Traffic is one of the main emission sources of non-methane hydrocarbons (NMHC), which play a key role in the formation of ozone. Over the last year, airborne measurements of non-methane hydrocarbons have been performed with an on-line gaschromatograph over large cities such as Vienna and Milano, the polluted Lombardy region and moderately polluted regions such as the Swiss Plateau and alpine areas. This set of data has been analysed with respect to pollution level, composition, reactivity and contribution of emission sources in the different areas. The measured hydrocarbon concentrations coincide with the emission strengths given by the emission inventories of the respective regions. The alpine Mesolcina valley south of the Alps is strongly influenced by advected air polluted with hydrocarbons. The relative concentration of individual species to the sum of the measured hydrocarbons is similar in all regions, but show a few peculiarities specific to some regions.


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    Title :

    Airbone NMHC measurements under various pollution conditions


    Additional title:

    Kohlenwasserstoff-Messungen unter unterschiedlichen Luftverschmutzungsbedingungen


    Contributors:
    Dommen, J. (author) / Prevot, A.S.H. (author) / Polo, I. (author)

    Published in:

    Publication date :

    2001


    Size :

    11 Seiten, 4 Bilder, 4 Tabellen, 17 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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