| 湿地水环境中采集的生物膜吸附铅和镉的特性 |
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| 引用本文： | 董德明,李鱼,花修艺,张菁菁,杨帆.湿地水环境中采集的生物膜吸附铅和镉的特性[J].环境科学,2003,24(1):131-134. |
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| 作者姓名： | 董德明 李鱼 花修艺 张菁菁 杨帆 |
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| 作者单位： | 吉林大学环境科学与工程系,长春,130023,E-mail:dmdong@mail.,jlu.,edu.,cn |
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| 基金项目： | 中国科学院长春地理研究所湿地过程与环境开放实验室基金资助. |
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| 摘 要： | 利用向海自然保护区湿地水环境中直接采集的生物膜进行了铅、镉的吸附实验发现,Freundlich和Langmuir方程均可描述生物膜吸附铅、镉的热力学过程.在所研究的浓度范围内,生物膜吸附铅的能力(1.55～8.25μmol/g)大于吸附镉(0.66～3.03μmol/g)的能力,而且随着生物膜浓度的增加,生物膜吸附铅、镉的最大吸附量呈下降趋势,并具有显著的相关性(n=5,p=0.10,0.05).
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| 关 键 词： | 湿地水环境 生物膜 铅 镉 吸附 |
| 文章编号： | 0250-3301(2003)01-04-0131 |
| 收稿时间： | 2002/1/16 0:00:00 |
| 修稿时间： | 2002年1月16日 |
Characteristics of Pb and Cd Adsorption to Surface Coatings Sampled in the Aquatic Environment of Wetland |
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| Dong Deming,Li Yu,Hua Xiuyi,Zhang Jingjing and Yang Fan.Characteristics of Pb and Cd Adsorption to Surface Coatings Sampled in the Aquatic Environment of Wetland[J].Chinese Journal of Environmental Science,2003,24(1):131-134. |
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| Authors: | Dong Deming Li Yu Hua Xiuyi Zhang Jingjing and Yang Fan |
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| Institution: | Department of Environmental Science and Engineering, Jilin University, Changchun 130023. dmdong@mail.jlu.edu.cn |
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| Abstract: | Pb and Cd adsorption to surface coatings sampled directly in Xianghai was carried out. It was found that both Freundlich and Langmuir isotherms could be used to describe Pb and Cd adsorption to surface coatings, and adsorption of Pb to surface coatings was greater(1.55-8.25 mumol/g) than that of Cd (0.66-3.03 mumol/g). Meanwhile, the maximum adsorption of Pb and Cd to surface coatings decreased in increasing of contents of surface coatings with significant correlation (n = 5, p = 0.10, 0.05). |
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| Keywords: | aquatic environments in wetland surface coatings lead cadmium adsorption |
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