龙滩水电工程库区土壤中汞在水体中的迁移和平衡  

The Movement and Equilibrium of Mercury from Soil to Waterbody in the Reservoir Area of the Longtan Water and Electricity Engineering

作　　者：张淑蓉[1] 李伟[1] 

机构地区：[1]重庆医科大学药学院,重庆400016

出　　处：《三峡环境与生态》2011年第4期4-6,22,共4页Environment and Ecology in the Three Gorges

摘　　要：对龙滩水电工程库区沉积物对重金属Hg2+的吸附效应和解吸效应进行了研究,通过L9(34)正交实验,探讨了沉积物中有机物含量、水体的pH值和温度对吸附效应的影响,结论是:影响沉积物对Hg2+的吸附的主要因素是水体的pH值其次是沉积物中有机物的量,沉积物中Hg2+释放量达到平衡的时间为1～2天。The adsorption effect and desorption effect of sediments in the reservoir area of Longtan Water and Electricity Engineering on mercury are discussed. By the L9（34） orthogonal experiment, the influences of organic content in the sediment、waterbody pH and temperature on the adsorption effect are analysed. The conclusions are reached：the primary influential factors that sediments adsorb mercury are pH, then organic content in the sediment. the equilibrium time for Hg2＋ release in the sediment is 1～2 days.

关 键 词：汞 沉积物 吸附 解吸 

分 类 号：X52[环境科学与工程—环境工程]