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Microplastics (MPs) in urban roadside snowbanks: Quantities and dynamics of release
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Microplastics (MPs) in urban roadside snowbanks: Quantities, size fractions and dynamics of release
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Tire wear particles and road wear particles were found to dominate microplastic contamination in urban roadside snowbanks in northern Sweden, with MPs detected across multiple size fractions. The study documented a large pulse of MP release when snowbanks melt in spring, identifying snowmelt as a seasonal point source of microplastics entering urban waterways.
Microplastics pathways in the urban environment: Urban roadside snowbanks
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Researchers sampled urban roadside snowbanks in a Canadian city and found high concentrations of microplastics, with tire wear particles and synthetic fibers most abundant. The study demonstrates that urban snowbanks accumulate microplastics throughout winter and release a pulse of contamination into waterways when they melt in spring.
Microplastics in Urban Environments: Sources, Pathways, and Distribution
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Researchers mapped the major sources and pathways of microplastic pollution in cities, finding that tire wear, laundry wastewater, landfills, and construction activity collectively make urban areas major generators of the microplastics that flow into surrounding air, water, and soil.
Trafikrelaterade föroreningar i urban snö : Koncentrationer, storleksfördelning och spridning vid snösmältning
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This Swedish study found that urban snowbanks accumulate traffic-related pollutants — including microplastics, metals, and organic compounds — which are released in concentrated pulses when snow melts in spring, posing risks to urban waterways.
Microplastics captured by snowfall: A study in Northern Iran
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Fresh snow samples collected from 29 locations across urban and remote regions of northern Iran were analyzed for microplastics after a period of sustained snowfall, finding plastic particles at concentrations ranging from undetected to high levels depending on location. The study demonstrates that snowfall acts as an atmospheric scavenging mechanism for airborne microplastics and that urban areas show substantially higher deposition than remote sites.
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