Sökning: "PCBs"

Visar resultat 26 - 30 av 116 avhandlingar innehållade ordet PCBs.

  1. 26. Identification and Characterisation of Hydroxylated PCB and PBDE Metabolites in Blood : Congener specific synthesis and analysis

    Författare :Tina Malmberg; Åke Bergman; Olov Sterner; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Environmental chemistry; Miljökemi;

    Sammanfattning : Hydroxylated polychlorinated biphenyls (OH-PCBs) are known metabolites of polychlorinated biphenyls (PCBs) in many mammalian, bird and fish species. Among those, certain OH-PCB congeners are strongly localised in the blood compartment of humans and wild animals. LÄS MER

  3. 27. Biological, physico-chemical and biogeochemical dynamics of hydrophobic organ compounds

    Författare :Johan Axelman; Deborah L. Swackhamer; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Biologi; zoologisk ekologi; Animal Ecology;

    Sammanfattning : This thesis presents new findings pertaining to several processes that govern the fate and effects of hydrophobic organic compounds (HOCs) in the environment. Two groups of HOCs, polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs), have been used as model compounds. LÄS MER

  4. 28. Organohalogen contaminants in humans with emphasis on polybrominated diphenyl ethers

    Författare :Daiva Meironyté Guvenius; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The occurrence and distribution of organohalogen compounds, including polybrominated diphenyl ethers (PBDEs), in humans was investigated. For this purpose, the previously used method for analysis of organochlorine compounds was modified for the analysis of PBDEs and hydroxylated metabolites of polychlorinated biphenyls (OH-PCBs) in breast milk, matemal and cord blood plasma, liver and adipose tissue. LÄS MER

  5. 29. Assessment of environmental contaminants' neurotoxicity : in vitro and in vivo experimental studies

    Författare :Wan Norhamidah Wan Ibrahim; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Accumulating evidence over several decades shows that environmental contaminants may lead to neurodevelopmental alterations. An essential prerequisite to prevention is recognition of a chemical‟s ability to harm the developing nervous system. LÄS MER

  7. 30. Persistent organic pollutants in the atmosphere - spatial and temporal variations

    Författare :Cecilia Backe; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tropical and temperate regions; global transport; temperature; latitudinal fractionation; fugacity; soil organic matter; soil-air exchange; washout ratio; rain; precipitation; atmosphere; spatial and temporal variations; DDT; PCB; persistent organic pollutants; polychlorinated biphenyls; Environmental chemistry; Miljökemi; Ecology; Ekologi; Chemistry; Kemi;

    Sammanfattning : In these thesis I have studied the spatial and temporal variations of PCBs in the atmosphere and in precipitation in southern Sweden. Further, soil-air exchange processes of PCBs were investigated. Finally, the long-range transport of PCBs and DDT was studied in the Baltic Sea region and in a tropical vs. a temporal region. LÄS MER