土壤吸附铬的特性及影响因素研究进展

铬污染问题越来越突出,尤其是铬渣的堆存造成严重的土壤铬污染。介绍了铬进入土壤后的存在形态及化学行为,论述了土壤对Cr(Ⅲ)和Cr(Ⅵ)的吸附特征,着重讨论了土壤吸附铬的影响因素。铬在土壤中的吸附是一个复杂的过程,受多方面因素的影响,土壤对铬的吸附依赖于土壤的类型、土壤物理化学性质,如土壤的矿物特性、有机组成pH、Eh、等,也与外加阴阳离子、有机质等有关。研究土壤吸附铬的影响因素为土壤铬污染治理提供科学依据,今后的研究可结合周围环境对铬污染的影响展开。

Research Progress on Soil Adsorption Characteristics of Chromium and Impact Factors

The problem of chromium pollution was more and more prominent in recent years, especially chromium pollution of soil caused by stockpiled chromium slag. This paper described the morphology and chemical behavior of chromium when it entered into the soil. The soil adsorption characteristics of Cr (III) and Cr (VI) were discussed, and the impact factors of the soil adsorption of chromium were introduced in detail. The adsorption of chromium in the soil was a complex process, which was affected by various factors. The adsorption of chromium in soil depended on soil types, soil physical and chemical properties, such as soil mineralogy, organic composition, pH, Eh and so on. The adsorption was related to added cation, anion and organic matter. The research of impact factors about soil adsorption of chromium will provide scientific basic for chromium pollution control. The effect of surrounding environment on chromium pollution can be considered into the future research.