Affiliation:
1. Aquatic Contaminants Research Division, Environment and Climate Change Canada, Montréal, QC H2Y 2E7, Canada
Abstract
Plastic-based contamination has become a major cause of concern as it pervades many environments such as air, water, sediments, and soils. This study sought to examine the presence of microplastics (MPs) and nanoplastics (NPs) in freshwater mussels placed at rainfall/street runoff overflows, downstream (15 km) of the city centre of Montréal, and 8 km downstream of a municipal effluent dispersion plume. MPs and NPs were determined using flow cytometry and size exclusion chromatography using fluorescence detection. Following 3 months of exposure during the summer season, mussels contained elevated amounts of both MPs and NPs. The rainfall overflow and downstream of the city centre were the most contaminated sites. Lipid peroxidation, metallothioneins, and protein aggregates (amyloids) were significantly increased at the most contaminated sites and were significantly correlated with NPs in tissues. Based on the levels of MPs and NPs in mussels exposed to municipal effluent, wastewater treatment plants appear to mitigate plastic contamination albeit not completely. In conclusion, the data support the hypothesis that mussels placed in urbanized areas are more contaminated by plastics, which are associated with oxidative damage. The highest responses observed at the overflow site suggest that tire wear and/or asphalt (road) erosion MPs/NPs represent important sources of contamination for the aquatic biota.
Subject
Pollution,Pharmacology,Toxicology
Reference44 articles.
1. Plastic Europe 2021 (2022). Plastics—The facts 2022. PlasticEurope, 1, 1–64.
2. Capricho, J.C., Prasad, K., Hameed, N., Nikzad, M., and Salim, N. (2022). Upcycling Polystyrene. Polymers, 14.
3. Unraveling the toxicity of tire wear contamination in three freshwater species: From chemical mixture to nanoparticles;Gao;J. Hazard. Mater.,2023
4. Tire wear particles in the aquatic environment—A review on generation, analysis, occurrence, fate and effects;Wagner;Water Res.,2018
5. Applications and societal benefits of plastics;Andrady;Philos. Trans. R. Soc. Lond B Biol. Sci.,2009
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献