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《Marine Environmental Science》 2009-02
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Study of inhabitation of NiO nanoparticles to Chlorella sp.

LI Yong-xian,FENG Wei,GONG Ning,SUN Ye-qing,XIONG De-qi(College of Environmental Science and Engineering,Dalian Maritime University,Dalian 116026,China)  
The growth condition and micro-morphology were studied to reveal the inhibition of NiO nanoparticles to Chlorella sp.by contrast with Ni2+.The EC50 value of NiO nanoparticles to Chlorella sp.at 96 h was 31.4 mg/L by the probability unit method,but the EC50 value of Ni2+ was 1.73 mg/l in the same condition.The cell micro-morphology of Chlorella sp.inhibited by NiO and Ni2+ were observered by Scanning Electron Microscopy(SEM) and Transimission Electron Microscopy(TEM).It showed that the cell of Chlorella sp.inhibited by Ni2+ was shrinked,distored and the cell organ was destroyed.However,the one inhibited by NiO partly showed a phenomenon of the cell languishment.The result showed that Ni2+ was far more toxic than NiO nanoparticles.
【Fund】: 国家自然科学基金资助项目(40476046/D0608);; 交通部基础研究项目(2007329225040)
【CateGory Index】: TB383.1
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