| Issue |
E3S Web Conf.
Volume 630, 2025
2025 International Conference on Eco-environmental Protection, Environmental Monitoring and Remediation (EPEMR 2025)
|
|
|---|---|---|
| Article Number | 01021 | |
| Number of page(s) | 4 | |
| Section | Smart Technologies for Environmental Monitoring and Pollution Mitigation | |
| DOI | https://doi.org/10.1051/e3sconf/202563001021 | |
| Published online | 22 May 2025 | |
Spatial Distribution and Risk Assessment of Heavy Metals in Ziya River Basin
College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Marine Environment and Ecology, Ocean University of China, Qingdao 266100, China
* Corresponding author: ruhai@ouc.edu.cn
This study examines the spatial distribution and ecological risks of heavy metals (Hg, Pb, Zn, Cu, Cd) in wetlands and rivers of China’s Ziya River Basin. Sampling in 2017–2018 covered key wetlands (Nandagang, Beidagang) and rivers (Fuyang River, Ziya New River). Water, sediment, and zooplankton were analyzed via ICP-MS and standard methods. Results showed spatial variability: riverine Hg (441.7 ± 1354.1 ng·L−1) exceeded standards by fourfold, while Dongwushi Reservoir’s high Pb (53.1 ± 33.9 μg·L−1) linked to mining. Nandagang’s Hg (88.3 ± 109.6 ng·L−1) correlated with historical contamination. Cu, Cd, and Pb indicated anthropogenic sources (urban/agricultural runoff), whereas Zn and Hg tied to fertilizers and atmospheric deposition. Despite localized risks, comprehensive indices (I ≤ 1) showed no basin-wide pollution. Findings emphasize targeted control for hotspots and support wetland conservation.
© The Authors, published by EDP Sciences, 2025
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