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On particulate emissions from moving trains in a tunnel environment
KTH.
KTH.
Swedish National Road and Transport Research Institute, Society, environment and transport, Environment.ORCID iD: 0000-0001-6600-3122
Stockholms Universitet.
2018 (English)In: Transportation Research Part D: Transport and Environment, ISSN 1361-9209, E-ISSN 1879-2340, Vol. 59, p. 35-45Article in journal (Refereed) Published
Abstract [en]

Increasing attention is being paid to airborne particles in railway environments because of their potential to adversely affect health. In this study, we investigate the contribution of moving trains to both the concentration and size distribution of particles in tunnel environments. Real-time measurements were taken with high time-resolution instruments at a railway station platform in a tunnel in Stockholm in January 2013. The results show that individual trains stopping and starting at the platform substantially elevate the particulate concentrations with a mobility diameter greater than 100 nm. Two size modes of the particulate number concentrations were obtained. A mode of around 170 nm occurs when a train moves, while the other mode peaks at about 30 nm when there is no train in the station. By using principal component analysis (PCA), three contributing sources were identified on the basis of the classification of the sizes of the particles, namely railway-related mechanical wear, suspension due to the movement of trains and sparking of electric-powered components. It is concluded that the particulate matter released by individual moving trains is a key contributor to fine particles (100–500 nm) on the railway platform in a tunnel.

Place, publisher, year, edition, pages
Elsevier Ltd , 2018. Vol. 59, p. 35-45
Keyword [en]
Particulate matter, Rail traffic, Tunnel, Pollution concentration, Particle size distribution
National Category
Transport Systems and Logistics
Research subject
J00 Railway: General works, surveys, comprehensive works, J11 Railway: Environment
Identifiers
URN: urn:nbn:se:vti:diva-12760DOI: 10.1016/j.trd.2017.12.016ISI: 000428100700004Scopus ID: 2-s2.0-85040002421OAI: oai:DiVA.org:vti-12760DiVA, id: diva2:1206464
Available from: 2018-05-17 Created: 2018-05-17 Last updated: 2018-06-12Bibliographically approved

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Gustafsson, Mats

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CiteExportLink to record
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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf