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Characterization of Large Microplastic Debris in Beach Sediments in the Po Delta Area
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Researchers characterized large microplastic debris in beach sediments of the Po Delta area in Italy, identifying prevalent polymer types and linking contamination to river transport from the heavily populated Po River basin.
The use of single-use or disposable plastic objects has massively increased during the last few decades, and plastic has become the main type of litter found in marine environments. The Adriatic Sea is seriously prone to marine litter pollution, and it collects about one-third of all the freshwater flowing into the Mediterranean, mainly via the river Po. This study investigated the type and composition of large microplastic debris collected in different sites in the Po Delta area. Visual classification was performed by relevant criteria, while chemical composition was assessed by infrared spectroscopy. The main plastic fraction is composed of polyolefin (76%), followed by polystyrene (19%). This proportion roughly matches global plastic production, rescaled after excluding plastics with negative buoyancy: all the identified compounds have a specific gravity lower than that of the seawater. Fragments (irregularly shaped debris) represent the most abundant category fraction (85%), followed by pellets, which represent roughly 10% of the total. Overall, the results provided an insight into large microplastic pollution in beach sediments in the Po delta area.
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Abundance and distribution of large microplastics (1–5 mm) within beach sediments at the Po River Delta, northeast Italy
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Researchers studied the distribution of large microplastics (1-5 mm) across three driftlines at beaches in the Po River Delta in northeast Italy, finding abundances of 2.92 to 23.30 microplastics per kilogram dry weight with no consistent accumulation pattern across driftlines.
Temporal variation of floatable plastic particles in the largest Italian river, the Po
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Researchers found that plastic particle concentrations in Italy's Po River varied significantly over time in 2019, with 5,063 particles collected and 80.6% being fragments, providing temporal data on riverine plastic flux to the Adriatic Sea.
Microplastics and Phthalates in the Po River Delta: the Spatial Heterogeneity of the Plastic Associated Pollutant Pools
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Microplastics and phthalate plasticizers were surveyed in sediments of the Po River Delta in Italy, a major land-ocean transition zone for pollution. Both contaminants showed significant spatial variability, with higher concentrations near urban and agricultural inputs. The co-occurrence of microplastics and chemical additives in delta sediments raises concerns about multiple forms of pollution reaching the Adriatic Sea from one of Europe's most developed river systems.
Microplastics in inland and offshore sediments in the Apulo-Lucanian region (Southern Italy)
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Microplastics were detected in both inland river sediments and offshore continental shelf sediments in southern Italy, with characterization revealing diverse polymer types and morphologies reflecting both local and transported sources.
Hotspots of microplastic accumulation at the land-sea transition and their spatial heterogeneity: The Po River prodelta (Adriatic Sea)
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Using multibeam bathymetry, sediment provenance, and microFTIR analysis of a river delta, researchers documented how delta sedimentary systems sequester microplastics after flood events, identifying coastal transition zones as hotspots for plastic accumulation with heterogeneous spatial distribution.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.