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| 河流稀土元素地球化学研究进展 | |
| 引用本文： | 王中良,刘丛强,徐志方,韩贵琳,朱建明,张劲.河流稀土元素地球化学研究进展[J].地球科学进展,2000,15(5):553-540. |
| 作者姓名： | 王中良 刘丛强 徐志方 韩贵琳 朱建明 张劲 |
| 作者单位： | 1. 中国科学院地球化学研究所环境地球化学国家重点实验室,贵州,贵阳,550002 2. 中国科学院地质与地球物理研究所,北京,100101 3. Department of Environmental Biology and Chemistry,Faculty of Science,Toyama University,Gofuku 3190,Toyama 930-8555,Japan |
| 基金项目： | 国家杰出青年科学家基金项目!“流体 -岩石反应体系中稀土元素和钇的地球化学”(编号 :4962 5 3 0 4)，攀登计划项目!“地质流 体作用及 |
| 摘 要： | 河流系统中,稀土元素(REE)受区域地质背景、风化作用、溶液化学以及水与颗粒物相互作用等因素的影响发生分异。河流悬浮物显示轻稀土(LREE)适度富集;河水显示重稀土(HREE)富集,或在HREE富集的基础上又有适度的中稀土(MREE)富集;与其它微量元素相比,REE在河水与颗粒物之间有较小的分配系数(K≈10-6);河流沉积物多显示平坦的REE配分模式。 |
| 关 键 词： | 河流 稀土元素 风化 溶液化学 水粒作用 |
| 收稿时间： | 1999-11-08 |
| 修稿时间： | 2000-02-29 |
ADVANCES IN RESEARCH ON GEOCHEMISTRY OF RARE EARTH ELEMENTS IN RIVERS |
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| WANG Zhong-liang,LIU Cong-qiang,XU Zhi-fang,HAN Gui-lin,ZHU Jian-ming,ZHANG Jin.ADVANCES IN RESEARCH ON GEOCHEMISTRY OF RARE EARTH ELEMENTS IN RIVERS[J].Advance in Earth Sciences,2000,15(5):553-540. | |
| Authors: | WANG Zhong-liang LIU Cong-qiang XU Zhi-fang HAN Gui-lin ZHU Jian-ming ZHANG Jin |
| Institution: | 1.State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,CAS,Guiyang550002,China;2.Institute of Geology and Geophysics,CAS,Beijing100101,China;3.Department of Environmental Biology and Chemistry,Faculty of Science,Toyama University,Gofuku3190,Toyama930-8555,Japan |
| Abstract: | Rare earth elements (REE) patterns of dissolved phase, suspended materials and sediments in rivers were established based on data referred from recent studies and our work. There are a number of factors or processes such as basin geology, weathering, solution chemistry and water-particle interaction controlled the geochemical behavior of REE in rivers. These factors and processes induced partition and fractionation of REE between suspended particles and solution. The shale-normalized REE patterns of suspended particles in rivers showed moderate light-REE (LREE) enrichment, and the solution of river waters showed significant heavy-REE (HREE) enrichment or convex curves that middle-REE (MREE) slight enrichment piled upon the HREE enrichment. The partition coefficient of REE between the suspended particles and solution (K≈10-6) was smaller comparing with most of other trace metals in rivers. The sediments in rivers showed a flat shale-normalized REE patterns. |
| Keywords: | River Rare earth elements Weathering Solution chemistry Water particle interaction |
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