摘要
水体受重金属污染后其底泥亦成为污染面源。本文结合底泥中重金属的分析方法介绍了其赋存形态,分析讨论了pH值、温度、粒径、盐度、腐殖酸、氧化还原电位、泥水比等因素对底泥吸附及释放重金属的影响,总结了底泥吸附重金属的热力学及动力学、底泥释放重金属的动力学等相关规律,并对底泥中重金属的释放研究及其污染防治工作做出了展望。
Sediments become non - point pollution due to overlying water polluted by heavy metals. In this paper, the spatial distribution .characteristics of heavy metals in sediment are introduced combined with extraction method methods. The influence factors of heavy metals adsorption - release are discussed, such as the pH value, temperature, particle size, salinity, humic acid, redox potential, mud to water ratio, etc. The regularities of heavy metal adsorption -release are summarized, such as adsorption thermodynamics and dynamics, release thermodynamics. Furthermore, the research tendencies of heavy metal release and its pollution controlling are forecast.
出处
《山东化工》
CAS
2012年第12期20-23,共4页
Shandong Chemical Industry
关键词
底泥
重金属
吸附
释放
sediment
heavy metals
adsorption
release
