We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Microplastic pollution responses to spatial and seasonal variations and water level management in a polymictic tropical reservoir (São Paulo, Brazil)
ClearMicroplastic 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.
Macroplastics in the Guarapiranga reservoir (São Paulo, Brazil): estimating the generation of microplastics
This study identified and quantified macroplastics and microplastics in the Guarapiranga Reservoir in Sao Paulo, Brazil, a major public water supply reservoir, assessing contamination levels and sources. Plastics of multiple size classes were detected in the reservoir, highlighting contamination risks for a water body used to supply drinking water to millions of people.
Spatiotemporal variation in microplastic contamination along a subtropical reservoir shoreline
Researchers tracked microplastic contamination along the shoreline of a subtropical reservoir over two years and found that microplastic abundance was higher near urban areas and varied with season, with storm-related inputs creating significant temporal spikes.
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.
[Spatial and Temporal Variation Characterization and Variability of Microplastics in Water-borne River and Reservoir].
A study comparing microplastic levels in a river and a reservoir used as drinking water sources in Guangdong, China found meaningful differences in contamination patterns across seasons and locations. The findings underscore that drinking water source protection strategies need to account for microplastic pollution, as these particles can enter the water supply before treatment.
Macroplastics in the Guarapiranga reservoir (São Paulo, Brazil): estimating the generation of microplastics
Researchers surveyed macroplastics in the Guarapiranga Reservoir, a major public water supply in Sao Paulo, Brazil, and estimated the rate of microplastic generation from their fragmentation. Large plastic debris in the reservoir was found to be a significant in-situ source of secondary microplastics.
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.
Integrated occurrence of contaminants of emerging concern, including microplastics, in urban and agricultural watersheds in the State of São Paulo, Brazil
Researchers measured contamination from microplastics and other emerging pollutants in both urban and agricultural watersheds in the Brazilian state of Sao Paulo. They found microplastics in all sampled locations, along with pesticides, caffeine, and other chemicals, with pollution patterns differing between urban and farming areas. The study shows that microplastic contamination is widespread in Brazilian water systems used for drinking and irrigation, contributing to human exposure through multiple pathways.
Microplastics in water from the confluence of tropical rivers: Overall review and a case study in Paraiba do Sul River basin
Researchers surveyed microplastic contamination at river confluences in the Paraiba do Sul River basin, Brazil's most important southeastern watershed serving millions of people. They found microplastics throughout the river system, with higher concentrations near industrial and densely populated areas. Since this river basin supplies drinking water and supports agriculture for a large population, the contamination raises direct concerns about human microplastic exposure.
Microplastic occurrence and densities in small subtropical reservoirs of Southern Africa
Researchers measured microplastic levels across seasons in small reservoirs in southern Africa, finding that microplastic concentrations were higher during the dry season and in reservoirs near areas with greater human activity. The study establishes baseline data for a region where plastic pollution research is scarce and warns that contamination could worsen without targeted intervention.
Microplastic contamination assessment in water and economic fishes in different trophic guilds from an urban water supply reservoir after flooding
Microplastic contamination was assessed in water and economically important fish from an urban reservoir after flooding, with flood events significantly increasing microplastic concentrations and affecting distribution across trophic guilds, highlighting how flood pulses transport and redistribute plastic pollution in drinking water systems.
Microplastic Pollution in Water and Sediments in a Public Supply Reservoir in Presidente Prudente (SP), Brazil
Researchers surveyed microplastic contamination in a public water supply reservoir in Brazil and identified 663 particles, predominantly fibers, with the most common polymers being PET, polypropylene, and polyethylene. The total estimated microplastic load in the reservoir was approximately 15.7 million particles, with higher concentrations near urbanized areas, suggesting untreated domestic and industrial effluents as primary contamination sources.
Review: Microplastic contamination in the Guandu River basin: The water supply reservoir of Rio de Janeiro metropolitan region (Southeastern Brazil) — R1/PR8
Researchers found microplastic contamination throughout the Guandu River basin in Brazil, which supplies water to the Rio de Janeiro metropolitan region, with abundance averaging 6.1 particles/m3 in the cold-dry season and 2.3 particles/m3 in the warm-rainy season, dominated by fragments and fibers across 11 identified polymer types.
Seasonal occurrence of microplastics in sediment of two South African recreational reservoirs
Researchers tracked seasonal microplastic levels in sediments from two recreational reservoirs in South Africa, one near agricultural land and the other near populated areas. They found microplastics at all sites, with significantly higher concentrations near areas of greater human activity, particularly during the hot-dry season. The study highlights that even inland freshwater systems in regions with relatively low industrial presence are not immune to microplastic pollution.
Effect of urbanization and water quality on microplastic distribution in Conceição Lagoon watershed, Brazil
Researchers assessed microplastic distribution across urbanized and non-urbanized tributaries of Conceicao Lagoon watershed in Brazil. The study found that while urbanization significantly affected water quality parameters, it did not always correspond to higher microplastic concentrations. Evidence indicates that microplastic pollution in freshwater systems is influenced by multiple factors beyond urbanization alone, complicating simple predictions about contamination patterns.
Global meta-analysis of microplastic contamination in reservoirs with a novel framework
Microplastic abundance in reservoirs worldwide varied over 2-6 orders of magnitude, with small particles (<1 mm) comprising over 60% of total counts; geographic location, seasonal variation, and land-use type were the main drivers, and current mitigation policies were found insufficient.
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.
How natural and anthropogenic factors should drive microplastic behavior and fate: The scenario of Brazilian urban freshwater
This review examines the factors driving microplastic contamination in Brazilian freshwater systems, including the country's massive plastic production and limited recycling infrastructure. Researchers highlight that more than half of post-consumer plastic packaging in Brazil goes unmonitored, and most microplastic research has focused on marine environments while freshwater data remains scarce. The study calls for more systematic monitoring of Brazilian rivers and lakes, especially given the country's continental-scale waterways and diverse ecosystems.
Review: Microplastic contamination in the Guandu River basin: The water supply reservoir of Rio de Janeiro metropolitan region (Southeastern Brazil) — R0/PR2
Researchers investigated microplastic contamination in the Guandu River basin — the primary water supply for the Rio de Janeiro metropolitan region — collecting surface water samples at 11 sites using Manta trawl nets in two seasonal periods. They found MP abundances of 6.1 particles/m3 in the cold-dry season and 2.3 particles/m3 in the warm-rainy season, with fragments and fibres dominant, polyethylene and polypropylene the most common polymers, and no significant seasonal differences in overall abundance.
Spatial and temporal distribution of microplastics in water and sediments of a freshwater system (Antuã River, Portugal)
This study tracked the spatial and temporal distribution of microplastics in water and sediments of a freshwater lake, finding seasonal variation in microplastic concentrations and identifying local land use and runoff as key drivers of contamination patterns.
Presence and Quantification of Microplastic in Urban Tap-Water
Researchers collected 32 tap water samples from two areas of Brasília, Brazil and found microplastic contamination in the city's drinking water. The study adds to growing global evidence that microplastics are present in municipal water supplies, raising concerns about chronic human exposure.
Recommendation: Microplastic contamination in the Guandu River basin: The water supply reservoir of Rio de Janeiro metropolitan region (Southeastern Brazil) — R0/PR4
Researchers assessed microplastic contamination in the Guandu River basin — the primary water supply reservoir for the Rio de Janeiro metropolitan region — collecting surface water samples at 11 sites across two seasons and identifying 11 polymer types via micro-FTIR, with abundances of 6.1 particles/m3 in the cold-dry season and 2.3 particles/m3 in the warm-rainy season.
Interconnected impacts of water resource management and climate change on microplastic pollution and riverine biocoenosis: A review by freshwater ecologists
Researchers reviewed how river hydrology, water resource management, and climate change interact to influence microplastic pollution in freshwater ecosystems. They found that floods can flush microplastics from catchments, while reservoirs act as both sinks and sources, and extreme weather events driven by climate change tend to concentrate microplastics and threaten aquatic organisms. The study highlights a critical gap in research that jointly addresses these interconnected factors and calls for integrated policy approaches.
Decision: Microplastic contamination in the Guandu River basin: The water supply reservoir of Rio de Janeiro metropolitan region (Southeastern Brazil) — R0/PR5
Researchers found microplastic concentrations of 6.1 particles/m³ in the cold-dry season and 2.3 particles/m³ in the warm-rainy season in the Guandu River basin, the primary water supply reservoir for the Rio de Janeiro metropolitan region. Polyethylene and polypropylene dominated among 11 identified polymer types, with higher microplastic abundance near more urbanized areas, indicating land use as a primary driver of contamination.