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- Löfgren, Lars,1964Chalmers tekniska högskola,Chalmers University of Technology (author)
Butenes and butadiene in urban air
- Article/chapterEnglish1992
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- 1992
- electronicrdacarrier
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- LIBRIS-ID:oai:research.chalmers.se:605d1fac-6ea0-4e3c-8f43-8934ff598002
- https://research.chalmers.se/publication/72621URI
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- Language:English
- Summary in:English
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- 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.
Subject headings and genre
- NATURVETENSKAP Kemi Analytisk kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences Analytical Chemistry hsv//eng
- MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Farmakologi och toxikologi hsv//swe
- MEDICAL AND HEALTH SCIENCES Basic Medicine Pharmacology and Toxicology hsv//eng
- NATURVETENSKAP Geovetenskap och miljövetenskap Miljövetenskap hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Environmental Sciences hsv//eng
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- Petersson, Göran,1941Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)goranp (author)
- Chalmers tekniska högskola (creator_code:org_t)
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- In:The science of the total environment116, s. 195-201
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