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Chapter Chemical composition of microplastics floating on the Mediterranean Sea surface

PRILOZI 2022
Mikaël Kedzierski, Maialen Palazot, Lata Soccalingame, Mathilde Falcou-Préfol, Gabriel Gorsky, François Galgani, Stéphane Bruzaud, Maria Luiza Pedrotti

Summary

This study characterized microplastic contamination in the benthic sediments of a shallow tropical reef lagoon, finding widespread particle distribution influenced by seasonal monsoon-driven circulation patterns. Concentrations were highest in low-energy depositional zones, and polymer types reflected a mixture of locally derived and oceanic transport sources.

Polymers
PE PP PS

Main objective of this study was to describe chemical composition of MP collected in surface waters of Mediterranean Sea. Samples were collected by manta net during Tara Mediterranean expedition (June–Nov.2014). Our results pointed to certain homogeneity at Mediterranean Sea scale. Main polymers collected were polyethylene (PE) (67.3±2.4%), polypropylene (20.8±2.1%), polystyrene (3.0±0.9%). Still, discrepancies, confirmed by literature, were observed at mesoscale level. Thus, in North Tyrrhenian Sea, proportion of PE was significantly lower than average value of Mediterranean Sea (57.9±10.5%).

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