摘要
河流底质是河流水体的重要组成部分,是污染物的主要归宿场所。重金属主要通过吸附、络合、生物吸收等过程进入河流底质中,河流底质粒径是影响重金属吸附量的重要因素之一,而在有机质含量较高的河流底质中,底质粒径和有机质的吸附作用共同影响着重金属在底质上的吸附量。通过对苏北某城市河流底质进行粒径分级实验和有机质含量测定,研究了底质粒径与重金属(Cd、Cu、Pb、Zn、Cr)含量的关系以及底质中有机质含量对重金属吸附量的影响。
The river＇s sediment is an important part of the water bodies and it is also the main pool of the contamination. The heavy metal comes into the sediment by means of adsorption, complexation, the absorption of organism and so on. The grain size of the sediment＇s particle is one of the important reasons which impacts the adsorption of the heavy metal. But in the sediment with high organic matter, the grain size of the sediment and the adsorption of the organic matter affect the adsorption quantity. The paper ana- lyzed the relation of the sediment＇s grain size and the quantity of the heavy metal and the affect of the quantity of the organic matter in the sediment on the heavy metal adsorption.
出处
《环境科学与管理》
CAS
2008年第5期75-77,95,共4页
Environmental Science and Management
关键词
城市河流
底质
粒径
重金属
有机质
city river
sediment
grain size
heavy metal
organic matter
