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

doi:10.1016/j.chemosphere.2018.11.060

	Discrimination of rare earth element geochemistry and co-occurrence in sediment from Poyang Lake, the largest freshwater lake in China
	Wang, Lingqing 1,2; Han, Xiaoxiao 1,2; Liang, Tao 1,2; Guo, Qingjun 1,2; Li, Jing 1,2; Dai, Lijun 1; Ding, Shiming 2,3
刊名	CHEMOSPHERE
	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
DOI	10.1016/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.
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关键词	CHANGJIANG YANGTZE ; RISK-ASSESSMENT ; STREAM WATERS ; HEAVY-METALS ; PORE WATERS ; IN-SITU ; RIVER ; PHOSPHORUS ; PATTERNS ; FRACTIONATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000456223500093
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
内容类型	期刊论文
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, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Jiangsu, 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.