Traffic-related microplastic particles, metals, and organic pollutants in an urban area under reconstruction

Järlskog, Ida; Strömvall, Ann-Margret Hvitt; Magnusson, Kerstin; Galfi, Helen; Björklund, Karin; Polukarova, Maria; Garção, Rita; Markiewicz, Anna; Aronsson, Maria; Gustafsson, Mats; Norin, Malin; Blom, Lena; Andersson-Sköld, Yvonne

doi:10.1016/j.scitotenv.2021.145503

Cited by 107 publications

(44 citation statements)

References 57 publications

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“…However, the authors did not report the primary particle size distribution for TRWPs but rather indicated the TRWP volume in different size bins up to 80 μm compared to other particle types. Other researchers have characterized TRWPs by size-fractionated analysis with various techniques including optical and tactile identification or size fractionation/mass techniques. − ,, Roychand et al (2020) used optical properties to identify black particles in a road dust sample collected in Australia and utilized SEM/EDX and FTIR to confirm tread properties in a subset of particles; however, no further information regarding particle size characteristics was reported . In contrast, the TRWPs analyzed in the present study were identified and characterized via SPA that differentiated TRWPs versus other particle sources and allowed for the determination of the primary particle size distribution and aspect ratio in a road dust sample.…”

Section: Resultsmentioning

confidence: 85%

“…The size distribution of TRWPs in road dust or samples collected near the road can differ depending on many variables including speed/driving conditions, tire composition, road surface, and climate, as well as protocols for collection, processing, and method of TRWP analysis. ,,,,,, Previous researchers utilized an active sampler and characterized the road particle size distribution by using transmission optical microscopy, and they observed a range between 4 and 265 μm with a mode at 25 μm by number and 50 μm by volume (samples were sieved at 150 μm) . However, differentiation from non-TRWP particles was not possible.…”

Section: Resultsmentioning

confidence: 99%

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Characterization of Individual Tire and Road Wear Particles in Environmental Road Dust, Tunnel Dust, and Sediment

Kovochich¹,

Parker²,

Oh³

et al. 2021

Environ. Sci. Technol. Lett.

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Tire and road wear particles (TRWPs) are generated from friction between tires and the road and contain polymer tread with pavement encrustations. Single particle analysis (SPA) of tire source contribution in environmental samples has been limited by interferences in common spectroscopic polymer techniques. This study extends a density separation and chemical mapping protocol for road simulator generated TRWPs toward the identification and characterization of individual TRWPs in more complex road dust, roaddust-spiked artificial sediment, tunnel dust, and environmental settling pond sediment samples. TRWPs were identified by a combination of physical (elongated/round shape with variable amounts of mineral encrustation) and elemental surface characteristics [colocalization of (S + Zn/Na) ± (Si, K, Mg, Ca, and Al)]. Organic surface markers (C 7 H 7 + ), overlapping FTIR spectra with tread reference material, and resistance to heat-induced deformation were selectively used to confirm particle identification. The TRWP size displayed an increasing average trend of 54, 158, and 267 μm by number (94, 224, and 506 μm by volume) in tunnel dust, road dust, and environmental sediment, respectively. TRWP size distributions within road dust 10× diluted with artificial sediment agreed with those of pure road dust. Our SPA methodologies determined the size distribution of TRWPs in environmental sample types with increasing sample complexity.

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Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Characterization of Individual Tire and Road Wear Particles in Environmental Road Dust, Tunnel Dust, and Sediment

Kovochich¹,

Parker²,

Oh³

et al. 2021

Environ. Sci. Technol. Lett.

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“…When we move into details about the pollution responsible by the tyre industry, it is observed that around 63–96% of the total environmental impact occurs in the product use phase mainly due to the rolling resistance or friction offered by the tyres [ 10 ]. Also, about one-third of the fuel energy was utilized to overcome friction in the engine system, transmission system, auxiliary equipment, tyre–road contact and brake contact [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Recent trends in industrial and academic developments of green tyre technology

et al. 2022

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Growing natural calamities as a consequence of global warming are one of the most pondering subjects today. The exponential growth of environmental pollution due to unscientific human exploitation of natural resources is considered the prime reason for the harsh responses of nature. Researchers from various fields of industry and academia are working hard to develop and implement products/technologies that are environmentally friendly or less harmful to the ecosystem. Material researchers, specifically those working in the automobile sector are also not behind in search of green products from eco-friendly raw materials and production methods. The automobile industry is collectively responsible for around 40% of global pollution in terms of greenhouse gas emissions. Out of which around 20–30% is originating from tyre production and its end-use. In this view, tyre production from eco-friendly raw materials and technologies that have minimum hazardousness to the environment is a hot research topic today. A few products in the market with “green” tags and many are in the pipeline for the recent future. This review summarises a detailed discussion of the emerging green technologies for tyre production and depicted comprehensive data from the available literature. The paper has been drafted from a well-balanced academic and industrial point of view since the researchers from both sectors are working in harmony for a better future for green tyre technology.

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“…Especially, the particles of small size float in the air to cause air pollution as fine dust or they enter the aquatic environment to cause water pollution [ 6 ]. Therefore, TRWPs have been considered a kind of microplastics and a pollutant [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Classification and Characterization of Tire-Road Wear Particles in Road Dust by Density

Jung

Choi

2022

Polymers

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Tire treads are abraded by friction with the road surface, producing tire tread wear particles (TWPs). TWPs combined with other particles on the road such as road wear particles (RWPs) and mineral particles (MPs), forming tire-road wear particles (TRWPs). Dust on an asphalt pavement road is composed of various components such as TRWPs, asphalt pavement wear particles (APWPs), MPs, plant-related particles (PRPs), and so on. TRWPs have been considered as one of major contaminants produced by driving and their properties are important for study on real abrasion behaviors of tire treads during driving as well as environmental contamination. Densities of the TRWPs are totally dependent on the amount of the other components deposited in the TWPs. In this study, a classification method of TRWPs in the road dust was developed using density separation and the classified TRWPs were characterized using image analysis and pyrolytic technique. Chloroform was used to remove APWPs from mixture of TRWPs and APWPs. TRWPs were found in the density range of 1.20–1.70 g/cm3. By decreasing the particle size of the road dust, the TRWP content in the road dust increased and its density slightly tended to increase. Aspect ratios of the TRWPs varied and there were many TRWPs with low aspect ratio below 2.0. The aspect ratio range was 1.2–5.2. Rubber compositions of the TRWPs were found to be mainly NR/SBR biblend or NR/BR/SBR triblend.

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Traffic-related microplastic particles, metals, and organic pollutants in an urban area under reconstruction

Cited by 107 publications

References 57 publications

Characterization of Individual Tire and Road Wear Particles in Environmental Road Dust, Tunnel Dust, and Sediment

Characterization of Individual Tire and Road Wear Particles in Environmental Road Dust, Tunnel Dust, and Sediment

Recent trends in industrial and academic developments of green tyre technology

Classification and Characterization of Tire-Road Wear Particles in Road Dust by Density

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