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Concentrations of t...
Concentrations of tire wear microplastics and other traffic-derived non-exhaust particles in the road environment
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- Järlskog, Ida, 1991 (författare)
- Statens väg- och transportforskningsinstitut,Miljö, MILJÖ,Chalmers University of Technology, Sweden,Statens Väg- och Transportforskningsinstitut (VTI),The Swedish National Road and Transport Research Institute (VTI),Chalmers tekniska högskola
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- Jaramillo-Vogel, David (författare)
- Particle Vision GmbH, Switzerland
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- Rausch, Juanita (författare)
- Particle Vision GmbH, Switzerland
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- Gustafsson, Mats, 1966- (författare)
- Statens väg- och transportforskningsinstitut,Miljö, MILJÖ,Statens Väg- och Transportforskningsinstitut (VTI),The Swedish National Road and Transport Research Institute (VTI)
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- Hvitt Strömvall, Ann-Margret, 1963 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Water Environment Technology, Department of Architecture and Civil Engineering, Chalmers University of Technology, Sweden
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- Andersson-Sköld, Yvonne, 1957 (författare)
- Statens väg- och transportforskningsinstitut,Miljö, MILJÖ,Chalmers tekniska högskola,Chalmers University of Technology,Statens Väg- och Transportforskningsinstitut (VTI),The Swedish National Road and Transport Research Institute (VTI)
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: Environment International. - : Elsevier BV. - 0160-4120 .- 1873-6750. ; 170
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://doi.org/10.1...
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https://vti.diva-por... (primary) (Raw object)
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https://research.cha...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Tire wear particles (TWP) are assumed to be one of the major sources of microplastic pollution to the environment. However, many of the previously published studies are based on theoretical estimations rather than field measurements. To increase the knowledge regarding actual environmental concentrations, samples were collected and analyzed from different matrices in a rural highway environment to characterize and quantify TWP and other traffic-derived non-exhaust particles. The sampled matrices included road dust (from kerb and in-between wheeltracks), runoff (water and sediment), and air. In addition, airborne deposition was determined in a transect with increasing distance from the road. Two sieved size fractions (2–20 µm and 20–125 µm) were analyzed by automated Scanning Electron Microscopy/Energy Dispersive X-ray spectroscopy (SEM/EDX) single particle analysis and classified with a machine learning algorithm into the following subclasses: TWP, bitumen wear particles (BiWP), road markings, reflecting glass beads, metals, minerals, and biogenic/organic particles. The relative particle number concentrations (%) showed that the runoff contained the highest proportion of TWP (up to 38 %). The share of TWP in kerb samples tended to be higher than BiWP. However, a seasonal increase of BiWP was observed in coarse (20–125 µm) kerb samples during winter, most likely reflecting studded tire use. The concentration of the particle subclasses within airborne PM80-1 decreases with increasing distance from the road, evidencing road traffic as the main emission source. The results confirm that road dust and the surrounding environment contain traffic-derived microplastics in both size fractions. The finer fraction (2–20 µm) dominated (by mass, volume, and number) in all sample matrices. These particles have a high potential to be transported in water and air far away from the source and can contribute to the inhalable particle fraction (PM10) in air. This highlights the importance of including also finer particle fractions in future investigations.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Miljöanalys och bygginformationsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Environmental Analysis and Construction Information Technology (hsv//eng)
Nyckelord
- TRWP
- Bitumen particles
- Road markings
- SEM/EDX
- Metal particles
- Microplastics
- Machine learning
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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