Search for dissertations about: "Secondary organic aerosols"

Showing result 1 - 5 of 14 swedish dissertations containing the words Secondary organic aerosols.

  1. 1. Analysis of tracer molecules from organic aerosols - Application of liquid phase microextraction to aerosol analysis

    Author : Murtaza Hyder; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Liquid membrane extraction; Secondary organic aerosols; Enrichment; Tracers; Hollow fiber liquid phase microextraction; Biomass burning; Organic carbon;

    Abstract : Airborne particulate matter is well known because of its adverse impacts on human health and its role in climate processes. In order to understand completely the role of aerosols in atmosphere, their chemical composition is of basic importance. READ MORE

  2. 2. Secondary Organic Aerosols: Composition, Gas-to-Particle Partitioning and Physical Properties

    Author : Anna Lutz; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Keywords : gas to particle conversion; volatility; secondary organic aerosols; FIGAERO; CIMS; monoterpenes; isoprene; SOA; BVOC;

    Abstract : Atmospheric aerosols influence our climate and air quality. Aerosol particles in the atmosphere are transformed through many different physical and chemical reactions. A substantial fraction of the particles in the atmosphere are of secondary origin, formed as a result of gas to particle conversion. READ MORE

  3. 3. Physical and Chemical Processes in the Formation of Biogenic secondary Organic Aerosols

    Author : Åsa M. Jonsson; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Keywords : Tropospheric chemistry; monoterpenes; ozonolysis; secondary organic aerosol SOA ; G-FROST; AIDA; humidity; temperature; hydroxyl radicals; volatility; pinonaldehyde; climate and health;

    Abstract : Vegetation emits a vast number of biogenic volatile organic compounds (BVOC). In the atmosphere they are oxidised, predominantly by O3, OH radicals or NO3 radicals, depending e.g. on chemical structure. READ MORE

  4. 4. Speeding up the Atmosphere : Experimental oxidation studies of ambient and laboratory aerosols using a flow reactor

    Author : Erik Ahlberg; MERGE - ModElling the Regional and Global Earth system; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Secondary organic aerosols; oxidation flow reactor; volatile organic compounds; climate;

    Abstract : Apart from gases, the air we breath consist of tiny, so called, aerosol particles. A cubic metre of air in a relatively clean environment can consist of several billion aerosol particles. The impact of these particles on human health and on climate is significant. READ MORE

  5. 5. Dual isotope (13C-14C) Studies of Water-Soluble Organic Carbon (WSOC) Aerosols in South and East Asia

    Author : Elena N. Kirillova; Örjan Gustafsson; Maria Cristina Facchini; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; atmospheric aerosols; water-soluble organic carbon; carbon isotopes; South Asia; East Asia; source apportionment; aerosol aging; Applied Environmental Science; tillämpad miljövetenskap;

    Abstract : Atmospheric aerosols may be emitted directly as particles (primary) or formed from gaseous precursors (secondary) from different natural and anthropogenic sources. The highly populated South and East Asia regions are currently in a phase of rapid economic growth to which high emissions of carbonaceous aerosols are coupled. READ MORE