| 用微宇宙法研究稀土元素在富营养化水体中的归趋 |
| |
| 引用本文： | 尹大超,戴乐美.用微宇宙法研究稀土元素在富营养化水体中的归趋[J].环境化学,1998,17(3):《环境化学》-1998年17卷3期-250--25页-《环境化学》-1998年17卷3期-250--25页. |
| |
| 作者姓名： | 尹大超 戴乐美 |
| |
| 作者单位： | [1]南京大学环境科学与工程系 [2]南京大学现代分析中心 |
| |
| 基金项目： | 国家自然科学基金资助项目 |
| |
| 摘 要： | 本文利用静态实验室水生微宇宙的方法研究了轻、中、重三类五种稀土混合物（La,Ce,Sm,Gd,Y）在富营养水体、底泥、浮萍、大型蚤、螺蛳和金鱼中的分布和富集。结果表明,稀土在水生微宇宙各组分中的分布和积累的趋势为轻稀土>中稀土>重稀土。稀土元素在水体中6h后基本趋于平衡,其大部分为底泥所吸附;不同生物对稀土的分布和富集存在着较大的差异,其趋势为浮萍>大型蚤>螺蛳>金鱼。
|
| 关 键 词： | 水生微宇宙 稀土元素 富营养化 水体污染 |
STUDY ON THE FATE OF RARE EARTH ELEMENTS (REEs) IN EUTROPHIC WATERS USING LABORATORY MICROCOSM METHOD |
| |
| Yin Daqiang,Yang Xingye Sun Hao,Wang Xiaorong.STUDY ON THE FATE OF RARE EARTH ELEMENTS (REEs) IN EUTROPHIC WATERS USING LABORATORY MICROCOSM METHOD[J].Environmental Chemistry,1998,17(3):《环境化学》-1998年17卷3期-250--25页-《环境化学》-1998年17卷3期-250--25页. |
| |
| Authors: | Yin Daqiang Yang Xingye Sun Hao Wang Xiaorong |
| |
| Abstract: | A static microcosm was conducted to evaluate the distribution and concentration of REEs (light REEs-La, Ce, Sm, medium REE-Gd, heavy REE-Y) in duckweed ( Spirollela polyrrhiza ), crustacean ( Daphnia margna ) , shellfish ( Bellamya aeruginosa) ,fish(Carassius auratus L. ) ,water column and sediment. The results showed that there ten-ded to be an equilibrium in water column after six hours of REEs' spiking into the microcosm, and the distribution and concentration of REEs in eutrophic water were different from every constituents in microcosm. They showed the increase order; light REEs>medium REE>heavyREE. It was also indicated that the bioconcentrations of REEs in organisms were different as different species, and the order was duckweed> crustacean>shellfish>fish. |
| |
| Keywords: | microcosm REEs distribution and concentration eutrophication |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
