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61,005 resultsShowing papers similar to Assessment of microplastics in Irish river sediment
ClearAssessment, characterization, and quantification of microplastics from river sediments
Researchers assessed microplastic contamination in sediments from 14 sites along the Kaveri River in South India, characterizing particle types, sizes, and polymer compositions to quantify the extent of microplastic pollution in this freshwater system.
Assessing microplastic distribution within infaunal benthic communities in a coastal embayment
Researchers assessed microplastic contamination in benthic infauna from 20 subtidal stations in Galway Bay, Ireland, finding an average of 0.79 particles per individual with fibers as the dominant type. Results were comparable to North Sea subtidal fauna studies, suggesting consistent microplastic uptake patterns across European coastal benthic communities.
Investigation of microplastic pollution in Torghabeh River sediments, northeast of Iran
Researchers investigated microplastic pollution in sediments of the Torghabeh River in northeast Iran. The study found an average concentration of 8 particles per 100 grams of dry sediment, with polystyrene being the most abundant polymer, and areas with greater human activity showing higher levels of microplastic contamination.
Occurrence, distribution and sources of microplastics in beach sediments of Miri coast, NW Borneo
Researchers characterized microplastic pollution in the surface sediments of 10 European rivers, detecting particles at all sites with concentrations ranging from 14 to 895 particles per kilogram of dry sediment. Urban rivers showed the highest contamination levels.
Occurrence of Microplastics in the Sediments of an Irish River and Their Effects on Nematode Survival and Biodiversity
Researchers analyzed microplastic contamination in sediments from an Irish river and tested their effects on nematode survival and biodiversity. Using infrared spectroscopy, they characterized the types and concentrations of microplastics present, with particular concern about their ability to absorb persistent organic pollutants. The study found that microplastic exposure affected nematode populations, suggesting potential broader impacts on freshwater sediment ecosystems.
Microplastics in the sediments of small-scale Japanese rivers: Abundance and distribution, characterization, sources-to-sink, and ecological risks
Researchers characterized microplastic pollution in sediments of four small-scale Japanese rivers, finding widespread contamination and identifying polymer types and potential sources, highlighting that even small river systems serve as microplastic transport pathways.
Extent and distribution of microplastic contamination in the benthic sediment of Turag river in Bangladesh
Researchers quantified microplastic contamination in benthic sediments of the Turag River in Bangladesh, finding widespread microplastic accumulation that poses threats to benthic communities and highlights a significant knowledge gap in freshwater sediment microplastic studies.
First evidence of microplastics in a freshwater river and their relationship to water quality
Researchers measured microplastic concentrations in a freshwater river used for recreational purposes and found a significant relationship between microplastic abundance and water physicochemical quality parameters, along with the presence of three organic compounds, providing evidence that microplastic pollution and water quality are closely linked.
The Deposition and Accumulation of Microplastics in Marine Sediments and Bottom Water from the Irish Continental Shelf
This study provided the first record of microplastic contamination in sediments on the Irish continental shelf, recovering plastic particles across nearly all sampled stations. The finding confirms that even relatively remote offshore sediments accumulate microplastic pollution, likely as a final sink for particles from the water column.
Occurrence, quantification and characterisation of microplastics in Godavari River, India
Researchers measured microplastic concentrations in the Godavari River in India, finding an average of 3.9 particles per liter across six sites, with fibers making up over 80% of particles and polypropylene and polyethylene being the most common polymer types. Urban areas had higher concentrations, and the presence of these plastics in a major river system poses risks to agriculture and human health through contaminated water and food sources.
Occurrence and characterization of microplastic content in the digestive system of riverine fishes
Researchers found microplastics in 93.8% of riverine fish examined, with polystyrene, polyethylene, and nylon being the most common polymer types concentrated near urban and industrial areas, and small particles (0.025-1 mm) predominating across species.
Occurrence, potential sources, and ecological risk assessment of microplastics in the inland river basins in Northern China
Researchers surveyed microplastic pollution in a typical urban river system in Northern China, examining both surface water and sediment samples. They found that river sediments contained dramatically more microplastics than surface water, acting as a sink for this pollution, with polypropylene and polyethylene being the most common types. The study suggests that small fiber and fragment-shaped particles under 0.5 mm dominate these environments, likely originating from everyday plastic products and wastewater discharge.
Source, Identification, Distribution, and Abundance of Microplastics in Rivers and Their Ecological Impacts: a Review
This review synthesizes global data on microplastic sources, identification methods, distribution in rivers, and ecological impacts, covering studies from the past two decades. It finds MPs widespread in riverine systems (up to 120 MPs/L in water, 13,607 MPs/kg in sediment), with FTIR and Raman spectroscopy as dominant identification tools and PE/PP fibers and fragments as the most common polymer types.
Prevalence of Microplastic Pollution in Freshwater Ecosystem: A Case Study of Thal Canal
Researchers surveyed microplastic contamination in a freshwater ecosystem in a case study region, measuring particle concentrations and types in water and sediment samples across multiple sites. Microplastics were detected at all sampling locations with higher concentrations near urban areas, and fibres and fragments were the dominant particle morphologies found.
Seasonal Abundance and Distribution Patterns of Microplastics in the Lis River, Portugal
Researchers investigated seasonal microplastic abundance and distribution in Portugal's Lis River Basin across nine sites, finding fibres and fragments dominated in both water and sediment, with polyethylene the most common polymer in water. Population density, plastic processing companies, and meteorological factors were all associated with seasonal variation in microplastic patterns.
Characterization and enumeration of microplastic pollution in three fish species of the Upper Mississippi River
Researchers found 891 microplastic particles across 281 fish from three species in the Upper Mississippi River, with fibers being the most common type and smaller fish containing proportionally more microplastics than larger ones. This confirms microplastic ingestion is widespread in freshwater fish — not just marine species — and the presence of styrene-isoprene, polyester, and ABS polymers highlights the diverse plastic sources contaminating major river systems.
Microplastic Contamination of Fine-Grained Sediments and Its Environmental Driving Factors along a Lowland River: Three-Year Monitoring of the Tisza River and Central Europe
Researchers analyzed microplastic contamination in fine-grained river sediments over three years (2020-2022) along a large river system, examining environmental driving factors including hydrology, land use, and sediment transport dynamics. The study found that hydrological and geomorphological processes are key determinants of where microplastics accumulate and are remobilized.
Investigation of microplastic contamination in the sediments of Noyyal River- Southern India
Researchers documented microplastic contamination across 15 sites in the urban Noyyal River in southern India, finding concentrations up to 6,500 particles per cubic meter in dried sediments, with fragments and fibers in a variety of colors the most common forms.
Abundance and Distribution of Microplastics in the Water and Riverbank Sediment in Malaysia – A Review
Microplastic abundance and distribution were surveyed in the water column and riverbank sediments of a Malaysian river. Results showed microplastics throughout the river system, with fiber shapes dominating in water and fragments more common in sediments, reflecting contributions from domestic wastewater and plastic litter.
Abundance, Distribution and Drivers of Microplastic Contaminant in Urban River Environments
Researchers surveyed microplastic distribution in urban river environments and identified key drivers of accumulation hotspots, finding that land use, hydrology, and infrastructure factors concentrated microplastics at predictable locations that could inform targeted management interventions.
Microplastic distribution and their abundance along rivers are determined by land uses and sediment granulometry
Researchers studied two river watersheds and found that microplastics were widespread in both water and sediment, with concentrations in water rising alongside increased urban land use. Interestingly, microplastics trapped in sediment were more influenced by the grain size of the riverbed than by human activity. The findings suggest that both human factors and natural river characteristics work together to shape where microplastics end up in freshwater systems.
Microplastics in freshwater environment: the first evaluation in sediment of the Vaal River, South Africa
Researchers conducted the first assessment of microplastic pollution in the Vaal River, South Africa, finding microplastics in 100% of sediment samples at an average of 463 particles per kilogram, with polyethylene and polypropylene as the dominant polymer types.
Microplastics contamination in sediments from Portuguese inland waters: Physical-chemical characterisation and distribution
Researchers characterized microplastic contamination in sediments from Portuguese inland freshwater systems, identifying particle shapes, sizes, and polymer types to establish baseline contamination levels and inform strategies for reducing plastic accumulation in freshwater environments.
Baseline Study on Microplastics in Indian Rivers under Different Anthropogenic Influences
Researchers collected microplastic samples from Indian rivers under different levels of anthropogenic influence and found MPs in all sites, with concentrations correlating with population density and industrial activity, providing one of the first systematic field datasets for major Indian river systems.