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地理科学 >

2001 , Vol. 21 >Issue 2: 130 - 134

DOI: https://doi.org/10.13249/j.cnki.sgs.2001.02.130

论文

汉水水系水环境中稀土元素的分布特征

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  • 1. 中国科学院长春地理研究所, 吉林 长春 130021;
    2. 中国科学院, 北京 100864

收稿日期: 2000-06-20

  修回日期: 2001-02-20

  网络出版日期: 2001-03-20

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Distribution Characteristics of Rare Earth Elements in Water, Suspended Solid & Sediment of the Hanshui River

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  • 1. Changchun Institute of Geography, Chinese Academy of Sciences, Changchun, Jilin 130021;
    2. Chinese Academy of Sciences, Beijing 100864

Received date: 2000-06-20

  Revised date: 2001-02-20

  Online published: 2001-03-20

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摘要

系统探讨了汉水水系水相(原水、滤水、悬浮物)、沉积物相中8个稀土元素的含量水平、丰度模式、悬浮物含量对水中元素含量的影响及沉积物粒度对元素的富集与分散作用等。结果表明:Eu、Lu主要以溶解态存在于水相中,而Sm主要存在于悬浮物中;汉水水中稀土元素的含量基本在世界淡水的范围内;湖库悬浮物中稀土元素含量均低于江河悬浮物,悬浮物和细粒沉积物中稀土元素含量相近,序列也基本一致;粒度对汉水沉积物中稀土元素含量的影响不明显;地表径流对水中悬浮物含量和悬浮物中稀土元素含量均有一定影响;稀土元素在汉水悬浮物、沉积物中均有一定程度的富集现象;汉水各相中均以轻稀土为主,重稀土含量较少。

本文引用格式

闫百兴, 何岩 . 汉水水系水环境中稀土元素的分布特征[J]. 地理科学, 2001 , 21(2) : 130 -134 . DOI: 10.13249/j.cnki.sgs.2001.02.130

Abstract

This paper discusses systematically distribution characteristics,content levels,abundance modes, influence of suspended solid on element contents, effect of sediment granularity on enrichment and dispersion of eight rare earth elements in water phase (original water, filtrated water, suspended solid) and sediment phase in the Hanshui River.The results show the following laws. Eu,Lu are dissolved mainly in water column, and Sm is contained mostly in suspended solid;basically, contents of rare earth elements in the Hanshui River are within the range of average that of global fresh water;because of similarity of source and granularity of suspended solid and fine sediment, contents and abundance orders of rare earth elements in them are consistent basically; surface runofff affects on the content of suspended solid and rare earth elements in water. In all kinds of phases, the content of light rare earth elements(LREE) is higher than that of heavy rare earth elements(HREE).

参考文献

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