We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Impregnation levels and gradient of tire wear particle content of surface soils adjacent to a major road
Summary
Researchers assessed the impregnation levels and spatial gradient of tire and road wear particle (TRWP) contamination in surface soils adjacent to a major road, investigating how proximity to the road surface affects the degree of microplastic loading in roadside soil profiles. The results showed significant TRWP concentrations in soils closest to the road, with contamination gradients extending laterally into adjacent land, confirming roadside soils as durable repositories of tyre-derived microplastics.
Many studies focus on the ubiquity of microplastics (MP) in the ecosphere. However, only a limited number of studies take into consideration tire and road wear particles (TRWP), which are generated by frictional forces at the tire-pavement interface. In fact, TRWP emissions also tend to disperse and the degree of contamination would be particularly significant when the receiving environmental compartment adjoins the road. Therefore, roadside soils are expected to represent one of the environmental matrices most durably exposed to this pollution. To assess the degree and extent of roadside impregnation, we determined the TRWP content of surface soils collected along a 200 m transect from a major road in western France. Data show strong contamination within the first few meters from the road, peaking around 4000 mg.kg-1. An exponential decrease in TRWP content was observed up to 20 m from the road edge, followed by a stabilization corresponding to background values (averaging 358 ± 77 mg.kg-1). The measurements also reveal that 13 Also see: https://micro2024.sciencesconf.org/556171/document
Sign in to start a discussion.
More Papers Like This
Microplastics and tyre wear particles infiltration in the soil of a roadside biofiltration swale
Researchers investigated the infiltration of microplastics and tyre wear particles into soil along a roadside biofiltration swale, assessing the extent to which these particles migrate from the road surface into subsurface soils under real-world conditions.
Determination of tire wear markers in soil samples and their distribution in a roadside soil
Researchers developed a thermal extraction method to measure tire wear particles in roadside soil, finding concentrations up to 15,898 mg/kg with most particles accumulating in the topsoil within 2 meters of the road surface.
Features of the highway road network that generate or retain tyre wear particles
This study analyzed highway road network features that contribute to tyre wear particle generation and retention, finding that road curvature, gradient, and surface texture are key factors influencing where tyre-derived microplastics accumulate along road corridors.
Stock and vertical distribution of microplastics and tire and road wear particles into the soils of a high-traffic roadside biofiltration swale
Researchers quantified microplastics and tire and road wear particles in soil profiles of a highway-adjacent biofiltration swale in France, sampling at multiple depths. TRWP concentrations were highest near the road surface and declined with depth and distance, but particles were detected down to 30 cm, indicating that these roadside green infrastructure features accumulate and partially retain traffic-derived microplastics.
Tracks of travel: unveiling tire particle concentrations in Swiss cantonal road soils
Researchers quantified tire wear particle concentrations in roadside soils along fifteen Swiss cantonal roads with relatively low traffic volumes. They found average concentrations of 111,000 particles per kilogram of dry soil, with particle counts and sizes decreasing with increasing distance from the road. The study also found positive relationships between tire wear particle numbers and associated pollutants like polycyclic aromatic hydrocarbons and trace metals.