Academic Journal
Spatial Distribution, Ecological and Human Health Risk Assessment, and Quantitative Source Apportionment of Heavy Metals in Stream Sediments of an Arid River, Qaidam Basin, NW China.
| Τίτλος: | Spatial Distribution, Ecological and Human Health Risk Assessment, and Quantitative Source Apportionment of Heavy Metals in Stream Sediments of an Arid River, Qaidam Basin, NW China. |
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| Συγγραφείς: | Zhao S; Qinghai Fourth Geological Exploration Institute, Xining, Qinghai, China.; Qinghai Key Laboratory of Shale Gas Resources, Xining, Qinghai, China., Xue S; Qinghai Fourth Geological Exploration Institute, Xining, Qinghai, China.; Qinghai Key Laboratory of Shale Gas Resources, Xining, Qinghai, China., An S; Qinghai Fourth Geological Exploration Institute, Xining, Qinghai, China.; Qinghai Key Laboratory of Shale Gas Resources, Xining, Qinghai, China., Ning H; Tianjin Center (North China Center for Geoscience Innovation), China Geological Survey, Tianjin, China., Wang J; Qinghai Geological Survey, Xining, Qinghai, China., Ji B; Qinghai Fourth Geological Exploration Institute, Xining, Qinghai, China.; Qinghai Key Laboratory of Shale Gas Resources, Xining, Qinghai, China., Duan J; Qinghai Fourth Geological Exploration Institute, Xining, Qinghai, China.; Qinghai Key Laboratory of Shale Gas Resources, Xining, Qinghai, China., Wang Q; Qinghai Fourth Geological Exploration Institute, Xining, Qinghai, China.; Qinghai Key Laboratory of Shale Gas Resources, Xining, Qinghai, China., Li S; Qinghai Fourth Geological Exploration Institute, Xining, Qinghai, China.; Qinghai Key Laboratory of Shale Gas Resources, Xining, Qinghai, China., Wang G; Qinghai Fourth Geological Exploration Institute, Xining, Qinghai, China.; Qinghai Key Laboratory of Shale Gas Resources, Xining, Qinghai, China. |
| Πηγή: | Water environment research : a research publication of the Water Environment Federation [Water Environ Res] 2026 Oct; Vol. 98 (10), pp. e70596. |
| 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): | Metals, Heavy*/analysis , Metals, Heavy*/chemistry , Geologic Sediments*/chemistry , Rivers*/chemistry , Water Pollutants, Chemical*/analysis , Water Pollutants, Chemical*/chemistry, China ; Risk Assessment ; Humans ; Environmental Monitoring |
| Περίληψη: | Under the dual influence of geological background and human activities, heavy metal contamination in riverine ecosystems poses a significant threat to ecological security and public health. This study systematically investigated the contamination characteristics, ecological and health risks, and sources of nine heavy metals (As, Cr, Pb, Cu, Zn, Ni, Hg, Co, and Ti) based on 7395 stream sediment samples collected from the Bayinguole River in the Qaidam Basin. The results indicated an overall enrichment of Co, Ni, Cr, Pb, Cu, Zn, and Ti across the study area, among which Co and Ni were the most prominent, whereas As and Hg exhibited widespread background depletion. Contamination assessments revealed that the basin is overall unpolluted. However, Co exhibited slight regional enrichment, and Cr, Ni, and Pb displayed localized extreme high-concentration anomalies. A coupled principal component analysis and positive matrix factorization (PCA-PMF) model successfully apportioned heavy metal sources into three distinct pathways: natural geological background (67.1%), industrial and mining activities (26.7%), and atmospheric deposition (6.2%). In terms of ecological risk, the basin overall presented a low level of potential threat, with Co identified as the primary risk driver. Health risk assessments demonstrated that children face higher exposure vulnerabilities than adults, whereas localized carcinogenic risks are primarily driven by extreme hot spots of Cr and As. This study provides a solid scientific foundation for water ecological management, targeted regional pollution control, and public health protection in arid inland river basins. (© 2026 Water Environment Federation.) |
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| Grant Information: | 2024524031ky005 Qinghai Provincial Department of Science and Technology |
| Contributed Indexing: | Keywords: Qaidam Basin; heavy metal contamination; risk assessment; source apportionment; stream sediments |
| Substance Nomenclature: | 0 (Metals, Heavy) 0 (Water Pollutants, Chemical) |
| Entry Date(s): | Date Created: 20260928 Date Completed: 20260928 Latest Revision: 20260930 |
| Update Code: | 20260930 |
| DOI: | 10.1002/wer.70596 |
| PMID: | 42805927 |
| Βάση Δεδομένων: | MEDLINE |
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