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Geochemical Behavior of Rare Earth Elements in Saline and Salty Springs From a Carbonate-Evaporite Aquifer in the Northeastern Sichuan Basin, China.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Geochemical Behavior of Rare Earth Elements in Saline and Salty Springs From a Carbonate-Evaporite Aquifer in the Northeastern Sichuan Basin, China.
Συγγραφείς: Guo J; Institute of Water Resources Utilization and Water Environment, School of Architecture and Engineering, Yan'an University, Yan'an, China., Jing Y; Institute of Water Resources Utilization and Water Environment, School of Architecture and Engineering, Yan'an University, Yan'an, China., Wang C; Institute of Water Resources Utilization and Water Environment, School of Architecture and Engineering, Yan'an University, Yan'an, China., Wang M; Qingdao Institute of Marine Geology, China Geological Survey, Qingdao, China.; Observation and Research Station of Seawater Intrusion and Soil Salinization, Laizhou Bay, Ministry of Natural Resources, Qingdao, Shandong Province, China.
Πηγή: Water environment research : a research publication of the Water Environment Federation [Water Environ Res] 2026 Apr; Vol. 98 (4), pp. e70392.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: Wiley Subscription Services on behalf of The Water Environment Foundation Country of Publication: United States NLM ID: 9886167 Publication Model: Print Cited Medium: Internet ISSN: 1554-7531 (Electronic) Linking ISSN: 10614303 NLM ISO Abbreviation: Water Environ Res Subsets: MEDLINE
Imprint Name(s): Publication: Hoboken, NJ : Wiley Subscription Services on behalf of The Water Environment Foundation
Original Publication: Alexandria, VA : The Federation, c1992-
Ιατρικοί όροι (MeSH): Groundwater*/chemistry , Carbonates*/chemistry , Metals, Rare Earth*/chemistry , Natural Springs*/chemistry , Water Pollutants, Chemical*/chemistry, China ; Salinity
Περίληψη: Rare earth elements (REEs) in saline groundwater are effective tracers of hydrogeochemical processes in deep carbonate-evaporite aquifer systems. This study examines the hydrochemistry, distribution, fractionation, and aqueous speciation of REEs in brackish, saline, and salty springs from the northeastern Sichuan Basin, China. Spring waters are dominated by Na-Cl and Cl·SO4-Na facies, with TDS up to 82.9 g/L, mainly controlled by Triassic evaporite dissolution and deep brine mixing along faulted anticlines. Dissolved REE concentrations are low (ΣREE = 0.096-0.314 μg/L) and decrease with increasing salinity and pH. NASC-normalized patterns show consistent MREE-HREE enrichment and pronounced positive Eu anomalies in deep, reducing thermal waters. Geochemical modeling indicates that REEs are predominantly stabilized as carbonate complexes, with LnCO3 + and Ln (CO3)2 - accounting for over 90% of dissolved species. These results demonstrate that tectonically driven deep circulation, redox conditions, and carbonate complexation jointly regulate REE behavior in saline groundwater systems.
(© 2026 Water Environment Federation.)
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Grant Information: 22JK0623 Shaanxi Provincial Department of Education; YDBK, S202310719119 Nature Science Research Project of Yan'an University; 2022SLSFGG-004 Science and Technology Plan Project; 2025LZORS011 Open Research Fund of Observation and Research Station of Seawater Intrusion and Soil Salinization, Laizhou Bay, Ministry of Natural Resources; 202410719051 China National University Student Innovation and Entrepreneurship Development Program
Contributed Indexing: Keywords: carbonate complexation; carbonate–evaporite aquifer; rare earth elements; redox‐controlled fractionation; saline groundwater
Substance Nomenclature: 0 (Carbonates)
0 (Metals, Rare Earth)
0 (Water Pollutants, Chemical)
Entry Date(s): Date Created: 20260423 Date Completed: 20260715 Latest Revision: 20260715
Update Code: 20260716
DOI: 10.1002/wer.70392
PMID: 42025588
Βάση Δεδομένων: MEDLINE
Περιγραφή
ISSN:1554-7531
DOI:10.1002/wer.70392