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Discrimination of rare earth element geochemistry and co-occurrence in sediment from Poyang Lake, the largest freshwater lake in China

文献类型：期刊论文

作者Wang, Lingqing2,3; Han, Xiaoxiao2,3; Liang, Tao2,3; Guo, Qingjun2,3; Li, Jing2,3; Dai, Lijun2; Ding, Shiming1,3
刊名CHEMOSPHERE
出版日期2019-02-01
卷号217页码:851-857
关键词Rare earth element Sediment Geochemistry Co-occurrence Lake
ISSN号0045-6535
DOI10.1016/j.chemosphere.2018.11.060
通讯作者Wang, Lingqing(wanglq@igsnrr.ac.cn)
英文摘要Geochemical distribution of trace elements in sediments could reflect the impact of anthropogenic activities on environmental changes in aquatic ecosystems. In this study, rare earth elements (REEs) were used as geochemical tracers to study the environmental processes in a complex and dynamic aquatic environment. Both surface and core sediment samples were collected from Poyang Lake, the largest freshwater lake located in the middle-low region of the Yangtze River. Sediment samples were analyzed for their respective REE spatial distributions, fractionation, and co-occurrence patterns. The inner relationships and geochemistry characters of REEs were assessed by geostatistics and co-occurrence network analysis. Results indicated that total REE concentrations in the sediments from Poyang Lake ranged from 145.1 to 351.1 mu g g(-1), with an average concentration of 254.0 mu g g(-1). Light rare earth element (LREE, La - Sm) enrichment was evident in all sediment samples, indicating the effects of river-lake interactions and the contributions from terrestrial inputs. The negative Ce and Eu anomalies were found in most sediment samples, indicating the differentiation between Ce, Eu, and other REEs in the processes of sediment transportation and deposition. Collectively, the identification of the major contamination sources of REEs in sediment, analyzed by the patterns of the co-occurrence networks and REE fractionation, revealed that the REEs in sediments from Poyang Lake originated both natural and anthropogenic sources and were disturbed by the impact of anthropogenic activities. (C) 2018 Elsevier Ltd. All rights reserved.
WOS关键词CHANGJIANG YANGTZE ; RISK-ASSESSMENT ; STREAM WATERS ; HEAVY-METALS ; PORE WATERS ; IN-SITU ; RIVER ; PHOSPHORUS ; PATTERNS ; FRACTIONATION
资助项目National Natural Scientific Foundation of China[41571473] ; National Natural Scientific Foundation of China[41401591] ; Cultivation, Construction and Service Project of the Institute of Geographical Sciences and Natural Resources Research (IGSNRR), Chinese Academy of Sciences[TSYJS-01] ; National Key Project for Basic Research[2012CB417004]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000456223500093
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Scientific Foundation of China ; Cultivation, Construction and Service Project of the Institute of Geographical Sciences and Natural Resources Research (IGSNRR), Chinese Academy of Sciences ; National Key Project for Basic Research
源URL[http://ir.igsnrr.ac.cn/handle/311030/50519]  
专题中国科学院地理科学与资源研究所
通讯作者Wang, Lingqing
作者单位1.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Lingqing,Han, Xiaoxiao,Liang, Tao,et al. Discrimination of rare earth element geochemistry and co-occurrence in sediment from Poyang Lake, the largest freshwater lake in China[J]. CHEMOSPHERE,2019,217:851-857.
APA Wang, Lingqing.,Han, Xiaoxiao.,Liang, Tao.,Guo, Qingjun.,Li, Jing.,...&Ding, Shiming.(2019).Discrimination of rare earth element geochemistry and co-occurrence in sediment from Poyang Lake, the largest freshwater lake in China.CHEMOSPHERE,217,851-857.
MLA Wang, Lingqing,et al."Discrimination of rare earth element geochemistry and co-occurrence in sediment from Poyang Lake, the largest freshwater lake in China".CHEMOSPHERE 217(2019):851-857.

入库方式： OAI收割

来源：地理科学与资源研究所

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