Description: Das Projekt "Atmospheric Photooxidation of Oxygenated Organic Compounds: Products and Aerosol Formation" wird vom Umweltbundesamt gefördert und von Universität Wuppertal, Fachgruppe Chemie und Biologie, Arbeitsgruppe Physikalische und Theoretische Chemie durchgeführt. Field measurements have shown that oxygenated volatile organic compounds (oVOCs) are ubiquitous in the troposphere. Apart from emission into the atmosphere from biogenic and anthropogenic sources, oVOCs are also formed in the atmosphere via the oxidation of hydrocarbons. The presence of oVOCs in the troposphere strongly influences key atmospheric processes, which regulate photochemical smog formation and can also affect the oxidising capacity of the troposphere on both regional and global scales. oVOCs are degraded in the atmosphere via reaction with the oxidant species OH, NO3, O3 and to a lesser extend in marine and some industrial environments by Cl atoms. Recent work has shown that the ozonolysis of unsaturated oVOCs can contribute to aerosol formation. Information on the reaction mechanisms of the OH, NO3, Cl and O3 initiated oxidation of many types of oVOCs is still very fragmentary. The project concentrates on extending the kinetic and product database for the reactions of OH, Cl and O3 with selected oVOCs. The compounds to be investigated are unsaturated and saturated acids, esters and amides. This information will be used to construct atmospheric degradation schemes for the compounds due the reactions with OH and O3. Such schemes can be implemented into CTM models to assess potential atmospheric impacts of the compounds such as their contributions to the formation of tropospheric ozone.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Wuppertal ? Ozon ? Amid ? Photochemischer Smog ? Nitrat ? Alicyclischer Kohlenwasserstoff ? Kohlenwasserstoff ? VOC ? Oxidationsmittel ? Schadstoffwirkung ? Ester ? Aerosol ? Emissionsquelle ? Schadstoffemission ? Organische Verbindung ? Atmosphärische Wissenschaften ? Bodennahes Ozon ? Photochemische Reaktion ? Reaktionsmechanismus ? Troposphäre ? Messdaten ? Oxidation ? Messung ? Wirkungsmodell ? Reaktionskinetik ? Atmosphäre ? Schadstoffverhalten ? Atmosphärenchemie ? Umwelt ? Datenbank ? Globale Aspekte ? Datenerhebung ? Atmosphärischer Prozess ? Anthropogener Einfluss ? Produkt ? Krustenbildung ? Aerosolentstehung ?
Region: Nordrhein-Westfalen
Bounding box: 6.76339° .. 6.76339° x 51.21895° .. 51.21895°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2007-01-01 - 2008-12-31
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