Sources, trophodynamics, contamination and risk assessment of toxic metals in a coastal ecosystem by using a receptor model and Monte Carlo simulation
| Autor: | Mengchang He, Zongxing Wang, Jing Wang, Xiang Gu, Xitao Liu, Wei Ouyang, Chunye Lin, Baodong Wang, Ming Xin, Shuang Lu, Maoshan Lian |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Pollution
China Geologic Sediments Environmental Engineering Health Toxicology and Mutagenesis media_common.quotation_subject Risk Assessment Metals Heavy Animals Humans Environmental Chemistry Ecosystem Waste Management and Disposal Trophic level media_common Isotope analysis Contamination Food web Bioaccumulation Environmental chemistry Environmental science Monte Carlo Method Bay Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Journal of Hazardous Materials. 424:127482 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2021.127482 |
| Popis: | Heavy metal (HM) pollution in coastal ecosystems have posed threats to organisms and human worldwide. This study comprehensively investigated the concentrations, sources, trophodynamics, contamination, and risks of six HMs in the coastal ecosystem of Jiaozhou Bay, northern China, by stable isotope analysis, positive matrix factorization (PMF), and Monte Carlo simulation. Overall, Co, Cu, Ni, Pb, and Zn were significantly bio-diluted in the food web, while Cr was significantly biomagnified with a trophic magnification factor of 1.23. In addition, trophodynamics of the six HMs was different among fish, mollusk, and crustacean. Furthermore, detailed transfer pathways of six HMs in the food web including eight trophic levels were different from one another. Bioaccumulation order of the six HMs was Cu > Zn > Co, Cr, Ni, and Pb. Zinc concentrations were the highest in seawater, sediments, and organisms. Anthropogenic sources contributed to 71% for Zn, 31% for Cu and Pb, and 27% for Co, Cr, and Ni in the sediment, which was moderately contaminated with moderate ecological risk. However, the human health risk of HMs from eating seafood was relatively low. To protect the Jiaozhou Bay ecosystem, HM contamination should be further controlled in future. |
| Databáze: | OpenAIRE |
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