摘要
研究了外源可溶性稀土进入土壤后的形态分布及形态转化的时间进程.外源稀土进入土壤(华北潮土)后迅速向各个形态转化,实验进行了60d,稀土形态在此期间的变化结果表明:交换态迅速下降;碳酸盐结合态的变化情况与交换态基本相同,只是下降的幅度较交换态小;铁锰氧化物结合态先微弱地上升,然后逐步下降;有机结合态则先稳定再逐步升高,外源稀土可在此态积累;残渣态在实验期内基本稳定,无明显变化.
In this paper, speciation distribution and transformation of added soluble rare earth elements, has been studied. The rare earth elements adding to soils was rapidly transformed to other fractions. As time went on, soluble exchangeable rare earth elements decreased rapidly. Organic complexed rare earth elements remained unchanged firstly and then increased. Fe/Mn oxide bounded fraction initially rose, but sequently decreased, showed a peak. The residual fraction was stable.
出处
《环境化学》
CAS
CSCD
北大核心
1999年第5期393-397,共5页
Environmental Chemistry
基金
国家自然科学基金资助项目(28890280-1)
