学基金资助项目(20377024,30170537) |
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| 摘 要： | 采用生物培养和物理化学试验,研究了芘、菲、萘、苯对土壤中小麦的生态毒性.结果表明,芘对小麦根毒害的敏感区间浓度为0～300mg/kg;土壤中芘的50%小麦根伸长抑制率浓度为500mg/kg.PAHs的生态毒性与其溶解度和结构有关,且随着溶解度的增大和苯环数目的减少而增加.PAHs会降低土壤的土水势,土水势降低的程度随着PAHs溶解度的增大而增大.
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| 关 键 词： | 多环芳烃 小麦 根伸长 发芽 生态毒性 |
| 文章编号： | 1000-6923(2005)05-0563-04 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2005年2月28日 |
Influence of pyrene, phenanthrene, naphthalene and benzene in soil to wheat |
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| WAN Yin-jing,ZHAN Xin-hua,ZHOU Li-xiang.Influence of pyrene, phenanthrene, naphthalene and benzene in soil to wheat[J].China Environmental Science,2005,25(5):0-0. |
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| Authors: | WAN Yin-jing ZHAN Xin-hua ZHOU Li-xiang |
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| Institution: | WAN Yin-jing,ZHAN Xin-hua,ZHOU Li-xiang* |
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| Abstract: | Adopting biological culture and phisico-chemical experiments, the eco-toxicity of pyrene, phenanthrene, naphthalene and benzene of wheat added in a soil was studied. The sensitive range of pyrene poisoning wheat root was 0~300mg/kg, and the concentration of 50% wheat root inhibition rate of pyrene in soil was 500mg/kg. The ecotoxity of PAHs was related with its dissolving degree and structure; and increased with the increase of solubility, and decrease of the benzene ring number. PAHs could lower the flow of water and the lowering degree increased with the increase of the solubility of PAHs. |
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| Keywords: | polycyclic aromatic hydrocarbons wheat root elongation seed germination eco-toxicity |
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