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Sinking characteristics of microplastics in the marine environment

Karkanorachaki Aikaterini, Syranidou Evdokia, Kalogerakis Nikos

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Extent14 pagesen
TitleSinking characteristics of microplastics in the marine environmenten
CreatorKarkanorachaki Aikaterinien
CreatorΚαρκανοραχακη Αικατερινηel
CreatorSyranidou Evdokiaen
CreatorΣυρανιδου Ευδοκιαel
CreatorKalogerakis Nikosen
CreatorΚαλογερακης Νικοςel
Content SummaryPlastic pollution is presently one of the most widespread and minimally understood problems. Vast quantities of plastics that have entered the marine environment should be detected floating on the sea surface are seemingly missing from the global budget. A vertical transfer process should be able to explain the imbalance in mass, as well as the findings of buoyant plastics at the bottom of the sea. These processes are of paramount importance to modelling efforts on the fate of plastics and microplastics in the marine environment. In order to fill this gap and develop correlations that could be used in modelling activities, we have designed and performed a 300-day long field experiment to monitor the interactions between microplastics (pellets and films) and the marine environment for five types of plastic polymers. Fouling, changes in diameter, gravimetric weight and sinking velocity were monitored and the correlations between them were studied using principal component analysis (PCA). Density, fouling and sample form (strip or pellet) were found to greatly affect the sinking characteristics of the polymers, leading to an increase or decrease in the sinking velocity. Finally, mathematical expressions for the estimation of fouling attachment and the sinking velocity with respect to time for each type of plastic were determined from the experimental data.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Date of Item2022-11-04-
Date of Publication2021-
SubjectMarine environmenten
SubjectSinking velocityen
Bibliographic CitationK. Karkanorachaki, E. Syranidou, and N. Kalogerakis, “Sinking characteristics of microplastics in the marine environment,” Sci. Total Environ., vol. 793, Nov. 2021, doi: 10.1016/j.scitotenv.2021.148526.en