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Distribution and migration of rare earth elements in sediment profile near a decommissioned uranium hydrometallurgical site in South China: Environmental implications

文献类型：期刊论文

作者Sun, Mengqing7; Liu, Juan7; Lin, Ke5,6; Yuan, Wenhuan7; Liang, Xiaoliang4; Wu, Hanyu3; Zhang, Ying7; Dai, Qunwei2; Yang, Xiao1; Song, Gang7
刊名JOURNAL OF ENVIRONMENTAL MANAGEMENT
出版日期2024-08-01
卷号366页码:12
关键词Environmental contamination Anthropogenic activity Ecological risk Mineral composition
ISSN号0301-4797
DOI10.1016/j.jenvman.2024.121832
英文摘要Rare earth elements have garnered increasing attention due to their strategic properties and chronic toxicity to humans. To better understand the content, migration, and ecological risk of rare earth elements in a 180 cm depth sediment profile downstream of a decommissioned uranium hydrometallurgical site in South China, X-ray powder diffraction (XRD) and High-resolution transmission electron microscope (HRTEM) were additionally used to quantify and clarify the mineral composition features. The results showed a high enrichment level of total rare earth elements in the sediment depth profile (range: 129.6-1264.3 mg/kg); the concentration variation of light rare earth elements was more dependent on depth than heavy rare earth elements. Overall, there was an obvious enrichment trend of light rare earth elements relative to heavy rare earth elements and negative anomalies of Ce and Eu. The fractionation and anomaly of rare earth elements in sediments were closely related to the formation and weathering of iron-bearing minerals and clay minerals, as confirmed by the correlation analysis of rare earth elements with Fe (r2 = 0.77-0.90) and Al (r2 = 0.50-0.71). The mineralogical composition of sediments mainly consisted of quartz, feldspar, magnetite, goethite, and hematite. Pollution assessment based on the potential ecological risk index, pollution load index (PLI), enrichment factor, and geological accumulation index (Igeo) showed that almost all the sediments had varying degrees of pollution and a high level of ecological risk. This study implied that continued environmental supervision and management are needed to secure the ecological health in terms of rare earth elements enrichment around a decommissioned uranium hydrometallurgical site. The findings may provide valuable insights for other uranium mining and hydrometallurgical areas globally.
WOS关键词MINING AREA ; MINING/MILLING ACTIVITIES ; AGRICULTURAL SOIL ; FUJIAN PROVINCE ; MILL TAILINGS ; FRACTIONATION ; CONTAMINATION ; GEOCHEMISTRY ; MINE ; POLLUTION
资助项目Guangdong Basic and Applied Basic Research Foundation[2023A1515012381] ; National Natural Science Foundation of China[41773011] ; Western Light-Key Laboratory Cooperative Research Cross-Team Project of Chinese Academy of Sciences[xbzg-zdsys-202309] ; Science and Technology Program of Guangzhou, China[2024A03J0458] ; Key Laboratory of Water and Soil Resources Conservation and Restoration in the Middle and Lower Reaches of Yellow River Basin, Ministry of Natural Resources[WSRCR-2023-03] ; Key Laboratory of Strategic Mineral Resources of the Upper Yellow River, Ministry of Natural Resources[YSMRKF202211] ; Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory[22kfhk03]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:001276789700001
出版者ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
资助机构Guangdong Basic and Applied Basic Research Foundation ; National Natural Science Foundation of China ; Western Light-Key Laboratory Cooperative Research Cross-Team Project of Chinese Academy of Sciences ; Science and Technology Program of Guangzhou, China ; Key Laboratory of Water and Soil Resources Conservation and Restoration in the Middle and Lower Reaches of Yellow River Basin, Ministry of Natural Resources ; Key Laboratory of Strategic Mineral Resources of the Upper Yellow River, Ministry of Natural Resources ; Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory
源URL[http://ir.igsnrr.ac.cn/handle/311030/207095]  
专题陆地表层格局与模拟院重点实验室_外文论文
通讯作者Wang, Jin
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
2.Southwest Univ Sci & Technol, Sch Environm & Resource, Minist Educ, Key Lab Solid Waste Treatment & Resource Recycling, Mianyang, Peoples R China
3.Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou, Peoples R China
5.Nanyang Technol Univ, Asian Sch Environm, Singapore, Singapore
6.Nanyang Technol Univ, Earth Observ Singapore, Singapore, Singapore
7.Guangzhou Univ, Sch Environm Sci & Engn, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ, Guangzhou 510006, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Mengqing,Liu, Juan,Lin, Ke,et al. Distribution and migration of rare earth elements in sediment profile near a decommissioned uranium hydrometallurgical site in South China: Environmental implications[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2024,366:12.
APA Sun, Mengqing.,Liu, Juan.,Lin, Ke.,Yuan, Wenhuan.,Liang, Xiaoliang.,...&Wang, Jin.(2024).Distribution and migration of rare earth elements in sediment profile near a decommissioned uranium hydrometallurgical site in South China: Environmental implications.JOURNAL OF ENVIRONMENTAL MANAGEMENT,366,12.
MLA Sun, Mengqing,et al."Distribution and migration of rare earth elements in sediment profile near a decommissioned uranium hydrometallurgical site in South China: Environmental implications".JOURNAL OF ENVIRONMENTAL MANAGEMENT 366(2024):12.

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来源：地理科学与资源研究所

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