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- W4366692023 abstract "Microplastics can be detected in all environmental systems. Marine and terrestrial aquatic systems, especially the transported suspended solids, have often been the focus of scientific investigations in the past. Sediments of aquatic river systems, on the other hand, were often ignored due to the time-consuming sample preparation and analysis procedures. Spectroscopic measurement methods counting particle numbers are hardly suitable as detection methods, because there are plenty of natural particles next to a small number of microplastic particles. Integral methods, such as thermoanalytical methods are determining the particle mass independently of the inorganic components.In this study a workflow for sample preparation via density separation and subsequent analysis by thermal extraction desorption-gas chromatography/mass spectrometry (TED-GC/MS) is presented, which leads to representative and homogeneous samples and allows fast and robust microplastic mass content measurements suitable for routine analysis. Polymers were identified and quantified in all samples. Polyethylene and styrene-butadiene rubber are the dominant polymers, besides polypropylene and polystyrene. Overall, total polymer masses between 1.18 and 337.0 µg/g could be determined. Highest MP concentrations in riverbed sediment are found in sites characterized by low flow velocities in harbors and reservoirs, while MP concentrations in sandy/gravelly bed sediments with higher flow velocities are small.This article is protected by copyright. All rights reserved." @default.
- W4366692023 created "2023-04-24" @default.
- W4366692023 creator A5007327444 @default.
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- W4366692023 date "2023-05-01" @default.
- W4366692023 modified "2023-10-12" @default.
- W4366692023 title "Microplastics in sediments of the river Rhine ‐ A workflow for preparation and analysis of sediment samples from aquatic river systems for monitoring purposes" @default.
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- W4366692023 doi "https://doi.org/10.1002/appl.202200125" @default.
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