Microplastics in sea ice and seawater beneath ice floes from the Arctic Ocean.

Autor: Kanhai DK; Marine and Freshwater Research Centre, Galway Mayo Institute of Technology, Galway, Ireland. LaDaana.Kanhai@sta.uwi.edu.; Marine Biology and Ecology Research Centre, University of Plymouth, Plymouth, United Kingdom. LaDaana.Kanhai@sta.uwi.edu., Gardfeldt K; Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, Sweden., Krumpen T; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany., Thompson RC; Marine Biology and Ecology Research Centre, University of Plymouth, Plymouth, United Kingdom., O'Connor I; Marine and Freshwater Research Centre, Galway Mayo Institute of Technology, Galway, Ireland.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2020 Mar 19; Vol. 10 (1), pp. 5004. Date of Electronic Publication: 2020 Mar 19.
DOI: 10.1038/s41598-020-61948-6
Abstrakt: Within the past decade, an alarm was raised about microplastics in the remote and seemingly pristine Arctic Ocean. To gain further insight about the issue, microplastic abundance, distribution and composition in sea ice cores (n = 25) and waters underlying ice floes (n = 22) were assessed in the Arctic Central Basin (ACB). Potential microplastics were visually isolated and subsequently analysed using Fourier Transform Infrared (FT-IR) Spectroscopy. Microplastic abundance in surface waters underlying ice floes (0-18 particles m -3 ) were orders of magnitude lower than microplastic concentrations in sea ice cores (2-17 particles L -1 ). No consistent pattern was apparent in the vertical distribution of microplastics within sea ice cores. Backward drift trajectories estimated that cores possibly originated from the Siberian shelves, western Arctic and central Arctic. Knowledge about microplastics in environmental compartments of the Arctic Ocean is important in assessing the potential threats posed by microplastics to polar organisms.
Databáze: MEDLINE
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