湿地水环境中生物膜吸附铅、镉能力的研究  

Comparison of Pb and Cd Adsorption to Surface Coatings Developed in the Aquatc Environment of Wetland

作　　者：李鱼[1] 董德明[1] 花修艺[1] 张菁菁[1] 杨帆[1] 邱立民[1] 

机构地区：[1]吉林大学环境与资源学院,吉林长春130023

出　　处：《地理科学》2002年第4期445-448,共4页Scientia Geographica Sinica

基　　金：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

摘　　要：利用向海自然保护区不同类型湿地水体培养的生物膜进行了铅、镉的吸附实验 ,结果表明 ,不同湿地水环境培养的生物膜吸附铅、镉的热力学数据可以用Langmuir等温吸附曲线来描述 ,各水体生物膜吸附铅、镉的能力存在很大的差异 ,吸附铅的能力大约比吸附镉的能力大一个数量级 ,且吸附铅、镉的能力与膜上锰、铁氧化物的含量有显著的相关性。Pb and Cd adsorption to surface coatings, which was developed in different waters in Xianghai Natural Preservation Areas, was carried out. Langmuir isotherm was used to describe Pb and Cd adsorption to surface coatings with significant correlation ( n =6, p =0.01). It was also found that the adsorption of Pb to surface coatings is greater than that of Cd, and the maximum adsorption of Pb and Cd to surface coatings is closely related to the contents of Mn and Fe oxides on surface coatings.

关 键 词：湿地水环境 生物膜 铅 镉 吸附 水体生物 金属氧化物 重金属 

分 类 号：X503.2[环境科学与工程—环境工程]