Phytotoxicity assessment of phenanthrene, pyrene and their mixtures by a soil-based seedling emergence test  

作　　者：SONGYu-fang GONGPing ZHOUQi-xing SUNTie-heng 

机构地区：[1]KeyOpenLaboratoryofEcologicalProcesses,InstituteofAppliedEcology,ChineseAcademyofSciences,Shenyang110016,China／／LaboratoryofEnvironmentalEngineering,ShenyangUniversity,Shengyang110044,China

出　　处：《Journal of Environmental Sciences》2005年第4期580-583,共4页环境科学学报（英文版）

基　　金：TheNationalBasicResearchProgram(973)ofChina(No.2 0 0 4CB41850 3) ,theNationalNaturalScienceFoundationofChina(No.2 0 3370 10,2 0 277041)andtheOverseaScholarsFoundationoftheInstituteofAppliedEcology,ChineseAcademyofSciences

摘　　要：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.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.

关 键 词：PHENANTHRENE PYRENE PHYTOTOXICITY seedling emergence root length combined effects SOIL 

分 类 号：S153.61[农业科学—土壤学] X53[农业科学—农业基础科学]