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引用本文:浩云涛,李建宏,潘欣,马宇翔,王雪锋.椭圆小球藻(Chlorella ellipsoidea)对4种重金属的耐受性及富集.湖泊科学,2001,13(2):158-162. DOI:10.18307/20010209
HAO Yuntao,LI Jianhong,PAN Xin,MA Yuxiang,WANG Xuefeng.Tolerance of Chlorella ellipsoidea and Its Removal of Heavy Meta. J. Lake Sci.2001,13(2):158-162. DOI:10.18307/20010209
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椭圆小球藻(Chlorella ellipsoidea)对4种重金属的耐受性及富集
浩云涛, 李建宏, 潘欣, 马宇翔, 王雪锋
南京师范大学生命科学学院, 南京 210097
摘要:
分离筛选获得了一株高重金属抗性的椭圆小球藻(Chlorella ellipsoidea),并研究了不同浓度的重金属铜、锌、镍、镉对该藻生长和叶绿素a含量的影响及其对重金属离子的吸收富集作用.结果显示,该藻对Zn2+和Cd2+具有很高的耐受性.对四种重金属的耐受能力依次为锌 > 镉 > 镍 > 铜.其叶绿素a含量与重金属离子浓度呈明显负相关.该藻对重金属具有很好的去除效果,经15μmol/L Cu2+、300μmol/L Zn2+、100μmol/L Ni2+、30μmol/L Cd2+浓度72h处理,去除率分别达到40.93%、98.33%、97.62%、86.88%,可应用于含重金属废水的处理
关键词:  椭圆小球藻  重金属  耐受性  富集
DOI:10.18307/20010209
分类号:
基金项目:江苏省教委基金资助项目(98KJD180002)
Tolerance of Chlorella ellipsoidea and Its Removal of Heavy Meta
HAO Yuntao, LI Jianhong, PAN Xin, MA Yuxiang, WANG Xuefeng
Department of Biology, Nanjing Normal University, Nanjing 210097 P. R. China
Abstract:
A st rain of Chlorella ellipsoidea with high tolerance to heavy metals was isolated. Grow th and heavy metals removal were studied on this alg a exposed to different heavy metal concent rations.The ef fect of heavy metal on grow th indicated that cells can live in higher Zn2+ and Cd2+ concent rations.The tolerant sequence to 4 kinds of metals for C.ell ipsoidea was Zn2+ > Cd2+ > Ni2+ > Cu2+.The content of chlo rophyll a decreased with the increase of heavy metal concent rations. In this ex periment, C.ellipsoidea also show ed its rather st rong ability to remove heavy metals from the medium.After 72-hour treatment, the removal rates of metals were 40.93%, 98.33%, 97.62%and 86.88% respectively, for 15 μmol/L Cu2+, 300μmol/L Zn2+, 100μmol/L Ni2+ and 30μmol/L Cd2+.These results suggested that the C.ellipsoidea strain could be applied to the treatment of heavy metal wastewater.
Key words:  Chlorella ellipsoidea  heavy metal  tolerance  removal
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