摘要
研究了在酸雨影响下,红壤对稀土元素Ce、La、Nd、Pr的吸附和解吸。结果表明,稀土元素在红壤中的吸附等温线符合Langmuir等温吸附式。用酸雨作为解吸剂时,随着酸雨的pH值下降,稀土元素的解吸量升高;稀土元素的解吸率与酸雨的pH值紧密相关,相关方程可用y=a·ebx来描述;稀土元素解吸率的大小顺序为:La>Pr>Ce>Nd。
The effects of acid rain on adsorption and desorption of Rare EarthElements (REEs) in red soil were investigated. The results showed that the characteristics of adsorption isotherms corresponded well with the Langmuir equations. When the acid rain was used as desorption agent, desorption of REEs increasedwith decreasing pH of acid rain. The correlation equation can be described by y=a·ebx. The desorption efficiency of four kinds REEs is in following order: La>Pr>Nd>Pr.
出处
《农业环境保护》
CSCD
北大核心
2002年第2期107-109,共3页
Agro-Environmental Protection
基金
国家自然科学基金资助项目(29890280-1)
