感耦等离子体发射光谱法研究土壤-铁芒萁系统中稀土元素的分布、累积和迁移特征

应用生态学报 ›› 2001, Vol. ›› Issue (6): 863-866.

感耦等离子体发射光谱法研究土壤-铁芒萁系统中稀土元素的分布、累积和迁移特征

魏正贵¹, 宛寿康¹, 张巽¹, 洪法水¹, 赵贵文¹, 陶冶², 汪振立², 谢先求²

1. 中国科学技术大学, 合肥, 230026;
2. 北京大学畅春园60楼4l7, 北京, 100871;
3. 中国科学院高能物理研究所, 北京, 100039

收稿日期:1999-05-28 修回日期:2000-12-18 出版日期:2001-11-25
通讯作者: 魏正贵,男,1972年生,博士研究生,主要从事稀土元素分析和稀土元素生态效应研究,已发表论文7篇,申请专利1项.,现地址:北京大学畅春园60楼4l7,北京100871.
基金资助:
国家自然科基金资助项目(29805003和29271030).

ICP-AES studies on characteristics of distribution,accumulation and transportation of rare earth elements in soil-Dicranopteris dichotoma system

WEI Zhenggui¹, WAN Shoukang¹, ZHANG Xun¹, HONG Fashui¹, ZHAO Guiwen¹, TAO Ye²

1. University of Science and Technology of China, Hefei 230026;
2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039

Received:1999-05-28 Revised:2000-12-18 Online:2001-11-25

摘要/Abstract

摘要： 用感耦等离子体发射光谱法(ICP-AES)测定了江西赣南地区非稀土矿区和处不同稀土矿区内,土壤-铁芒萁系统中La、Ce、Pr、Nd、Sm、Gy、Db、Yb和Y的含量,并对其在土壤剖面层及铁芒萁植物体内的分布、迁移特征进行了研究.结果表明,土壤剖面层的底土层含量最高,但表土层铈相对富集.稀土元素总量(∑REE)在铁芒萁植物体内的分布规律是叶＞根＞茎＞叶柄,单一稀土元素的分布规律各异,La、Ce、Pr、Nd的分布规律表现为:叶＞根＞茎＞叶柄;Sm和Gd在不同采样点表现为叶＞根＞茎＞叶柄或根＞叶＞茎＞叶柄;Dy、Yb和Y均有3种不同的分布模式:叶＞根＞茎＞叶柄、根＞叶＞茎＞叶柄及根＞茎＞叶＞叶柄.稀土元素在铁芒萁体内的迁移过程中,发生了明显的分馏作用,茎、叶柄、叶中的重稀土相对贫乏.

Abstract: The contents of La,Ce,Pr,Nd,Sm,Gd,Dy,Yb and Y in soils and Dicranopteris dichotoma collected from 4 rare earth mining areas and 1 non-mining area in south Jiangxi Province were determined using the inductively coupled plasma atomic emission spectrometry(ICP-AES) method,and the distribution patterns and transportation characteristics of the rare earth elements (REEs) in soil profiles and Dicranopteris dichotoma tissues were discussed.The results showed that the REEs contents in the C horizon the soils were the highest,but Ce was relatively concentrated in A horizon.The total amount of the REEs in Dicranopteris dichotoma tissues was in order of leaf>root>stem>leaf stalk,but the distribution patterns of individual REE were various,ie.,La,Ce,Pr and Nd,leaf>root>stem>leaf stalk,Sm and Gd,leaf>root>stem>leaf stalk or root>leaf>stem>leaf stalk,and Dy,Yb and Y,leaf>root>stem>leaf stalk,root>leaf>stem>leaf stalk,or root>stem>leaf>leaf stalk.The REEs were obviously fractionated in their transportion processes in Dicranopteris dichotoma tissues and heavy REEs in stems,leaf stalks and leaves of the plant were relatively poor.

中图分类号:

Q946.91

魏正贵, 宛寿康, 张巽, 洪法水, 赵贵文, 陶冶, 汪振立, 谢先求. 感耦等离子体发射光谱法研究土壤-铁芒萁系统中稀土元素的分布、累积和迁移特征[J]. 应用生态学报, 2001, (6): 863-866.

WEI Zhenggui, WAN Shoukang, ZHANG Xun, HONG Fashui, ZHAO Guiwen, TAO Ye. ICP-AES studies on characteristics of distribution,accumulation and transportation of rare earth elements in soil-Dicranopteris dichotoma system[J]. Chinese Journal of Applied Ecology, 2001, (6): 863-866.

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