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61,005 resultsShowing papers similar to Characteristics of Real-world Non-exhaust Particulates from Vehicles
ClearCharacteristics 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.
Characteristics of Real-World Non-Exhaust Particulates from Vehicles
This study characterized non-exhaust particulate emissions from vehicles including brake wear, tire wear, and road surface particles, examining their size distributions, chemical composition, and toxicity potential. The results support calls for regulatory frameworks that extend beyond tailpipe emissions to address the full spectrum of vehicle-derived pollution.
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.
Quantification and occurrence of 39 tire-related chemicals in urban and rural aerosol from Saxony, Germany.
Researchers quantified 39 tire-related chemicals in urban and rural aerosol samples from two German cities, finding that tire and road wear particles contribute a diverse mixture of organic chemicals — including toxic benzothiazoles and p-phenylenediamines — to urban air. The study establishes that tire particles are a significant source of chemical contamination in city air, with implications for human inhalation exposure.
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.
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.
Comparison of Methods for Sampling Particulate Emissions from Tires under Different Test Environments
Researchers compared different methods for sampling tire wear particle emissions under various test conditions, finding significant methodological differences that affect measurement outcomes and highlighting the need for standardized approaches as non-exhaust emissions become an increasing share of total vehicle pollution.
Modelled atmospheric concentration of tyre wear in an urban environment
Researchers modeled airborne concentrations of tire wear particles — tiny plastic-containing fragments released when vehicle tires rub against road surfaces — across Stockholm, finding that these microplastic particles are widespread in cities and make up 4–6% of total air particle pollution, with concentrations highest near busy highways and in narrow street canyons.
Toxicity of airborne particles—established evidence, knowledge gaps and emerging areas of importance
This toxicology review examined health effects of airborne particulate matter with specific attention to non-exhaust roadside particles (brake and tire wear) and microplastics, identifying knowledge gaps in their relative contributions to cardiorespiratory disease and calling for better characterization of emerging PM sources.
Micro- and nano-plastics (MNPs) in urban air: polymer composition, interactions and inhalation risk
Researchers characterized airborne micro- and nanoplastics in urban air using pyrolysis gas chromatography-mass spectrometry on size-fractionated aerosol samples. The study found total concentrations averaging 0.6 micrograms per cubic meter, with tire wear particles as a dominant source, highlighting an underestimated threat to urban air quality and human respiratory health.
Mass concentrations of common microplastics and tire wear rubbers in urban air
Researchers measured mass concentrations of common microplastics and tire wear rubber particles in urban ambient air, providing quantitative data for inhalation exposure assessment. Tire wear rubber dominated the airborne particle mass in traffic-influenced areas, exceeding concentrations of synthetic polymer microplastics.
On-Road Vehicle Measurement of Tire Wear Particle Emissions and Approach for Emission Prediction
An instrumented measurement vehicle was developed to quantify tire wear particle emissions under real-world on-road conditions, identifying key driving parameters such as speed, load, and cornering that govern emission rates. The study supports the development of emission factors and regulatory standards for non-exhaust tire-derived microplastic pollution.
Markovian city-scale modelling and mitigation of micro-particles from tires
This modeling study estimated tire wear particle emissions at a city scale, finding that as vehicle fleets electrify and tailpipe emissions decline, non-exhaust emissions from tire and brake wear will become the dominant form of traffic-related particulate pollution. Because tire wear particles contain microplastics and toxic chemicals, this shift raises serious public health concerns that warrant stronger regulatory attention.
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.
The problem of emission of total particulate matter and heavy metals from tribological systems in vehicles
Researchers measured total particulate matter and heavy metal emissions generated by tribological contact — friction and wear between mechanical components — finding that brake and tire wear produces significant airborne particle loads containing lead, copper, zinc, and other metals. The results underscore tribological wear as a major non-exhaust source of urban air pollution.
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 Microplastics Particles on Urban Roads: Types, Sizes, and Total Particles
Researchers collected airborne microplastic samples from urban road environments and characterized particle types, sizes, color distributions, and polymer compositions, finding tire-wear rubber and paint fragments alongside fiber and film fragments from packaging and textiles.
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.
Characterisation of non-exhaust emissions from road traffic in Lisbon
Researchers characterized road dust particles in Lisbon, Portugal, finding that brake and tyre wear contribute high levels of copper and zinc to street surfaces, and that arsenic levels in road dust exceeded safe cancer risk thresholds on 90% of sampled streets. The findings highlight the underappreciated health risks from non-exhaust traffic emissions — particles released not from engines but from road surfaces, tires, and brakes — which also contribute to microplastic pollution.
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.
Measurement and Analysis of Brake and Tyre Particle Emissions from Automotive Series Components for High-Load Driving Tests on a Wheel and Suspension Test Bed
This is not primarily about microplastics — it is a vehicle emissions study measuring brake and tyre particle emissions (size distribution, mass, and composition) under high-load driving conditions on a test bed, focused on aerosol characterization and non-exhaust emissions regulation.
Comparison of traffic-related micro- and nanoplastic concentrations at three urban locations
Researchers measured airborne tire and road wear particles (microplastics shed from vehicle tires) at a busy urban road, a highway, and a park, finding rubber particle concentrations were 2-5 times higher near traffic compared to the park, with levels closely tracking other traffic pollutants like black carbon.
Vehicle Emission Models and Traffic Simulators: A Review
This review surveys vehicle emission models and traffic simulation tools used to estimate air pollution from road traffic. While focused on exhaust emissions, the methods discussed are relevant to understanding non-exhaust pollution like tire wear microplastics, which are released in large quantities from vehicle tires. Better emission modeling could help quantify the full scope of traffic-related microplastic pollution in urban areas.
Car and truck tire wear particles in complex environmental samples – A quantitative comparison with “traditional” microplastic polymer mass loads
Researchers extended an existing Py-GC/MS method to include tire wear particles (TWP) alongside conventional microplastics in North Sea samples, finding that TWP represent a dominant mass fraction of environmental MPs often excluded from polymer-based surveys.