Microplastics in freshwater systems: origin, fate and impact : a methodological research work Felsing, Stefanie , 1984- (VerfasserIn) Forster, Stefan (AkademischeR BetreuerIn) Hofmann, Thilo (AkademischeR BetreuerIn) Universität Rostock (Grad-verleihende Institution) Universität Rostock Mathematisch-Naturwissenschaftliche Fakultät (Grad-verleihende Institution) Text theses Text Hochschulschrift 2018 2018 eng electronic resourceremoteComputermedienOnline-Ressource1 Online-Ressource Microplastics are separated from environmental samples based on their electrostatic behavior. They were taken with a continuous flow centrifuge and by sediment cores. The effects of different plastics on Lumbriculus variegatus were determined and whether the plastic types dissolve poisonous additives in the water phase. The results of a sediment contact test show that PVC had a negative effect on mortality with an LC 50 of 1.7 mg/g dw. The glycogen content of the surviving worms show that only the increasing concentration of PVC causes a negative effect. Additives were leached of the plastics.<eng> vorgelegt von: Stefanie Felsing aus Rostock GutachterInnen: Stefan Forster (Universität Rostock, Lehrstuhl für Meeresbiologie) ; Thilo Hofmann (Universität Wien, Umweltingenieurwissenschaften) Dissertation Universität Rostock 2018 570 570 43.50 http://purl.uni-rostock.de/rosdok/id00002449 https://doi.org/10.18453/rosdok_id00002449 https://nbn-resolving.org/urn:nbn:de:gbv:28-rosdok_id00002449-1 https://d-nb.info/1293656208/34 Microplastics in freshwater systems--(DE-627)1024530795 urn:nbn:de:gbv:28-rosdok_id00002449-1 doi: 10.18453/rosdok_id00002449 oclc: 1135070907 ppn: (DE-627)1663758921