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61,005 resultsShowing papers similar to Accumulation and distribution of microplastics in coastal sediments from the inner Oslofjord, Norway
ClearFirst record of characterization, concentration and distribution of microplastics in coastal sediments of an urban fjord in south west Norway using a thermal degradation method
This study provided the first characterization of microplastic composition and distribution in coastal sediments of an urban fjord in southwest Norway using thermal degradation analysis, identifying polyethylene and polypropylene as dominant polymer types.
The fate of microplastic in marine sedimentary environments: A review and synthesis
A systematic review of 80 papers on microplastics in marine sediments found median concentrations varied widely by sediment environment, with fibers dominating many locations, and showed that sediment grain size and organic carbon content influence microplastic accumulation.
Microplastics in the surface sediments of Krossfjord-Kongsfjord system, Svalbard, Arctic
Researchers found microplastics in surface sediments of the Krossfjord-Kongsfjord system in the Svalbard Arctic, with average abundances of 721 and 783 pieces/kg respectively, dominated by polyethylene and polypropylene fibres. The spatial distribution suggested that fragmentation during transport contributes to the prevalence of smaller particles.
Different stories told by small and large microplastics in sediment - first report of microplastic concentrations in an urban recipient in Norway
Small and large microplastics showed different distribution patterns in sediments from an urban Norwegian fjord, with small particles more broadly dispersed, suggesting that particle size affects transport dynamics and deposition in receiving waters.
Unveiling small microplastics in Norwegian coastal sediment cores
Researchers collected five sediment cores along the Norwegian Coastal Current using a multi-corer sampler to investigate the high-resolution vertical distribution of small microplastics in coastal and sub-Arctic sediments, addressing a major gap in knowledge about microplastic depth profiles in European waters. The study, part of the JPI Oceans FACTS project, aimed to characterise how microplastics are transported and deposited through the water column into seafloor sediments.
Unveiling small microplastics in Norwegian coastal sediment cores
Researchers examined the vertical distribution of small microplastics in sediment cores collected along the Norwegian Coastal Current as part of the JPI Oceans FACTS project, using a Multi-corer system to assess how microplastics are transported and deposited in European to Arctic coastal waters.
Occurrence and sources of microplastics and polycyclic aromatic hydrocarbons in surface sediments of Svalbard, Arctic
Researchers found microplastics — exclusively in fiber form composed of polyester, rayon, and cellulose — in Arctic sediments from two Svalbard fjords, alongside polycyclic aromatic hydrocarbons, suggesting fisheries activity and textiles as primary pollution sources in this remote environment.
Diving into the Depths: Uncovering Microplastics in Norwegian Coastal Sediment Cores
Researchers analyzed microplastic vertical distribution in sediment cores from five sites along the Norwegian coast extending to Arctic waters, filling a gap in high-resolution depth profile data for European and Arctic sediments. Microplastics were found throughout core depths with concentrations generally increasing toward the surface in patterns reflecting historical plastic production growth.
Distribution and characterization of microplastics in marine sediments from coastal and offshore in South Korea
Researchers conducted an intensive survey of microplastic levels and distribution in marine sediments from coastal areas, recognizing the seafloor as the ultimate repository for plastic particles. Microplastic concentrations in sediments were highest near urban and industrial coastlines, with fibers and fragments as the most common types.
Occurrence and spatial distribution of microplastics in sediments from Norderney
Researchers surveyed sediments from Norderney in the North Sea and found widespread microplastic contamination, documenting spatial distribution patterns and particle characteristics across this tidally influenced coastal environment.
Diving into the deep: unveiling small microplastics in Norwegian coastal sediment cores
Researchers examined the vertical distribution of small microplastics in five sediment cores from the Norwegian Coastal Current, using advanced analytical methods down to 11 micrometers combined with radiometric dating, finding widespread microplastic presence across sediment layers up to 19 cm depth and providing insights into historical deposition rates.
Monitoring microplastics in the norwegian environment
Researchers presented results from Norway's first national microplastics monitoring program (MIKRONOR), reporting findings from over 600 individual samples collected across marine, freshwater, and urban environments, with notably high microplastic concentrations detected in the inner Oslo Fjord.
Anthropogenic particles in sediment from an Arctic fjord
Researchers developed two sampling designs to collect sediment subsamples from an Arctic fjord in Svalbard, finding anthropogenic particles including microplastics and dyed fibres, and contributing to the limited data on plastic contamination levels in Arctic environments.
Microplastic pollution in the surface sediment of Kongsfjorden, Svalbard, Arctic
Researchers investigated microplastic pollution in surface sediments of Kongsfjorden, Svalbard, documenting MP presence in this remote Arctic fjord and contributing to understanding of microplastic distribution in polar sediment compartments.
Microplastic abundance in beach sediments of the Kiel Fjord
Researchers assessed microplastic abundance in beach sediments at three sites in Kiel Fjord, Germany, finding plastics at all locations including one near a sewage treatment plant. The study highlights how multiple sources — recreational use, wastewater discharge, and plastic litter — contribute to microplastic accumulation in coastal sediments.
Spatial distribution of small microplastics in the Norwegian Coastal Current
Researchers mapped microplastic concentrations at multiple depths along the Norwegian Coastal Current, a major pathway carrying pollutants toward the Arctic. They found that the smallest microplastics, those under 50 micrometers, made up over 80% of all detected particles and were found at concentrations up to four orders of magnitude higher than larger microplastics, underscoring the importance of measuring these very small particles in ocean monitoring.
Distribution and characterization of microplastics in marine sediments from coastal and offshore in South Korea
Researchers conducted an intensive survey of microplastic distribution and characterization in marine sediments from coastal areas, confirming the seafloor as a long-term sink for plastic pollution. Contamination was highest near urban coastlines, with fibers and fragments accumulating preferentially in low-energy depositional environments.
Microplastic pollution in the Weser estuary and the German North Sea
Microplastics were characterized in water and sediment samples from the Weser estuary and German North Sea coast, with concentrations decreasing offshore and fibers dominating in all matrices, consistent with urban and industrial river inputs as the primary source of coastal North Sea microplastic contamination.
Microplastic Contaminants in the Sediment of the East Coast of Saudi Arabia
Researchers conducted the first measurement of microplastic contamination in sediments along four beaches on Saudi Arabia's east coast, finding 586 microplastic particles with fibers being the dominant shape (96%) and polyethylene terephthalate the most common polymer type, with abundance varying between tidal zones.
A review of microplastic distribution in sediment profiles
A review of microplastic distribution in marine sediment cores found that between 70–90% of environmental MPs accumulate in sediment profiles and that dated sediment cores can reconstruct historical MP deposition trends, with one Kuwaiti Bay core showing a 5-fold increase from 1951 to 2009.
Seasonal distribution and abundance of microplastics in the coastal sediments of north eastern Arabian Sea
Researchers documented seasonal variation in microplastic abundance along India's North Eastern Arabian Sea coast, finding 4,400 to 15,300 items per kilogram of dry sediment with fibers as the dominant form across ten identified polymer types.
Physical and anthropogenic drivers shaping the spatial distribution of microplastics in the marine sediments of Chilean fjords
Researchers examined microplastic distribution in marine sediments across 35 stations in Chilean Patagonian fjords. The study found microplastics in all samples, averaging 72.2 items per kilogram of dry sediment, with about 40% of the variability in distribution explained by ocean current velocity combined with proximity and intensity of local salmon farming activities.
Occurrence and distribution of microplastics in marine sediments along the Belgian coast
Researchers surveyed marine sediments along the Belgian coast and found microplastics distributed across all sampled sites, documenting their occurrence and characteristics in this heavily trafficked North Sea coastal environment.
Modelling the Influence from Biota and Organic Matter on the Transport Dynamics of Microplastics in the Water Column and Bottom Sediments in the Oslo Fjord
Researchers modeled how seasonal biological activity, biofouling, and zooplankton fecal pellet production affect the vertical transport and sediment burial of microplastics in Oslo Fjord. The model demonstrated that biotic factors significantly alter microplastic sinking rates and sediment accumulation patterns across seasons.