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61,005 resultsShowing papers similar to Detection of Possible Polluting Microplastics in the Paragominas Stream, Municipality of the Same Name, Pará, Brazil
ClearAnalisis Pencemaran Mikroplastik Pada Air Dan Sedimen Di Sungai Paron, Desa Sidomulyo, Kota Batu, Jawa Timur
This study identified and characterized microplastic contamination in both water and sediment of Paron River in Batu City, Indonesia, a river within the Brantas River watershed. Plastic waste from nearby communities was found to be the primary source, with smaller organisms at the base of the food chain at risk of ingesting the particles.
Distribuição longitudinal, vertical e temporal de microplásticos no Igarapé do Mindu em Manaus, Amazonas
Researchers analyzed longitudinal, vertical, and temporal distribution of microplastics in the Mindu stream in Manaus, Brazil, finding that urban concentration, stream hydrodynamics, and riparian vegetation all influence microplastic contamination patterns in this Amazonian freshwater system.
Influence of Urbanization and Seasonality on Microplastics in a Small Brazilian Inland Stream
Researchers sampled a small Brazilian inland stream upstream and downstream of an urban center during dry and rainy seasons, finding urbanization significantly increased microplastic abundance from 1.7 to 2.6 particles per liter during the dry season, while rainfall effects were less consistent.
Review: Microplastic contamination in the Guandu River basin: The water supply reservoir of Rio de Janeiro metropolitan region (Southeastern Brazil) — R1/PR7
Researchers found microplastic concentrations of 6.1 ± 4.9 particles/m³ in the cold-dry season and 2.3 ± 1.1 particles/m³ in the warm-rainy season in the Guandu River basin of Rio de Janeiro, with polyethylene and polypropylene dominating and higher abundance linked to greater urban land use.
Habitat Integrity and Microplastic Contamination in Amazonian Streams: Assessment of Water, Sediment, and Fish and Identification of Predominant Polymers
Researchers assessed microplastic contamination in Amazonian streams by sampling water, sediment, and fish, and characterised predominant polymer types, finding that contamination was widespread across all environmental compartments regardless of habitat integrity, suggesting that even well-preserved stream habitats are not protected from microplastic pollution.
Is the Paraíba do Sul River colourful? Prevalence of microplastics in freshwater, south-eastern Brazil
Researchers investigated microplastic abundance, morphotypes, polymer composition, and color distribution in surface waters of the Paraiba do Sul River basin in southeastern Brazil, and examined how the hydrological cycle affected microplastic concentrations along the river stretch. The study found microplastics across all sampled sites with fibers as the dominant morphotype, and detected seasonal variation in abundance linked to river flow dynamics.
Presence of microplastics in surface waters and sediments of urban tropical river: A case study in the Karang Mumus River along Samarinda City, Indonesia
Researchers found microplastics in every water and sediment sample collected from an urban tropical river in Samarinda, Indonesia, with polyethylene being the most common plastic type and films being the most frequent shape. This first study of the river provides a baseline for understanding microplastic pollution in under-studied tropical urban waterways in Southeast Asia.
Microplastics in sediment samples from the mouth of the Amazon River
Researchers detected and characterized microplastics in sediment samples from the mouth of the Amazon River, collecting ten samples across the North and South Channels in October to address a significant data gap in Brazilian continental aquatic environments.
Effect of urbanization and water quality on microplastic distribution in Conceição Lagoon watershed, Brazil
A study of a Brazilian lagoon watershed found that urbanization significantly degraded water quality but did not clearly increase microplastic concentrations in tributary streams. Microplastic levels in the lagoon itself were correlated with indicators of wastewater discharge, and wind and rainfall influenced their distribution.
Microplastic pollution in streams spanning an urbanisation gradient
Researchers sampled microplastics in small streams across an urbanization gradient and found contamination at all sites, with concentrations comparable to those in larger rivers and lakes. Fragments and small particles between 63 and 500 micrometers were the most common forms detected. Surprisingly, catchment-scale factors like population density and stormwater overflows did not predict microplastic levels well, suggesting that local-scale sources may be more important for pollution in small streams.
Microplastic contamination in the Guandu River basin: The water supply reservoir of Rio de Janeiro metropolitan region (Southeastern Brazil)
Researchers characterised the extent and distribution of microplastic contamination throughout the Guandu River basin in Brazil, which supplies drinking water to a major urban area, quantifying MP concentrations and identifying dominant polymer types and morphologies to assess risks to the water supply.
Microplastic in an Urbanized Estuary on the Brazilian Equatorial Margin: Analysis of Contamination in Commercially Intent Fish, Water and Sediment in the Anil River
Researchers analyzed microplastic contamination in fish, water, and sediment samples from the Anil River estuary on the Brazilian Equatorial Margin, focusing on commercially important fish species in an urbanized estuarine environment.
Microplastic pollution of water and sediment from the Guarapiranga Reservoir, Metropolitan Region of São Paulo, Brazil
Researchers measured microplastic contamination in water and sediment from the Guarapiranga Reservoir in the Sao Paulo metropolitan region of Brazil, a major drinking water source. The study found diverse microplastic types and raises concerns about plastic pollution in urban water supply systems.
Microplastics and the Amazon: from the Rivers to the Estuary
This review described the main routes of microplastic input into Amazonian rivers and how local environmental characteristics affect the transformation and transport of plastics through the Amazon basin to the estuary.
Qualitative and quantitative analysis of microplastics in runoff sediments and their correlation with land use and occupation in an urban area in the city of Bauru-SP
Researchers analysed the qualitative and quantitative distribution of microplastics in urban runoff sediments across different land use categories in Bauru, Sao Paulo, Brazil, including social housing, traditional residential, high-income residential, commercial, and industrial zones. Results indicated that microplastic abundance in transported sediments correlated with land use intensity, with more densely populated and active areas generating higher microplastic loads entering urban drainage networks.
Microplastics on the Fluvio-estuarine Beaches of Cotijuba Island, Pará River Estuary (Brazil)
Microplastics were found on the fluvio-estuarine beaches of Cotijuba Island in Brazil's Pará River Estuary, with fragments and films as the dominant types. The study adds to evidence of widespread microplastic contamination in tropical South American coastal and estuarine environments.
Unraveling Microplastic Presence in Freshwater and Sediment of Rejoso River, Indonesia
Researchers investigated microplastic presence in water and sediment of the Rejoso River in Indonesia across 12 sampling sites, characterizing the types, abundances, and distribution patterns of microplastic particles in this tropical freshwater system.
Benthic macroinvertebrates and microplastic contamination in contrasting water quality environments of the Middle Tietê River basin (São Paulo, Brazil)
Researchers compared microplastic contamination in benthic invertebrates and sediments between a heavily polluted urban river and a cleaner tributary in São Paulo, Brazil. Higher microplastic concentrations were found near urban areas, confirming that human activity drives plastic accumulation in freshwater ecosystems.
A novel report on the occurrence of microplastics in Pekalongan River Estuary, Java Island, Indonesia
Researchers measured microplastic contamination in water and sediments of the Pekalongan River estuary in Indonesia, finding concentrations of 45.2-99.1 particles/L in water and 0.77-1.01 particles/g in sediment. Polystyrene, polyester, and polyamide were the dominant polymers, with fragments and films smaller than 1 mm accounting for the majority.
Preliminary Assessment of Plastic Litter and Microplastic Contamination in Freshwater Depositional Areas: The Case Study of Puerto Misahualli, Ecuadorian Amazonia
Researchers conducted a preliminary assessment of plastic litter and microplastics in sediments at a riverine depositional area in the Ecuadorian Amazon, finding low-density polyethylene bags as the dominant macroplastic and documenting microplastic presence in an upper Amazon basin location.
The Abundance and Characteristics of Microplastics in the Sediments of the Progo River of Yogyakarta, Indonesia
Researchers analyzed microplastic abundance and characteristics in sediments of the Progo River in Yogyakarta, Indonesia, finding microplastics throughout the river system. Fragment and fiber types dominated, reflecting the widespread plastic waste inputs characteristic of rapidly developing Indonesian urban areas.
Analysis of Microplastics in Water and Biofilm Matrices in Metro River, East Java, Indonesia
Researchers detected microplastics in both water and biofilm matrices across three stations of the Metro River in East Java, Indonesia, with the industrial activity station showing the highest contamination, and fibers being the most common particle shape identified.
Microplastic emission characteristics of stormwater runoff in an urban area: Intra-event variability and influencing factors
Researchers investigated microplastic emission characteristics in urban stormwater runoff from industrial and residential catchments. Microplastics were detected in concentrations of 54 to 639 particles per liter, with polypropylene and polyethylene being the dominant polymers and fragments the most common shape, and concentrations were higher after longer dry periods.
Microplastic in the sediments of a highly eutrophic tropical estuary
Researchers quantified and characterized microplastics in sublittoral sediments of Guanabara Bay, a highly eutrophic tropical estuary in Brazil, finding widespread contamination with fibers and fragments at concentrations reflecting the bay's heavy urbanization and poor waste management.