20.500.12556/RUL-153025 Insights into the shape-dependent effects of polyethylene microplastics on interactions with organisms, environmental aging, and adsorption properties The shape-dependent effects of microplastics have been studied in the context of ingestion but have not been considered in other environmental processes. Therefore, we investigated how the shape of polyethylene microplastics (spheres, fragments, and films) affects interactions with plants, aging, and their adsorption properties. The shape had no effect on the growth rate and chlorophyll content of duckweed Lemna minor, but the fragments strongly adhered to the plant biomass and reduced the root length. The adsorption process of the model organic compound (methylene blue dye) was described by the same kinetic model for all shapes—the experimental data best fit the pseudo-second order model. However, twice as much methylene blue was adsorbed on films as on fragments and spheres. During environmental aging, most biofilm developed on films. The biofilm on spheres contained significantly less photosynthetic microorganisms, but twice as much extracellular polymeric substances (EPS) as on fragments and films. This suggests that the attachment of microorganisms to spherical particles is limited and therefore more intensive production of EPS is required for stable biofilm formation. From the results of this study, it is evident that the shape of microplastics significantly affects not only ecotoxicity but also other environmentally relevant processes. microplastics polyethylene toxicity duckweed adhesion adsorption aging mikroplastika polietilen strupenost mala vodna leča adhezija adsorpcija staranje true false true Angleški jezik Slovenski jezik Neznano 2023-12-14 14:40:38 2023-12-14 14:40:40 2023-12-15 03:49:27 0000-00-00 00:00:00 2023 0 0 10 str. Vol. 13, art. 22147 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-01-01 504.5:678.742.2 2045-2322 10.1038/s41598-023-49175-1 177409283 RAZ_Rozman_Ula_2023.pdf RAZ_Rozman_Ula_2023.pdf 1 4E6941DC36BA40D6B866934E4B3E9A57 c2ab4066a43d86cfad34bff99f92cd06beb7f3fb5a9ca0e0dda864dcc9c6d03e 3b1f9ba4-9a87-11ee-91f8-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178812 https://www.nature.com/articles/s41598-023-49175-1 1 5f739571-9a86-11ee-91f8-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=178811 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0