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Visar resultat 6 - 8 av 8 avhandlingar som matchar ovanstående sökkriterier.

1. 6. Fate of Pharmaceuticals and Their Transformation Products in Rivers : An integration of target analysis and screening methods to study attenuation processes

   Författare :Zhe Li; Anna Sobek; Michael McLachlan; Michael Radke; Kathrin Fenner; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pharmaceuticals; transformation products; fate; river; suspect screening; non-target screening; Applied Environmental Science; tillämpad miljövetenskap;

   Sammanfattning : Pharmaceuticals are environmental contaminants causing steadily increasing concern due to their high usage, ubiquitous distribution in the aquatic environment, and potential to exert adverse effects on the ecosystems. After being discharged from wastewater treatment plants (WWTPs), pharmaceuticals can undergo transformation processes in surface waters, of which microbial degradation in river sediments is considered highly significant. LÄS MER

3. 7. Contaminated sediments: Methods to assess release and toxicity of organic chemical mixtures

   Författare :Lukas Mustajärvi; Anna Sobek; Jarkko Akkanen; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sediment; Hydrophobic organic contaminants; Flux; Bioturbation; Passive sampling; Passive dosing; Mixture toxicity; Applied Environmental Science; tillämpad miljövetenskap;

   Sammanfattning : Bottom sediments around the world store large amounts of legacy hydrophobic organic contaminants (HOCs), forming mixtures of unknown chemical composition. Primary emissions to the environment of many HOCs have been reduced as a consequence of regulation. LÄS MER

4. 8. In silico methods to prioritize chemicals with high exposure potential

   Författare :Efstathios Reppas Chrysovitsinos; Matthew MacLeod; Anna Sobek; Michael Matthies; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; free energy relationship; solvation parameters; polymers; materials; partitioning; octanol; Arctic contaminants; AMAP; POPs; Stockholm Convention; vPvB; REACH; OECD; QSAR; planetary boundaries; persistence; bioaccumulation; long-range transport; Applied Environmental Science; tillämpad miljövetenskap;

   Sammanfattning : Chemicals offer a wide range of desired functions and are used in a variety of consumer goods and industrial sectors. The number of individual synthetic organic chemicals produced and the total global chemical production volume are increasing. LÄS MER