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Tire Road Wear Particles, Microplastics and Metals in Sediment of Stormwater Detention Basins: Occurrence, Relation to Land Use and Ecological Risk Assessment
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Tire and road wear particles in infiltration pond sediments: Occurrence, spatial distribution, size fractionation and correlation with metals
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Tiny bits of rubber worn off from car tires (a type of microplastic) wash off roads into stormwater ponds along with toxic metals like arsenic, cadmium, and zinc, and this study found the two are closely linked, with rubber particle levels lining up with metal contamination in pond sediment. The good news: these ponds act as effective "catch basins," trapping tire particles and metals before they can reach rivers, lakes, or drinking water sources, highlighting why maintaining stormwater infrastructure matters for reducing pollution exposure in our environment.
Assessment of Heavy Metal Sources and Microplastics in Drainage Deposited Sediments from Highways and Rest Areas
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Analysis of highway drainage sediments along a South Korean expressway found zinc and copper concentrations exceeding natural background levels by 8–10 times, with vehicle-derived polystyrene and acrylonitrile butadiene styrene microplastics co-occurring in the same sediments. The co-contamination of road runoff with both heavy metals and microplastics highlights highways as dual nonpoint pollution sources threatening adjacent soils and waterways.
Tire-wear Particles as a Major Component of Microplastics in the Environment
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Researchers analyzed non-exhaust traffic particles along busy German roads using microscopy and SEM-EDX, finding that tire-wear particles dominate coarse airborne particulate matter and accumulate additional hazardous metals from brake and road abrasion, making them a major and chemically complex microplastic pollutant in aquatic environments.
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