Microplastics in agricultural drainage water: A link between terrestrial and aquatic microplastic pollution

Bigalke, Moritz; Fieber, Milo; Foetisch, Alexandra; Reynes, Julien; Tollan, Peter (2021). Microplastics in agricultural drainage water: A link between terrestrial and aquatic microplastic pollution. Science of the total environment, 806, p. 150709. Elsevier 10.1016/j.scitotenv.2021.150709

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Microplastic (MP) contamination has been reported to be higher in terrestrial compared to aquatic environments. This is probably due to the fact that plastic items are mostly produced and used in terrestrial environments and have a longer residence time. However, there are several links between the terrestrial and aquatic environments. We analyzed drainage water samples from agricultural soils in the Seeland, a heavily drained agriculturally intensive area in Switzerland for its MP (>100 μm) concentration and composition. We foundMP in relevant numbers (mean 10.5 ± 9.5 N L−1). The polymers were mainly PA and PE, and the size distribution showed an exponential increase with decreasing particle size. The results show considerableMP concentrations in drainage water and imply a transport of MP in soils down to the drainage pipes. Given the large areas drained both in Switzerland and globally, it is proposed that MP leaching from soil can be a significant source of MP to aquatic ecosystems. Such a contribution should be considered when dealing with MP cycling on a local to global scale.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geography > Physical Geography > Unit Soil Science
08 Faculty of Science > Institute of Geological Sciences
08 Faculty of Science > Institute of Geography
08 Faculty of Science > Institute of Geography > Physical Geography

UniBE Contributor:

Bigalke, Moritz; Fieber, Milo Robin Jan; Foetisch, Alexandra; Reynes, Julien Thibault François and Tollan, Peter Michael Edward

Subjects:

500 Science > 550 Earth sciences & geology
900 History > 910 Geography & travel

ISSN:

0048-9697

Publisher:

Elsevier

Language:

English

Submitter:

Ariane Viviane Lisa Grimmer

Date Deposited:

22 Oct 2021 14:52

Last Modified:

28 Nov 2021 01:49

Publisher DOI:

10.1016/j.scitotenv.2021.150709

Uncontrolled Keywords:

Microplastic Soil Surface water Drainage Agriculture Transport

BORIS DOI:

10.48350/160237

URI:

https://boris.unibe.ch/id/eprint/160237

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