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20 resultsShowing papers similar to 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
ClearStormwater runoff microplastics: Polymer types, particle size, and factors controlling loading rates
Researchers characterized microplastics in stormwater runoff samples collected at urban outfall locations. The study identified 17 different polymer types across various storm events, with concentrations around 0.99 particles per liter for the 500-1000 micrometer size range, and found that rainfall intensity and land use were key factors controlling microplastic loading rates.
Microplastic pollution in sediments of urban rainwater drainage system
Researchers found microplastics in all sediment samples from a university campus rainwater drainage system, with abundances ranging from 80 to 2,610 particles/kg and the highest concentrations in student living areas, suggesting that land use patterns and management practices influence microplastic accumulation in urban stormwater infrastructure.
Characterizing microplastics in urban runoff: A multi-land use assessment with a focus on 1–125 μm size particles
Researchers collected stormwater runoff from three different urban land use types and found microplastics present across all sites, with significant variation in polymer types depending on the area. By using multiple detection techniques, they were able to identify particles as small as 1 micrometer, revealing that the smallest size fractions dominated the total count. The study emphasizes that urban runoff is a major pathway for microplastic pollution reaching waterways.
Contribution of different land use catchments on the microplastic pollution in detention basin sediments
Researchers measured microplastic pollution in detention basin sediments receiving runoff from catchments with different land uses — residential, commercial, and industrial — finding that industrial catchments contributed the highest microplastic loads. Particle morphology differed by land use type, with industrial sites associated with more fragments and commercial areas with more fibres.
Microplastic pollution in urban stormwater inlet sediments influenced by land use type of runoff drainage area
Researchers analyzed microplastic contamination in urban stormwater inlet sediments across different land use types in Ma'anshan City, China. They found microplastics present in all locations, with sediments near main roads showing the highest contamination at over 1,100 items per kilogram, roughly double that of other land use types. The study reveals that polypropylene was the dominant polymer across all areas, and that the characteristics of microplastic pollution vary systematically with surrounding land use patterns.
Land use-based characterization and source apportionment of microplastics in urban storm runoffs in a tropical region
Urban stormwater runoff in a tropical monsoon region contained 4.7 particles/L and 3.8 mg/L microplastics on average, with concentrations following land use order of industrial > transportation > commercial > residential, and approximately 85% of sources identifiable by morphology and polymer type.
Characterization of microplastics accumulated in sediments of stormwater detention basins, in relation to the land use patterns in the contributing catchment.
Microplastics in stormwater detention basin sediments were characterized and linked to surrounding land use, with roads and residential areas contributing the highest concentrations and most diverse plastic types.
Microplastic emission characteristics of stormwater runoff in an urban area: Intra-event variability and influencing factors
Researchers found that stormwater runoff from both industrial and residential urban catchments contained substantial microplastics (54–639 particles per liter), with polypropylene and polyethylene dominating, and that microplastic concentrations peaked early in rain events following longer dry periods.
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.
Meso- and microplastic composition, distribution patterns and drivers: A snapshot of plastic pollution on Brazilian beaches
A standardized survey of plastic pollution across 22 sandy beaches spanning over 4600 km of Brazilian coast found widespread contamination in coastal sediments, with polymer type, size, and distribution patterns reflecting diverse sources including fishing activity and urban runoff.
The artificialization in the sediment profiles of the streams in the Água Branca basin – Itirapina, São Paulo, Brazil
This Brazilian study examined urban stream sediments for signs of human impact, comparing samples collected in wet and dry seasons and across land use types. Urban river sediments are major sinks and transport pathways for microplastics, and physical sediment composition reflects overall levels of anthropogenic contamination.
Microplastics pollution in urban freshwater sediments: A descriptive assessment of land-use categories
A study of stormwater retention ponds across different urban land uses in an unspecified city found that microplastic concentrations in pond sediments varied by land type, with levels linked to the surrounding activities such as residential, educational, and mixed-use development. Using Nile red fluorescence staining for identification, the research maps how urban stormwater systems accumulate microplastics and highlights these ponds as overlooked pollution hotspots. Understanding which land uses drive the most contamination can help target urban plastic management interventions.
Distribution characteristics of microplastics in storm-drain inlet sediments affected by the types of urban functional areas, economic and demographic conditions in southern Beijing
This study analyzed microplastics in storm-drain inlet sediments across agricultural, commercial, and residential districts in Beijing, finding distinct distribution patterns linked to land use type. Storm-drain inlets were identified as a critical link in transporting microplastic pollutants from urban runoff into receiving waters.
Impact of land cover on microplastics accumulation in freshwater sediments
Researchers tracked microplastic accumulation in freshwater sediments across sites with different land cover types, examining temporal trends to understand how land use affects plastic discharge into waterways. Land cover type was a significant predictor of sediment microplastic concentration, with urbanized and agricultural catchments showing higher accumulation.
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.
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.
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.
Land Use Pattern Affects Microplastic Concentrations in Stormwater Drains in Urban Catchments in Perth, Western Australia
Researchers measured microplastic concentrations in stormwater drains across six Perth and Peel catchments with contrasting land uses, finding mean concentrations of 14.2 microplastics per liter with fibrous forms dominant, and demonstrating that catchment land use pattern significantly influences microplastic loading to stormwater systems that transport particles from terrestrial to coastal environments.
The urban microplastic footprint: investigating the distribution and transport
Researchers investigated the distribution and transport of microplastics within an urban environment, mapping the 'urban microplastic footprint' to understand how city infrastructure and land use patterns drive the spatial distribution and downstream export of plastic particles to receiving water bodies.
Microplastic pollution in sophisticated urban river systems: Combined influence of land-use types and physicochemical characteristics
This study assessed microplastic pollution across an urban river network in China, finding that land-use type and water physicochemical properties jointly influence microplastic distribution, with industrial and residential areas contributing highest loads.