摘要
为了评价碳纳米材料的水生态安全性,以斜生栅藻(Scenedesmus oblignus)和大型蚤(Daphnia magna)为受试生物,研究了单壁碳纳米管(SWCNTs)、多壁碳纳米管(MWCNTs)和富勒烯(C60)3种碳纳米材料水悬浮液对水生生物的毒性效应.结果发现,SWCNTs、MWCNTs和C60对斜生栅藻生长的96hEC50值分别为22.6,15.5,13.1mg/L;对大型蚤活动抑制的48hEC50值分别为1.3,8.7,9.3mg/L.3种碳纳米材料水悬浮液对斜生栅藻的毒性大小无显著性差异(P>0.05);SWCNTs对大型蚤的毒性大于MWCNTs和C60(P<0.05);2种生物对碳纳米纳米材料的敏感性也不同.3种碳纳米材料对2种水生物的毒性大小与氯苯相似.
The toxicity effects of three kind of carbon nano-materials, single wall carbon nanombes （SWCNTs）, multi wall carbon nanotubes （MWCNTs） and fullerenes （C60） water suspended solutions on aquatic organisms were investigated, for evaluating the safety of carbon nano-materials on aquatic ecosystem. A green algae （Scenedesmus obliquus） and an invertebrate （Daphnia magna） were used, following the standard OECD guidelines for the testing of chemicals （i.e. OECD 201,202）. The 96h EC50 of SWCNTs. MWCNTs and C60 on the growth of Scenedesmus obliquus were 22,6, 15.5, 13.1 mg/L, respectively; the 48h immobilization EC50 of SWCNTs, MWCNTs and C60 on Daphnia magna were 1.3, 8.7, 9.3 mg/L, respectively. The toxicity of the three kinds of carbon nanomaterials on these two model aquatic organisms was similar with chlorobenzene. The potential ecological effects of manufactured carbon nanomaterials should not be ignored.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2008年第3期269-273,共5页
China Environmental Science
基金
高等学校博士点基金(20070055033)
关键词
纳米材料
斜生栅藻
大型蚤
毒性效应
碳纳米管
富勒烯
EC50
nanomaterials
Scenedesmusobliquus： Daphniamagna： toxicity effect： carbon nanotubes： fullerenes
EC50
