Distribution and variation of metals in urban river sediments in response to microplastics presence, catchment characteristics and sediment properties
He, Beibei, Liu, An, Duodu, Godfred O., Wijesiri, Buddhi, Ayoko, Godwin A, & Goonetilleke, Ashantha (2023) Distribution and variation of metals in urban river sediments in response to microplastics presence, catchment characteristics and sediment properties. Science of the Total Environment, 856(Part 2), Article number: 159139.
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Description
<p>Despite well documented studies on metal pollutants in aquatic ecosystems, knowledge on the combined effects of catchment characteristics, sediment properties, and emerging pollutants, such as microplastics (MPs) on the presence of metals in urban river sediments is still limited. In this study, the synergistic influence of MPs type and hazard indices, catchment characteristics and sediment properties on the variability of metals present in sediments was investigated based on a typical urban river, Brisbane River, Australia. It was noted that the mean concentrations of metals in Brisbane River decreases in the order of Al (94,142 ± 12,194 μg/g) > Fe (62,970 ± 8104 μg/g) > Mn (746 ± 258 μg/g) > Zn (196 ± 29 μg/g) > Cu (50 ± 19 μg/g) > Pb (47 ± 25 μg/g) > Ni (25 ± 3 μg/g) while the variability of metals decreases in the order of Pb > Cu > Mn > Al > Ni > Zn > Fe along the river. According to enrichment factor (Ef) contamination categories, Mn, Cu and Zn exert a moderate level of contamination (Ef > 2), while Fe, Ni, and Zn show slight sediment pollution (1 < Ef < 2). In the case of Pb, extremely high enrichment (Ef > 3) was found at sampling locations having a high urbanisation level and traffic related activities. Crustal metal elements (namely, Al, Fe, Mn) were found to be statistically significantly correlated with sediment properties (P < 0.05). Anthropogenic source metals (namely, Cu, Ni, Pb, Zn) were observed to be highly correlated with catchment characteristics. Additionally, the presence of metals in sediments were positively correlated with MPs concentration, and negatively correlated with MPs hazard indices. The outcomes of this study provide new insights for understanding the relationships among metals and various influential factors in the context of urban river sediment pollution, which will benefit the formulation of risk assessment and regulatory measures for protecting urban waterways.</p>
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| ID Code: | 235519 | ||||||
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| Item Type: | Contribution to Journal (Journal Article) | ||||||
| Refereed: | Yes | ||||||
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| Additional Information: | Acknowledgements: This work was supported by the National Natural Science Foundation of China (U21A2036, 52170100), Guangdong Basic and Applied Basic Research Foundation (2019A1515010843, 2019A1515110353), Shenzhen Science and Innovation Commission (20200813094050001, JCYJ20200109113006046). | ||||||
| Measurements or Duration: | 9 pages | ||||||
| DOI: | 10.1016/j.scitotenv.2022.159139 | ||||||
| ISSN: | 0048-9697 | ||||||
| Pure ID: | 116128647 | ||||||
| Divisions: | Current > Research Centres > Centre for Materials Science ?? 1469140 ?? Current > QUT Faculties and Divisions > Faculty of Science Current > Schools > School of Chemistry & Physics Current > QUT Faculties and Divisions > Faculty of Engineering Current > Schools > School of Civil & Environmental Engineering |
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| Copyright Owner: | 2022 Elsevier B.V. | ||||||
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| Deposited On: | 11 Oct 2022 12:35 | ||||||
| Last Modified: | 16 Jun 2026 09:46 |
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