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Träfflista för sökning "onr:"swepub:oai:research.chalmers.se:605d1fac-6ea0-4e3c-8f43-8934ff598002" srt2:(1992)"

Search: onr:"swepub:oai:research.chalmers.se:605d1fac-6ea0-4e3c-8f43-8934ff598002" > (1992)

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  • Löfgren, Lars, 1964, et al. (author)
  • Butenes and butadiene in urban air
  • 1992
  • In: The science of the total environment. ; 116, s. 195-201
  • Journal article (peer-reviewed)abstract
    • Samples of urban air hydrocarbons were taken on specifically made adsorbent cartridges and analysed by gas chromatography after thermal desorption. The four isomeric butenes and 1,3-butadiene were favourably resolved and separated from the abundant alkanes on an aluminium oxide PLOT column. The concentrations of butadiene, reflecting outdoor urban exposure, were in the range of 0.5-5 micrograms/m3. An approximate 1:4 ratio was observed between butadiene and propene which both originate predominantly from vehicle exhaust. The four butenes made up approximately 50% of the propene concentration in exhaust-polluted air, with methylpropene greater than 1-butene greater than trans-2-butene greater than cis-2-butene. Petrol vapour contributed less than exhaust but about five times more to the 2-butenes than to methylpropene and 1-butene. The highest exposure levels of butadiene and butenes were consistently observed in the vicinity of exhaust pipes and petrol-fuelled vehicles.
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  • Result 1-1 of 1
Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Petersson, Göran, 19 ... (1)
Löfgren, Lars, 1964 (1)
University
Chalmers University of Technology (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Medical and Health Sciences (1)
Year
1992 (1)Undo refine

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