Effects of five heavy metals at sub-lethal concentrations on the growth and photosynthesis of Chlorella vulgaris

查看全文 作　　者：OUYANG [1]HuiLing;KONG [1]XiangZhen;HE [1]Wei;QIN [1]Ning;HE [1]QiShuang;WANG [1]Yan;WANG [1]Rong;XU [1]FuLiu

机构地区：[1]Laboratory for Earth Surface Process of Ministry of Education,College of Urban&Environmental Sciences,Peking University,Beijing 100871,China

出　　处：《Chinese Science Bulletin》索引2012年第57卷第25期,共8页

基　　金：supported by the Key Program of National Natural Science Foundation of China (41030529);the National Natural Science Founds for Distinguished Young Scholars (40725004);the National Project for Water Pollution Control (2008ZX07103-005-01);the Specific Scientific Research Funds for Environment Protection Commonweal Section of China(20100932);Doctoral Fund of Ministry of Education of China(20100001110035) 摘　　要：The impact of sub-lethal concentrations(0.05,0.5,5 μmol L 1) of the heavy metals copper(Cu),chromium(Cr),zinc(Zn),cadmium(Cd) and lead(Pb) on the growth and photosynthesis of Chlorella vulgaris was studied during 96 h exposure experiments.The results showed that the effects of these five metals on the growth of Chlorella vulgaris were dependent on both concentration and exposure time.It was found that 5 μmol L 1 treatments of Cu,Cr,Zn,Cd and Pb significantly inhibited the growth of Chlorella vulgaris,and the effect became weaker with an increase in exposure duration.Different effects on chlorophyll fluorescence were found for different metals,with Cu and Cr having an inhibiting effect and Zn and Cd having a promoting effect.The effects of heavy metals upon the growth and photosynthesis of Chlorella vulgaris were independent of each other and not causally related. 关键词：亚致死浓度光合作用小球藻重金属生长镉(CD) 叶绿素荧光金属铜

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Effects of five heavy metals at sub-lethal concentrations on the growth and photosynthesis of Chlorella vulgaris

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