五氯苯酚在武汉东湖底质颗粒物上的吸附研究  

The Adsorption of Pentachlorophenol upon the Substrate Particulate Matter of Donghu Lake

作　　者：谢玲玲[1] 周培疆[1] 刘丽君[1] 李今[2] 贺锋[2] 吴振斌[2] 

机构地区：[1]武汉大学资源与环境科学学院,湖北武汉430079 [2]中国科学院水生生物研究所/淡水生态与生物技术国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（理学版）》2005年第4期448-452,共5页Journal of Wuhan University:Natural Science Edition

基　　金：国家自然科学基金(20177018);淡水生态与生物技术国家重点实验室开放基金资助项目

摘　　要：通过静态吸附实验,研究了五氯苯酚在武汉东湖底质颗粒物上的吸附行为,并考察了pH值、颗粒物浓度、盐度和腐殖酸对吸附行为的影响.结果表明,25 ℃时五氯苯酚在该颗粒物上的吸附行为可用Freundlich吸附等温式描述,在pH值3.0～10.0范围内,五氯苯酚在颗粒物上的平衡吸附量先减小后又缓慢增加;颗粒物浓度在0.1～2.0g·L-1之间变化时,东湖底质颗粒物对五氯苯酚的吸附具有浓度效应;腐殖酸和盐度在一定范围内对五氯苯酚在颗粒物上吸附行为的影响为先促进其平衡吸附量增加,然后这种促进作用趋于缓和.Batch adsorption isotherm experiments of pentachlorophenol （PCP） on the substrate particulate matter of Donghu Lake in Wuhan were carried out in this paper. The results indicate that the adsorption of PCP on the substrate particulate matter of Donghu Lake followed Freundlich isotherm equation at 25 ℃. Furthermore. the effects of the pH value, concentration of the substrate particulate matter, salinity and humic substances on the sorption behaviors of PCP were also studied. With the increase on pH from 3.0 to 10. 0 the equilibrium adsorption capacity of PCP decreased first and then had a slow increasing. When the particulate matter concentration varied over the range of 0. 1-2.0 g·L^-1, the effect of particulate matter concentration followed the solid concentration effects. The salinity and humic substitutes could accelerate the adsorption capacity.

关 键 词：五氯苯酚 武汉东湖 底质颗粒物 吸附 影响因素 

分 类 号：X131.2[环境科学与工程—环境科学]