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61,005 resultsShowing papers similar to Concentration of Microplastics in Road Dust as a Function of the Drying Period—A Case Study in G City, Korea
ClearOccurrence and characteristics of microplastics in surface road dust in Kusatsu (Japan), Da Nang (Vietnam), and Kathmandu (Nepal)
Microplastics were detected in road dust sampled from three Asian cities (Kusatsu in Japan, Da Nang in Vietnam, and Kathmandu in Nepal), with concentrations and polymer types varying by city and sampling location. The study demonstrates that road surfaces are a major reservoir of microplastics in urban environments across diverse Asian contexts.
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.
Spatiotemporal occurrence and characteristics of microplastics in the urban road dust in a megacity, eastern China
Researchers collected road dust samples from different areas of Nanjing, a major city in eastern China, and found an average of 143 microplastic particles per square meter. Commercial and heavy industrial zones had the highest contamination levels, with 29 different polymer types identified across the city. The study found that urban land use, recent rainfall, and particulate matter levels were the main factors influencing microplastic pollution patterns in road dust.
Resuspension of microplastics and microrubbers in a semi-arid urban environment (Shiraz, Iran)
Researchers quantified airborne microplastics and microrubbers in road dust across Shiraz, Iran, finding significant resuspension of particles up to 177 cm above road level, highlighting an underappreciated exposure pathway for urban populations.
Quantification of microplastic by particle size down to 1.1 μm in surface road dust in an urban city, Japan
Researchers quantified microplastics in urban road dust in Japan down to 1.1 micrometers, revealing that smaller size fractions contained disproportionately higher particle counts and that roads are a significant source of fine microplastic pollution.
[Characteristics of Microplastic Present in Urban Road Dust].
Researchers characterized microplastic pollution in urban road dust from Ma'anshan City, China, finding abundances of 223 particles/kg with polypropylene (58.9%) and polyethylene (30.1%) dominant, and commercial areas showing the highest contamination levels.
Tracking of microplastics distribution patterns and their characterisation in deposited road dust from Dhaka city, Bangladesh
Researchers measured microplastic contamination in road dust across Dhaka, Bangladesh, finding thousands of particles per kilogram in samples from different road types and locations. Larger dust particles contained more microplastics, with fibers and fragments being the most common shapes, primarily made of polyethylene and polystyrene. Since road dust is kicked up into the air by traffic, these microplastics can be inhaled by pedestrians and residents, creating a direct exposure pathway for human health.
Microplastic and tyre wear particles at a highway: a case study from Norway
Researchers monitored microplastics and tire wear particles (tiny rubber fragments shed by vehicles) in air, road runoff, and road dust along a busy Norwegian highway, finding the highest concentrations in road dust and the lowest in air. The study demonstrates that traffic is a major source of microplastic pollution across multiple environmental pathways.
Influence of road roughness and slope on the accumulation and distribution of tire-wear particles and heavy metals in road dust
Researchers measured tire-wear particles and heavy metals in road dust across 57 segments in Seoul, finding that rougher roads (IRI >3.0) generated 11.9% more tire-wear particles per vehicle, that stop-and-go low-speed driving accumulated 24% more particles than high-speed roads, and that downhill grades increased brake-wear metals — providing empirical data linking road conditions and driving behavior to non-exhaust microplastic pollution.
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.
Occurrence and characteristic of microplastics in suspended particulate, a case study in street of Yogyakarta
Researchers examined microplastic contamination in road dust and suspended particles in the streets of Yogyakarta, Indonesia. They found that microplastics were present across sampling sites, with vehicle tires and road marking paint identified as primary sources. The study highlights urban transportation as a significant contributor to airborne microplastic pollution.
Occurrence and risk associated with urban road-deposited microplastics
Researchers collected and analyzed microplastics deposited on urban roads and found average concentrations ranging from 0.33 to 3.64 grams per square meter, with significant variation based on land use and particle size. Road-deposited microplastics were mainly fibers and fragments from tire wear and textile sources, and their risk assessment indicated moderate ecological concern. The study provides new insights into how different urban environments contribute to microplastic pollution through road runoff.
Temporal Distribution of Airborne Microplastics at an Urban Roadside
Researchers conducted a year-long sampling program for airborne microplastics at an urban roadside site in Zhengzhou, China, finding that traffic volume, seasonal variation, and meteorological conditions influenced the temporal distribution and polymer composition of atmospheric microplastics. Micro-Raman spectroscopy identified the dominant polymer types present in traffic-adjacent air.
Microplastic in an Arid Region: Identification, Quantification and Characterization on and Alongside Roads in Al Ain, Abu Dhabi, United Arab Emirates
Researchers characterized microplastic contamination in road dust, roadside soils, and stormwater runoff in Al Ain City, Abu Dhabi, identifying tire wear material, fibers, and degraded plastic bag and bottle fragments as dominant particle types and finding that Aeolian (wind-driven) transport is likely more important than water transport in this arid region.
Microplastics in road dust – characteristics, pathways and measures
Researchers reviewed the sources, characteristics, and transport pathways of road dust-associated microplastic particles (RAMP), identifying tyre wear rubber, polymer-modified bitumen, and thermoplastic road marking paints as the main contributors. The study found significant data gaps regarding the fate of RAMP in stormwater runoff and wastewater treatment systems.
Is road pavement wear a source of microplastics in stormwater runoff?
This study investigated whether road pavement wear is a measurable source of microplastics in stormwater runoff, distinct from the better-characterized tire wear contribution. Pavement-derived particles were identified in stormwater samples, confirming that road surface material itself contributes to microplastic loading in urban runoff alongside tire wear and other sources.
Atmospheric deposition as a pathway for microplastic transport to the marine environment: Temporal variation and environmental factors
A year-long study in a South Korean coastal bay found that atmospheric dry and wet deposition delivers a measurable and seasonally variable load of microplastics to the marine surface, with wind speed, rainfall, and dust events driving the temporal patterns. This confirms that the atmosphere is a significant and often overlooked transport route for microplastics from land to ocean.
Explorations of tire and road wear microplastics in road dust PM2.5 at eight megacities in China
Researchers measured tire and road wear microplastics in road dust from eight major Chinese cities. They found the highest concentrations in northern cities like Lanzhou and Xi'an, likely due to drier conditions increasing road friction, with levels ranging from 86 to 175 micrograms per gram. The study also found correlations between these microplastics and markers of cellular damage, suggesting potential health implications from exposure to tire-derived particles in urban road dust.
Deposition of Roadside Atmospheric Non-Tire Wear Microplastics: Characteristics and Influencing Factors
A year-long roadside study measured the atmospheric deposition of microplastics in two size fractions, finding deposition rates of 3–9 million particles per hectare per month for larger particles and identifying polymers including PP, PE, PS, PVC, PET, and nylon. Traffic was the dominant source of larger particles near the road, while wind patterns dispersed smaller particles more broadly from industrial sources. Roads are a major but underappreciated source of airborne microplastic deposition into surrounding soils and waterways, and this study quantifies that contribution with new precision.
Microplastics and tyre wear particles in urban runoff from different urban surfaces
Researchers measured microplastics and tire wear particles in stormwater runoff from roads, parking lots, and rooftops in Sweden. They found that road runoff carried the highest concentrations by far, with large variations between rainfall events. The findings highlight urban roads as a major source of microplastic pollution entering nearby waterways through stormwater.
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.
The influence of road vehicle tyre wear on microplastics in a high-traffic university for sustainable transportation
Researchers examined microplastic pollution from tire wear in a high-traffic university environment. The study found that microplastic concentrations correlated with traffic patterns, peaking on weekdays and declining on weekends, with irregularly shaped black particles composed primarily of polyethylene, polypropylene, and polybutadiene dominating the samples, along with metal contaminants concentrated near the main entrance.
Monitoring of microplastics in road dust samples from Myanmar and Taiwan
Researchers analyzed 82 road dust samples from Myanmar and Taiwan collected between 2014 and 2018, finding mean microplastic abundances of 63-285 particles/kg in Myanmar cities versus 555 particles/kg in Taiwan, with polyethylene and polypropylene dominant in Myanmar and polyvinyl chloride dominant in Taiwan.
First quantification and chemical characterization of atmospheric microplastics observed in Seoul, South Korea
Researchers conducted the first measurement of airborne microplastics across five outdoor sites in Seoul, South Korea, finding plastic particles everywhere from business districts to urban forests. Microplastic levels were higher in areas with more human activity and during weekdays versus weekends. Polypropylene and PET were the most common types, suggesting that everyday plastic products are a major source of airborne microplastic pollution in cities.