2,2′,4,4′-四溴联苯醚(BDE-47)对4种海洋微藻的急性毒性 |
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引用本文: | 李卓娜,孟范平,赵顺顺,姚瑞华. 2,2′,4,4′-四溴联苯醚(BDE-47)对4种海洋微藻的急性毒性[J]. 生态毒理学报, 2009, 4(3): 435-439 |
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作者姓名: | 李卓娜 孟范平 赵顺顺 姚瑞华 |
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作者单位: | 中国海洋大学 海洋环境与生态教育部重点实验室,青岛266100 |
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基金项目: | 中国海洋大学引进人才科研启动经费项目(No. HD1999016) |
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摘 要: | 多溴联苯醚(PBDEs)是一类具有生态风险性的新型持久性有机污染物,其中BDE-47是对生物和人体毒性最强的PBDEs同系物之一.选择4种海洋微藻(海水小球藻、牟氏角毛藻、中肋骨条藻和赤潮异弯藻),采用概率单位-浓度对数法研究了BDE-47对海洋微藻的急性毒性效应(BDE-47浓度梯度设置为0、0.1、1、5、10、50μg·L-1).结果显示,BDE-47对海水小球藻、牟氏角毛藻、中肋骨条藻和赤潮异弯藻的96h半效应浓度(96hEC50)分别为0.79、1.52、1.99和2.25μg·L-1,表明BDE-47对海洋微藻属于极高毒性物质.
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关 键 词: | 2,2′,4,4′-四溴联苯醚(BDE-47) 海洋微藻 急性毒性 EC50 |
收稿时间: | 2008-10-06 |
修稿时间: | 2008-11-20 |
Acute Toxic Effects of 2,2',4,4'-Tetrabromodiphenyl Ether(BDE-47)on Four Marine Microalgae |
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Abstract: | Polybrominated diphenyl ethers(PBDEs)are anthropogenic environmental contaminants that are considered as "new"or"emergent"pollutants.Thereinto,BDE-47 is high toxic to organisms and human.The acute toxic effects of BDE-47 on four marine microalgae(Chlorella autotrophica,Chaetoceros muelleri,Skeletonema costatum and Heterosigam akashiwo)were studied through the growth curve of algae.The concentration gradient of BDE-47 was 0,0.1,1,5,10,50μg·L-1.Results showed that the 96-h median effective concentrations(96h EC50)of BDE-47 for Chlorella autotrophica,Chaetoceros muelleri,Skeletonema costatum and Heterosigam akashiwo were 0.79、1.52、1.99 and 2.25μg·L-1,respectively.The results indicate that BDE-47 is highly toxic to marine microalgae. |
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Keywords: | BDE-47 marine microalgae acute toxicity EC50 |
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