影响土壤吸附重金属Cd的因子概述  

Factors Affecting the Adsorption of Heavy Metal Cd by Soils

作　　者：刘俊峰[1] 祝怡斌[1] 杨晓松[1] 李青[1] 霍汉鑫[1] 苏文湫[1] 朱亦珺[1] 宋爽[1] 董瑞芬 陈斌[1] 鞠丽萍[1] 

机构地区：[1]北京矿冶研究总院,北京100160 [2]中国中元国际工程有限公司,北京100089

出　　处：《价值工程》2015年第21期199-202,共4页Value Engineering

基　　金：国家自然科学基金--青年科学基金项目水环境中铁胶体颗粒对典型工业纳米颗粒的稳定性研究(项目批准号21407009);北京矿冶研究总院科研基金项目-纳米零价铁与生物炭协同稳定化土壤重金属镉污染研究(项目编号YJ-2014-07)的支持

摘　　要：Cd作为重金属污染物中毒性最强的元素之一,已经对我国土壤特别是农田土壤造成了严重污染。由于Cd在土壤环境中有不可降解性,其毒性具有隐蔽性与积累性,如果含Cd的污染物富集在动植物内,就可以通过食物链对人类的健康造成风险。当重金属进入土壤环境中,土壤的性质与水土环境因子会影响土壤与Cd的相互吸附关系,使得Cd在水土环境中的稳定性与迁移复杂多变。因此,本文对土壤与Cd的吸附机理与影响两者相互吸附的水土环境因子进行了综述。As one of the most toxic elements of heavy metals contaminants in soil, Cadmium has led to serious pollution for cultivated soil in China. Since the low bio-degradability, Cadmium could has a high accumulation ability without impacting the growth of plants.Afterwards, Cadmium may has a strong risk and toxicity effect for human through food chain. Once Cadmium appears in soil, the sorption between soil and Cadmium is impacted by the different factors of soil and groundwater parameters, the stability and transportation of Cadmium is also affected. Therefore, the factors（e.g., p H, organic matter content, clay minerals different types of electrolytes and ionic strength, etc.） influencing the sorption behavior between soil and Cadmium is critically reviewed and summarized.

关 键 词：土壤 CD 吸附 水土环境 

分 类 号：S153[农业科学—土壤学]