Phytotoxicity assessment of phenanthrene, pyrene and their mixtures by a soil-based seedling emergence test
查看参考文献20篇
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文摘
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Seedling emergence tests were conducted in a meadow brown soil using five plant species ( i. e., Chinese cabbage, green onion, tomato, turnip and wheat) to determine the phytotoxicity of phenanthrene, pyrene and their mixtures. The soil was amended with up to 1000 mg/kg soil of phenanthrene or 600 mg/kg soil of pyrene. Seedling emergence and root growth were measured. The results indicated that root elongation was more sensitive than seedling emergence. Root length decreased with increasing phenanthrene or pyrene concentrations( p ≤ 0.05). Phenanthrene was more phytotoxic than pyrene. The lowest observable adverse effect concentration(LOAEC) was 10 mg/kg for phenanthrene when tested with green onion, and 50 mg/kg for pyrene when tested with wheat. Among the five species,wheat was found to be the most sensitive. When amended jointly at or below their respective LOAEC, phenanthrene and pyrene produced a synergistic toxic effect. |
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来源
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Journal of Environmental Sciences
,2005,17(4):580-583 【核心库】
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关键词
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phenanthrene
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pyrene
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phytotoxicity
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seedling emergence
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root length
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combined effects
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soil
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地址
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1.
Institute of Applied Ecology, Chinese Academy of Sciences, Key Open Laboratory of Ecological Processes, CAS, 辽宁, Shenyang, 110016
2.
Analytical Services Inc.,3909 Halls Ferry Road, USA
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1001-0742 |
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学科
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环境科学基础理论 |
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基金
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国家973计划
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国家自然科学基金
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中国科学院沈阳应用生态研究所项目
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文献收藏号
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CSCD:2003260
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