Search for dissertations about: "Örjan Gustafsson"

Showing result 11 - 15 of 18 swedish dissertations containing the words Örjan Gustafsson.

  2. 11. Isotopic and Molecular Characterization of Incomplete Combustion Products in sub-Saharan Africa

    Author : Leonard Kirago; Örjan Gustafsson; Samuel Gaita; Sophie Haslett; Antti Hyvärinen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Air pollution; climate change; savanna; Nairobi; black carbon; Environmental Sciences; miljövetenskap;

    Abstract : Sub-Saharan Africa (SSA) is a global hotspot for incomplete combustion emissions from large-scale savanna fires, agricultural burning and growing city emissions. However, air pollution is understudied in the SSA region, resulting in a gap in the scientific understanding of regional emissions, source contributions, and impacts of air pollutants on regional climate and health. READ MORE

  4. 12. 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 : 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

  5. 13. Remobilization of terrestrial carbon across temporal and spatial scales deduced from the Arctic Ocean sediment record

    Author : Jannik Martens; Örjan Gustafsson; Birgit Wild; Richard Pancost; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arctic; climate change; permafrost; carbon; paleoclimate; Applied Environmental Science; tillämpad miljövetenskap;

    Abstract : Arctic warming is expected to trigger large-scale environmental change including remobilization of terrestrial organic carbon (terrOC). Permafrost and peatland systems contain more than twice as much carbon as the atmosphere, and may upon destabilization expose large amounts of their carbon to microbial decomposition and release climate-forcing greenhouse gases (GHG). READ MORE

  6. 14. Uptake Processes of Polychlorinated Biphenyls at the Base of the Pelagic Food Web

    Author : Anna Sobek; Örjan Gustafsson; Derek Muir; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; PCBs; plankton; equilibrium partitioning; uptake; aquatic food web; Environmental chemistry; Miljökemi;

    Abstract : Hydrophobic organic contaminants (HOCs) are persistent, toxic to biota and are known to bioaccumulate in food webs. In this thesis, polychlorinated biphenyls (PCBs) were used as model compounds to study the fate and transport of HOCs in the aquatic environment. READ MORE

  7. 15. Identification of brominated organic compounds in aquatic biota and exploration of bromine isotope analysis for source apportionment

    Author : Maria Unger; Örjan Gustafsson; Lillemor Asplund; Per Andersson; Sheryl Tittlemier; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Polybrominated dibenzo-p-dioxins PBDDs ; NMR spectroscopy; preparative capillary gas chromatography PCGC ; stable bromine isotope ratio; GC-multiple collector- ICP-MS; Environmental chemistry; Miljökemi; miljökemi; Environmental Chemistry;

    Abstract : Brominated organic compounds (BOCs) of both natural and anthropogenic origin are abundant in the environment. Most compounds are either clearly natural or clearly anthropogenic but some are of either mixed or uncertain origin. READ MORE