Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
Sun, Mengqing1; Liu, Juan1; Lin, Ke2,3; Yuan, Wenhuan1; Liang, Xiaoliang4 ; Wu, Hanyu5; Zhang, Ying1; Dai, Qunwei6; Yang, Xiao7; Song, Gang1; Wang, Jin1
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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 | |
| Source Publication | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| ISSN | 0301-4797 |
| 2024-08-01 | |
| Volume | 366Pages:12 |
| DOI | 10.1016/j.jenvman.2024.121832 |
| Language | 英语 |
| WOS Research Area | Environmental Sciences & Ecology |
| Abstract | 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. |
| Keyword | Environmental contamination Anthropogenic activity Ecological risk Mineral composition |
| WOS ID | WOS:001276789700001 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/78181 |
| Collection | 中国科学院矿物学与成矿学重点实验室 |
| Corresponding Author | Wang, Jin |
| Affiliation | 1.Guangzhou Univ, Sch Environm Sci & Engn, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ, Guangzhou 510006, Peoples R China 2.Nanyang Technol Univ, Earth Observ Singapore, Singapore, Singapore 3.Nanyang Technol Univ, Asian Sch Environm, Singapore, Singapore 4.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou, Peoples R China 5.Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai, Peoples R China 6.Southwest Univ Sci & Technol, Sch Environm & Resource, Minist Educ, Key Lab Solid Waste Treatment & Resource Recycling, Mianyang, Peoples R China 7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China |
| Recommended Citation 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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