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Publikationstyp
Wissenschaftlicher Artikel
Erscheinungsjahr
2022
Microplastics in the Danube River Basin: a first comprehensive screening with harmonized analytical approach
Microplastics in the Danube River Basin: a first comprehensive screening with harmonized analytical approach
Autor:innen
Herausgeber
Quelle
ACS ES & T water / American Chemical Society
2 (2022), Heft 7
2 (2022), Heft 7
Schlagwörter
Fluss, Monitoring
Zitation
Braun, Ulrike, Claus Gerhard Bannick, Marius Bednarz, Alexander Kerndorf, Marcus Lukas, Nathan Obermaier and Mathias Ricking, 2022. Microplastics in the Danube River Basin: a first comprehensive screening with harmonized analytical approach. ACS ES & T water / American Chemical Society [online]. 2022. vol. 2 (2022), Heft 7. DOI 10.60810/openumwelt-740. Verfügbar unter: https://openumwelt.de/handle/123456789/2760
Zusammenfassung englisch
In this study, carried out within the Joint Danube Survey 4, a comprehensive microplastic screening in the water column within a large European river basin from its source to estuary, including major tributaries, was realized. The objective was to develop principles of a systematic and practicable microplastic monitoring strategy using sedimentation boxes for collection of suspended particulate matter followed by its subsequent analysis using thermal extraction desorption-gas chromatography/mass spectrometry. In total, 18 sampling sites in the Danube River Basin were investigated. The obtained suspended particulate matter samples were subdivided into the fractions of >100 mikrom and <100 mikrom and subsequently analyzed for microplastic mass contents. The results showed that microplastics were detected in all samples, with polyethylene being the predominant polymer with maximum contents of 22.24 mikrog/mg, 3.23 mikrog/mg for polystyrene, 1.03 mikrog/mg for styrene-butadiene-rubber, and 0.45 mikrog/mg for polypropylene. Further, polymers such as different sorts of polyester, polyacrylates, polylactide, and natural rubber were not detected or below the detection limit. Additional investigations on possible interference of polyethylene signals by algae-derived fatty acids were assessed. In the context of targeted monitoring, repeated measurements provide more certainty in the interpretation of the results for the individual sites. Nevertheless, it can be stated that the chosen approach using an integrative sampling and determination of total plastic content proved to be successful. © 2022 The Authors