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61,005 resultsShowing papers similar to Morphology and mineral encrustations of density-separated tire- and road-wear particles collected in Charleston, South Carolina
ClearClassification and Characterization of Tire-Road Wear Particles in Road Dust by Density
Tire-road wear particles were classified and characterized by density using road dust from an asphalt pavement, allowing separation of tire tread-derived particles from road surface and mineral components. The density-based classification approach improves the accuracy of tire wear particle quantification in environmental monitoring studies.
An Experimental Study on the Component Analysis and Variation in Concentration of Tire and Road Wear Particles Collected from the Roadside
Researchers analyzed the concentration and composition of tire and road wear particles (TRWPs) collected from roadsides during summer and winter in Korea. The study found seasonal variations in TRWP concentrations related to temperature differences, highlighting the need for strategies to reduce these particles as vehicle registrations continue to increase.
Shades of grey—tire characteristics and road surface influence tire and road wear particle (TRWP) abundance and physicochemical properties
A suite of experiments characterized how tire type, compound, and road surface properties influence tire and road wear particle (TRWP) size, morphology, and emission rates, finding significant variation across tire and road combinations relevant to predicting environmental exposure.
Types and concentrations of tire wear particles (TWPs) in road dust generated in slow lanes.
Road dust samples collected near traffic lights contained tire wear particles (TWPs), with the concentration and size distribution varying by location and traffic direction. Tire wear is one of the largest sources of microplastic pollution in urban environments, and these particles are carried into waterways by stormwater runoff.
Investigation of physical and chemical properties of particulate matter caused by vehicle tire wear
Researchers characterized the physical and chemical properties of submicron tire wear particles generated from vehicle use on roadways. Using advanced analytical techniques, they identified the elemental composition and morphological structure of these particles, finding notable concentrations of metals and heavy metals. The study highlights that tire wear particles are a significant source of microplastic and chemical pollution with potential implications for human health and the environment.
Characterization of tire and road wear particles in urban river samples
Tire and road wear particles in urban river sediments from the Seine River were characterized using density separation and chemical mapping methods, finding average particle sizes of 133-250 microns with TRWP concentrations of up to 930 mg/kg dry sediment downstream of the Rouen urban area.
Preparation and Characterization of Model Tire–Road Wear Particles
Researchers developed a laboratory method to prepare model tire-road wear particles (TRWPs) that mimic those found in the environment, combining tire tread wear particles (212-500 µm) with crushed granite mineral particles (20-38 µm) at a 1:10 weight ratio bonded with chloroform treatment. The resulting model TRWPs closely replicated the morphology of real-world TRWPs and were characterized for use as reference materials in environmental contamination studies.
Settling Velocities of Tire and Road Wear Particles: Analyzing Finely Graded Density Fractions of Samples from a Road Simulator and a Highway Tunnel.
Researchers measured the terminal settling velocities of tyre and road wear particles (TRWP) from a road simulator and highway tunnel across different density and size fractions, providing the first empirical settling velocity data for these particles to support modeling of their transport in aquatic environments.
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.
Characterization of airborne tire particle emissions under realistic conditions on the chassis dynamometer, on the test track, and on the road
Researchers developed a new tire and road wear particle (TRWP) sampling system and characterized airborne emissions under real-world conditions on a chassis dynamometer, test track, and public road. Emissions showed a bimodal size distribution with dominant modes at ~10 nm and 270 nm, with SEM/EDS revealing two particle formation mechanisms and confirming tire rubber as a major source of ultrafine airborne particles.
Differentiating and Quantifying Carbonaceous (Tire, Bitumen, and Road Marking Wear) and Non-carbonaceous (Metals, Minerals, and Glass Beads) Non-exhaust Particles in Road Dust Samples from a Traffic Environment
Researchers used automated electron microscopy combined with machine learning to identify and count different types of microplastic and wear particles in road dust, finding that tire and bitumen wear particles made up about 19-22% of particles in traffic environments. The method provides a fast, non-destructive way to quantify the types of traffic-generated microplastics polluting urban environments.
Analysis of TRWP Particle Distribution in Urban and Suburban Landscapes, Connecting Real Road Measurements with Particle Distribution Simulation
Researchers combined road-based tyre and road wear particle emission sampling with particle distribution simulations at a high-traffic urban intersection, finding that TRWP concentrations correlated with vehicle dynamics such as braking and acceleration, and that air humidity and dust resuspension significantly influenced particle measurements in the field.
Chemical mapping of tire and road wear particles for single particle analysis
Tire and road wear particles (TRWP), which contain rubber polymer and pavement material, were chemically mapped using laser ablation-ICP-MS for single particle analysis. The technique enabled characterization of trace element distributions within individual TRWP particles, improving understanding of their environmental fate alongside conventional microplastics.
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.
Concentrations of tire wear microplastics and other traffic-derived non-exhaust particles in the road environment
Researchers measured actual environmental concentrations of tire wear microplastics and other traffic-derived non-exhaust particles in a rural highway setting, providing field-based data to complement the theoretical estimates that dominate current literature.
Separation and quantification of tire and road wear particles in road dust samples: Bonded-sulfur as a novel marker
A new quantification method for tire and road wear particles (TRWPs) was developed using bonded-sulfur as a chemical marker on road dust samples, providing improved accuracy over existing methods for monitoring this major microplastic source.
On airborne tire wear particles along roads with different traffic characteristics using passive sampling and optical microscopy, single particle SEM/EDX, and µ-ATR-FTIR analyses
Researchers used passive sampling and advanced analytical techniques including SEM/EDX and micro-ATR-FTIR to characterize airborne tire wear particles along roads with different traffic volumes and speeds. The study found that tire wear particles, a major category of microplastic pollution, varied in concentration and composition depending on traffic characteristics, highlighting roadways as a significant source of airborne microplastic contamination.
Identification, classification and quantification of microplastics in road dust and stormwater
Researchers identified and quantified microplastics in road dust and stormwater, finding significantly higher concentrations in industrial areas compared to residential zones, with tire wear particles and polyethylene fragments being the most common types.
Characteristics of Vehicle Tire and Road Wear Particles’ Size Distribution and Influencing Factors Examined via Laboratory Test
Researchers conducted laboratory tests to characterize the size distribution of tire and road wear particles under various conditions. The study found that factors such as driving speed, tire composition, and road surface characteristics significantly influence the size and quantity of wear particles released, which are a growing source of microplastic pollution.
Tire crumb in the environment: a review on occurrence, fate and recent advances in detection and analysis
This review provides a comprehensive assessment of tire wear particles as environmental contaminants, covering their physical and chemical properties, occurrence across environmental matrices, and detection methods. Researchers found that tire wear particles are present in air, water, and soil worldwide but remain difficult to quantify due to their variable density, aging behavior, and lack of standardized detection protocols. The study highlights the urgent need for consistent analytical methods to better understand how these particles move through and impact the environment.
Seasonal variation in characteristics of wear microparticles of high density (> 1.8 g cm−3) produced on road
By analyzing road dust across seasons, this study characterized the types and quantities of high-density wear particles (denser than 1.8 g/cm³) produced by traffic, including tire rubber, road paint, glass beads, and plastic particles, with winter generating the most. Dense particles settle out of water quickly, meaning they concentrate in nearby river sediments and could serve as useful tracers for tracking road-sourced pollution.
Characteristics of Real-world Non-exhaust Particulates from Vehicles
Researchers characterized non-exhaust particulate emissions from vehicle tire and road wear, collecting atmospheric PM samples with a high-volume quartz filter sampler and using pyrolysis-GC/MS to analyze tire rubber markers including polycyclic aromatic hydrocarbons and heavy metals, quantifying the contribution of tire-brake-road wear particles to urban air pollution.
Analytical Investigation of Tire Induced Particle Emissions
This automotive engineering study measured the size distribution of fine dust particles (under 10 micrometers) generated by tire wear, finding that tire-derived particles represent a significant non-exhaust source of urban particulate matter. As electric vehicle adoption reduces exhaust emissions, tire and brake wear particles will become a proportionally larger component of urban air pollution. These tire wear particles are also a major source of microplastic contamination in road runoff.
A comparative analysis of the chemical composition and biofilm formation on tire wear particles from six different tire types
Researchers compared the chemical composition and biofilm characteristics of tire wear particles collected from different vehicle types and road conditions, examining how these variables affect toxin and pathogen attachment. Tire wear particle composition varied with source, and surface properties influenced the attachment of microorganisms and contaminants, affecting their hazard potential.