多壁碳纳米管存在环境下Pb、Zn对斑马鱼毒性的变化The Change of the Toxicity of Pb and Zn on Zebrafish in the Case of the Existence of Multi-Walled Carbon Nanotubes
刘信勇;朱琳;
摘要(Abstract):
研究了重金属铅、锌对斑马鱼的急性毒性效应及在人工碳纳米材料——多壁碳纳米管存在环境下,铅、锌对斑马鱼毒性的变化.结果显示,随着铅(Pb(NO3)2)、锌(ZnSO4)浓度的增加以及染毒时间的延长,斑马鱼死亡率逐渐增加;单一多壁碳纳米管悬液(10mg·L-1)对斑马鱼无明显毒性效应.Pb和Zn对斑马鱼24h、48h和96h的LC50分别为5.38mg·L-1、3.99mg·L-1、3.83mg·L-1和26.37mg·L-1、21.39mg·L-1、20.62mg·L-1;在多壁碳纳米管存在条件下,二者对斑马鱼24h、48h和96h的LC50分别为2.74mg·L-1、2.26mg·L-1、2.15mg·L-1和21.85mg·L-1、17.17mg·L-1、16.77mg·L-1.多壁碳纳米管存在条件下铅、锌对斑马鱼的LC50显著降低,提示碳纳米材料可能会增加重金属对水生生物的毒性.
关键词(KeyWords): 壁碳纳米管;斑马鱼;铅;锌;毒性效应;LC50
基金项目(Foundation): 高等学校博士学科点专项科研基金(No.20070055033)
作者(Author): 刘信勇;朱琳;
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DOI:
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