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| 巢湖的稀土元素地球化学特征 | |
| 引用本文： | 朱兆洲,王中良,高博,王仕禄.巢湖的稀土元素地球化学特征[J].地球化学,2006,35(6):639-644. |
| 作者姓名： | 朱兆洲 王中良 高博 王仕禄 |
| 作者单位： | 1. 天津师范大学水资源与水环境重点实验室,天津,300387;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,地球化学研究所,环境地球化学国家重点实验室,贵州,贵阳,550002 3. 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;云南大学,资源环境与地球科学学院,云南,昆明,650091 |
| 基金项目： | 中国科学院知识创新工程项目，国家重点基础研究发展计划(973计划)，国家自然科学基金 |
| 摘 要： | 采用液-液萃取法和ICP-MS测试技术对巢湖的溶解态稀土元素进行了分析。结果表明,巢湖的溶解态稀土的含量与世界淡水相当,丰水期的样品含量高于其他季节。pH值和悬浮物、胶体是控制巢湖水体中溶解态稀土含量的主要因素。巢湖的溶解态稀土的分布模式以平坦型为主,少数呈现重稀土富集。丰水期和枯水期的溶解态稀土的(La/Yb)N值从西半湖区到东半湖区呈现有规律性的逐渐增大,并且丰水期的(La/Yb)N值低于枯水期。在富营养化湖泊中,胶体和水生生物可能是造成这一现象的主要原因。 |
| 关 键 词： | 稀土元素 pH值 胶体 悬浮物 富营养化 巢湖 |
| 文章编号： | 0379-1726(2006)06-0639-06 |
| 收稿时间： | 2005-12-11 |
| 修稿时间： | 2006-04-30 |
Geochemical characteristics of rare earth elements in Lake Chaohu, East China |
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| ZHU Zhao-zhou,WANG Zhong-liang,GAO Bo,WANG Shi-lu.Geochemical characteristics of rare earth elements in Lake Chaohu, East China[J].Geochimica,2006,35(6):639-644. | |
| Authors: | ZHU Zhao-zhou WANG Zhong-liang GAO Bo WANG Shi-lu |
| Institution: | 1. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China; 2. Graduate School of Chinese Academy of Sciences, Beijing 100049, China; 3. College of Resource, Environment and Earth Sciences, Yunnan University, Kunming 650091, China |
| Abstract: | The dissolved rare earth elements(REEs)in the aquatic environment of Lake Chaohu were determined by inductively coupled plasma mass spectrometry(ICP-MS)after solvent extraction and back-extraction.The results show that the concentrations of dissolved REEs in Lake Chaohu are similar to those in freshwater of the world.Furthermore, these concentrations of dissolved REEs during high-water period are clearly higher than those during low-water season.The concentrations of dissolved REEs are mainly controlled by pH and the concentration of suspended and colloidal particles.The dissolved REEs in most lake waters show flat NASC-normalized REE patterns, but a few samples showing heavy REE enrichment relative to NASC.The values of(La/Yb)N in high-water period and low-water season increase from west to east, and they in high-water period are larger than those in low-water season.These phenomena might be mainly resulted from colloidal particles and hydrophytes in the eutrophication lake. |
| Keywords: | rare earth elements pH colloid suspended particles eutrophication Lake Chaohu |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |