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Platt, S.M.* ; Haddad, I.E.* ; Pieber, S.M.* ; Huang, R.J.* ; Zardini, A.A.* ; Clairotte, M.* ; Suarez-Bertoa, R.* ; Barmet, P.* ; Pfaffenberger, L.* ; Wolf, R.* ; Slowik, J.G.* ; Fuller, S.J.* ; Kalberer, M.* ; Chirico, R.* ; Dommen, J.* ; Astorga, C.* ; Zimmermann, R. ; Marchand, N.* ; Hellebust, S.* ; Temime-Roussel, B.* ; Baltensperger, U.* ; Prévôt, A.S.*

Two-stroke scooters are a dominant source of air pollution in many cities.

Nat. Commun. 5:3749 (2014)
DOI PMC
Open Access Gold as soon as Publ. Version/Full Text is submitted to ZB.
Fossil fuel-powered vehicles emit significant particulate matter, for example, black carbon and primary organic aerosol, and produce secondary organic aerosol. Here we quantify secondary organic aerosol production from two-stroke scooters. Cars and trucks, particularly diesel vehicles, are thought to be the main vehicular pollution sources. This needs re-thinking, as we show that elevated particulate matter levels can be a consequence of 'asymmetric pollution' from two-stroke scooters, vehicles that constitute a small fraction of the fleet, but can dominate urban vehicular pollution through organic aerosol and aromatic emission factors up to thousands of times higher than from other vehicle classes. Further, we demonstrate that oxidation processes producing secondary organic aerosol from vehicle exhaust also form potentially toxic 'reactive oxygen species'.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Organic Aerosol Formation; Vehicle Emissions; Mass-spectrometry; Reaction Chamber; Smog Chamber; Secondary; Gasoline; Mopeds; Impact
ISSN (print) / ISBN 2041-1723
e-ISSN 2041-1723
Quellenangaben Volume: 5, Issue: , Pages: , Article Number: 3749 Supplement: ,
Publisher Nature Publishing Group
Publishing Place London
Non-patent literature Publications
Reviewing status Peer reviewed