SwePub - sökning: onr:"swepub:oai:research.chalm...

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

Sökning: onr:"swepub:oai:research.chalmers.se:605d1fac-6ea0-4e3c-8f43-8934ff598002"

Sortera/gruppera träfflistan

Sortering: Träffar per sida:

Numrering	Referens	Omslagsbild	Hitta
1.	Löfgren, Lars, 1964, et al. (författare) Butenes and butadiene in urban air 1992 Ingår i: The science of the total environment. ; 116, s. 195-201 Tidskriftsartikel (refereegranskat)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.

Skapa referenser, mejla, bekava och länka

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