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Lithium and its isotopes as tracers of groundwater salinization: A study in the southern coastal plain of Laizhou Bay, China
Qi, Huihui1; Ma, Chuanming1; He, Zekang1,2,3; Hu, Xiaojing1; Gao, Lin1
2019-02-10
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume650Pages:878-890
Corresponding AuthorMa, Chuanming(machuanming@cug.edu.cn)
AbstractIn the southern coastal plain of Laizhou Bay, due to intensive exploitation of groundwater since the early 1970s, the shallow aquifer has been severely influenced by saltwater intrusion, which causes the extraction to shift from shallow to deeper aquifer changing the hydrogeological condition greatly. This study was conducted to investigate the groundwater salinization using hydrochemistry and H, O and Li isotope data. Dissolved Li shows a linear correlation with Cl and Br in seawater, brine and saline groundwater indicating the marine Li source, whereas the enrichment of Li in surface water, brackish and fresh groundwater is impacted by dissolution of silicate minerals. The analyses of hydrochemistry and isotopes (H, O and Li) indicate that brine originated from seawater evaporation, followed by mixing processes and some water-rock interactions; shallow saline groundwater originated from brine diluted with seawater and fresh groundwater; deep saline groundwater originated from seawater intrusion. The negative correlation of delta(7) Li and Li/Na in surface water, brackish and fresh groundwater is contrary to the general conclusion, indicating the slow weathering of silicate minerals and hydraulic interaction between surface water and shallow groundwater in this area. The analyses of hydrochemistry and isotopes (Li, H and O) can well identify the salinity sources and isotope fractionation in groundwater flow and mixing, especially groundwater with high TDS. As both mixing with saltwater and isotope fractionation can explain the combination of high delta(7) Li and low TDS in brackish groundwater, isotope fractionation may limit their use in recognizing salinity sources of groundwater with low TDS. (C) 2018 Elsevier B.V. All rights reserved.
KeywordSouthern coastal plain of Laizhou Bay Groundwater salinization Hydrochemistry Lithium isotope Brine and seawater intrusion
DOI10.1016/j.scitotenv.2018.09.122
WOS KeywordCANADIAN SHIELD BRINES ; WEATHERING PROCESSES ; SEAWATER CHEMISTRY ; WATER-INTRUSION ; STABLE-ISOTOPES ; VOLCANIC-ROCKS ; BORON ISOTOPES ; ORGANIC-ACIDS ; MURRAY BASIN ; LI ISOTOPES
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41572212]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000447092700091
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/52816
Collection中国科学院地理科学与资源研究所
Corresponding AuthorMa, Chuanming
Affiliation1.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Hubei, Peoples R China
2.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Qi, Huihui,Ma, Chuanming,He, Zekang,et al. Lithium and its isotopes as tracers of groundwater salinization: A study in the southern coastal plain of Laizhou Bay, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,650:878-890.
APA Qi, Huihui,Ma, Chuanming,He, Zekang,Hu, Xiaojing,&Gao, Lin.(2019).Lithium and its isotopes as tracers of groundwater salinization: A study in the southern coastal plain of Laizhou Bay, China.SCIENCE OF THE TOTAL ENVIRONMENT,650,878-890.
MLA Qi, Huihui,et al."Lithium and its isotopes as tracers of groundwater salinization: A study in the southern coastal plain of Laizhou Bay, China".SCIENCE OF THE TOTAL ENVIRONMENT 650(2019):878-890.
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