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作 者 ：宋玉芳,周启星,许华夏,任丽萍,宋雪英,龚平

期 刊 ：生态学报 2002年 22卷 11期 页码：1945~1950

关键词：土壤污染；有机污染物；根伸长抑制率；复合污染；

Keywords:soil pollution, organic pollutants, inhibition rate of root elongation, combined pollution,

摘 要 ：测定了草甸棕壤条件下 ,菲、芘、1 ,2 ,4-三氯苯对高等植物 (小麦、白菜、西红柿 )根伸长抑制率以及复合污染毒性效应。结果表明 ,菲、芘、 1 ,2 ,4-三氯苯浓度与植物根伸长抑制率呈显著线性或对数相关 (p=0 .0 5 )。 3种化学品对植物根伸长抑制的强弱顺序为 1 ,2 ,4-三氯苯 >菲 >芘。这与 3种化学品的水中溶解度大小显著相关。小麦是 3种供试植物中对有机污染物最敏感植物。菲、芘、1 ,2 ,4-三氯苯复合污染主表现为协同作用。

Abstract:Ecological bioassays using higher plants were included in a test battery because vegetation is the dominant biological component of terrestrial ecosystem, and they could reflect the toxicity of hazardous chemicals in soils, therefore providing an alternative method for the evaluation of toxic effects such as adverse effects of a bioavailable fraction of pollutants in a complex soil matrix. It is well known that a reduction in toxicity of a complex mixture could not be measured by parent compound disappearan...

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