| 表生稀土矿区土壤中稀土元素的吸附特征 |
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| 引用本文： | 高效江,章申.表生稀土矿区土壤中稀土元素的吸附特征[J].上海环境科学,1999,18(1):47-49. |
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| 作者姓名： | 高效江 章申 |
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| 作者单位： | 中科院地理研究所 北京100101
(高效江，章申)，中科院地理研究所 北京100101(王立军) |
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| 基金项目： | 国家自然科学基金资助,编号1939200 |
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| 摘 要： | 研究了赣南典型表生稀土矿区土壤中稀土元素的吸附特征及其主要影响因素。结果表明，稀土元素（Ｌａ，Ｙｂ）的吸附过程符合Ｌａｎｇｍｕｉｒ和Ｆｒｅｎｄｌｉｅｃｈ等温方程，稀土绵吸附以可交换吸附为主，ＰＨ值是影响土壤中稀土元素吸附的极重要因素，随着ＰＨ值的增加，稀土吸附量增加，土壤去除有机质后，对稀土的吸附量下降约７．６％；去游离氧化铁后，稀土元素的吸附量增长７．４％，不同阴离子条件下，土壤对稀土元素的吸附
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| 关 键 词： | 稀土元素 吸附 土壤 表生稀土矿区 |
Adsorption of Rare Earth Elements in Soil of Supergence REE Mine |
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| Gao Xiaojiang Zhang Shen Wang Lijun.Adsorption of Rare Earth Elements in Soil of Supergence REE Mine[J].Shanghai Environmental Science,1999,18(1):47-49. |
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| Authors: | Gao Xiaojiang Zhang Shen Wang Lijun |
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| Abstract: | Adsorption of rare earth elements (La, Yb) in soil of a typical supergence REE mine has been studied experimentally. The result showed that the adsorption proceeding of REE is fit for Langmuir and Frendlich equation, the exchangeable adsorption is the main form of REE adsorption ,pH is the important factor to effect adsorption of REE. While pH value increasing, the adsorption amount increased, especially at pH 5.0-6.0. The REE adsorption decreased about 7.6%when organic matter of soil was erased, but it increased about 7.4% when movable Fe-oxides of soil were erased. Effects of anion on REE adsorption have the sequence: SO42- > Cl- > NO3-. |
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| Keywords: | Rare earth elements (REE) Adsorption Soil Supergence REE mine |
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