| 条纹小环藻对Cu^2＋、Zn^2＋耐受力和吸附作用的研究 |
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| 引用本文： | 黄翔鹄,魏少红,周美华.条纹小环藻对Cu^2＋、Zn^2＋耐受力和吸附作用的研究[J].台湾海峡,2011,30(1):36-42. |
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| 作者姓名： | 黄翔鹄 魏少红 周美华 |
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| 作者单位： | 1. 东华大学环境科学与工程学院,上海,201620;广东海洋大学水产学院,广东,湛江,524025
2. 东华大学环境科学与工程学院,上海,201620 |
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| 基金项目： | 国家科技支撑计划资助项目，中国科技部农业科技成果转化资金资助项目 |
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| 摘 要： | 研究了条纹小环藻（Cyclotella striata）对Cu2＋和Zn2＋的耐受力、吸附率和吸附量的作用规律.结果表明：Cu2＋和Zn2＋对条纹小环藻的生长影响显著（p〈0.05）,随着Cu2＋、Zn2＋含量的升高,其对条纹小环藻生长的抑制作用增大;当Cu2＋和Zn2＋的含量分别高于4.00×10-3、0.01 mg/dm3时,其对条纹小环藻的生长几乎没有影响;Cu2＋和Zn2＋对条纹小环藻生长的半抑制含量分别为0.26、11.17 mg/dm3.Cu2＋含量为1.00 mg/dm3和Zn2＋含量为50.00 mg/dm3的组合,对条纹小环藻生长的抑制率达72.28%,Cu2＋对条纹小环藻的毒性大于Zn2＋.条纹小环藻对Cu2＋、Zn2＋吸附效果良好,当藻细胞含量为2.45×107cells/dm3时,对Cu2＋的吸附率为63.00%;当藻细胞含量为1.75×107cells/dm3时,对Zn2＋的吸附率为60.52%;条纹小环藻对Cu2＋和Zn2＋的吸附量分别为9.26 mg/g（21.30×10-9mg/cell）和20.06 mg/g（46.15×10-9mg/cell）时,Cu2＋和Zn2＋对条纹小环藻不会产生明显毒性.
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| 关 键 词： | 海洋生物学 条纹小环藻 耐受力 吸附率 抑制率 吸附量 毒性 |
Absorption and toleration of Cu2+ and Zn2+ by Cyclotella striata |
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| HUAN Xiang-hu,WEI Shao-hong,ZHOU Mei-hua.Absorption and toleration of Cu2+ and Zn2+ by Cyclotella striata[J].Journal of Oceanography In Taiwan Strait,2011,30(1):36-42. |
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| Authors: | HUAN Xiang-hu WEI Shao-hong ZHOU Mei-hua |
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| Institution: | 1.School of Environmental Science ＆ Engineering,Donghua University,Shanghai 201620,China;2.Fisheries College,Guangdong Ocean University,Zhanjiang 524025,China) |
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| Abstract: | The effects of tolerance,absorption rate and absorption quantity of Cu2＋ and Zn2＋ by Cyclotella striata were studied.The results showed that Zn2＋ and Cu2＋ have significant effects on the growth of Cyclotella striata（p0.05）.Specifically,the growth of the algae increased in response to increasing concentrations of Cu2＋ and Zn2＋.However,low concentrations of Cu2＋（4.00×10-3 mg/dm3） and Zn2＋（0.01 mg/dm3） had little effect on the growth of Cyclotella striata.The EC50 of Cu2＋ and Zn2＋ were 0.26 mg/dm3 and 11.17 mg/dm3,respectively.The combination of Cu2＋ and Zn2＋ produced the highest inhibition（72.28%） when 1.00 mg/dm3 of Cu2＋ and 50.00 mg/dm3 of Zn2＋ were added to the culture medium.The Cu2＋ was more toxic than Zn2＋.The absorption rate for Cu2＋ was 63.00% when the cell abundance was 2.45×107cells/dm3,while the absorption rate for Zn2＋ was 60.52% when the cell abundance was 1.75×107cells/dm3;these rates are equivalent to 9.26 mg/g（21.30×10-9mg/cell） and 20.06 mg/g（46.15×10-9mg/cell）,respectively.No toxic effects were observed at these absorption rates. |
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| Keywords: | marine biology Cyclotella striata tolerance absorption rate inhibition ratio absorption quantity toxicity |
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