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61,005 resultsShowing papers similar to Estudio de microplásticos en muestras de agua y sedimentos de un río urbano del suroccidente de Colombia
ClearEstudio de microplásticos en muestras de agua y sedimentos de un río urbano del suroccidente de Colombia
Microplastics were detected in both water and sediment samples from the Molino River flowing through Popayán, Colombia, with fibers and fragments being the most common forms found in this urban waterway.
Characteristics, Contamination Levels, and Ecosystem Risk Assessment of Microplastics in Surface Water of a Highly Urbanized River from a Developing Country
Researchers characterized microplastic contamination in an urban river near a megacity in a developing country, finding concentrations of 350 to 660 particles per cubic meter of water. Polyethylene and polypropylene from household and municipal waste were the most common types, and a risk assessment found concerning contamination levels at several sampling sites. The study highlights how rivers in developing nations can serve as major pathways for microplastics to reach the ocean and enter the food chain.
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 concentration, distribution and dynamics along one of the largest Mediterranean-climate rivers: A whole watershed approach.
Researchers conducted a comprehensive survey of microplastic pollution across the entire Biobio river watershed in Chile, one of the largest rivers in South America. They found microplastics at all 18 sampling sites, with concentrations linked to urbanization, wastewater discharge, and agricultural activities. The study reveals that both environmental and human factors drive microplastic distribution patterns throughout large river systems.
Microplastic abundance and composition along an anthropogenic pressure gradient in an Andean river (Colombia)
Researchers surveyed microplastic abundance across an altitudinal gradient in a Colombian Andean river, finding highest concentrations in downstream urban and agricultural zones, with fibers and polypropylene dominating across water, sediment, and fish samples—the first report of microplastics in freshwater fish from the Tolima region.
Abundance, Distribution, and Drivers of Microplastic Contamination in Urban River Environments
Researchers surveyed microplastic contamination in sediments from the River Tame and its tributaries flowing through Birmingham, UK, finding microplastics in every sample at an average of 165 particles per 100 grams. The study identified urban density, wastewater treatment plant proximity, and river hydrodynamics as key drivers of microplastic accumulation hotspots in urban rivers.
Microplastics in tropical Andean rivers: A perspective from a highly populated Ecuadorian basin without wastewater treatment
Researchers measured microplastic concentrations in a highly populated Ecuadorian river basin that lacks wastewater treatment, finding contamination throughout the system and demonstrating that rivers in low-income tropical countries with poor infrastructure are major conduits for microplastics.
Identifikasi Karakteristik dan Kelimpahan Mikroplastik Pada Sampel Air Kali Surabaya
This Indonesian study characterized microplastic abundance and types in water samples from the Kali Surabaya river in Surabaya. The urban waterway showed widespread plastic contamination, with sources linked to densely populated residential areas along the riverbanks.
Cuantificación de la presencia de microplásticos en la cuenca alta del río Guayllabamba
This study quantified microplastics in the upper basin of the Guayllabamba River in Ecuador, finding contamination at multiple sites. The results add to evidence that South American rivers far from major industrial centers are already contaminated with microplastics, which eventually flow toward coastal and marine environments.
Spatial distribution of microplastic pollution and its relation to pollution index-based water quality status in Progo River, Indonesia
Researchers mapped microplastic distribution along Indonesia's heavily polluted Progo River, finding 75 to 436 plastic particles per cubic meter of water and showing that lower oxygen levels, higher organic pollution, and faster water flow all correlated with higher microplastic concentrations — evidence that plastic particles actively degrade river water quality.
[Composition and Distribution of Microplastics in the Water and Sediments of Urban Rivers in Beijing].
Researchers measured microplastic concentrations in water and sediments from eight sampling points along urban rivers in Beijing. Microplastics were widespread, with fibers being the most common type, likely from laundry and textile sources. Urban rivers are important conduits that transport microplastics from cities into larger water bodies and ultimately the ocean.
Urban drainage channels as a pathway for microplastics in riverine systems: A case study of Delhi, India
Researchers measured microplastics in Delhi's Najafgarh drain, secondary drains, and the Yamuna River, finding concentrations of 100-6,700 particles per cubic meter in secondary drains with clear seasonal variation. Urban drainage channels were identified as a major pathway for microplastics from terrestrial sources into the Yamuna River system.
Microplastic pollution in sediments in the urban section of the Qara Su River, Iran
Researchers sampled 15 sites along the Qara Su River in Iran and found microplastics in all sediment samples, with fibers making up 53% of particles and 92% of pieces smaller than 5 millimeters — the first microplastic survey of this river and a sign that urban wastewater treatment is not removing these pollutants effectively.
Occurrence of microplastic pollution in rivers globally: Driving factors of distribution and ecological risk assessment
Researchers constructed a global dataset of microplastic pollution across 862 river water and 445 sediment samples, identifying population density, GDP, and plastic waste generation as key driving factors of riverine microplastic distribution and ecological risk.
Microplásticos en sedimentos fluviales en la cuenca baja del río Rímac, Perú
Microplastics were detected in river sediments from the lower Rímac River basin in Peru, with concentrations linked to upstream urban and industrial plastic waste that enters the river system without adequate treatment.
Lead levels and abundance of microplastics in surface water and sediment along a rural–urban river gradient
Researchers sampled water and sediment along a rural-to-urban river and found microplastics at every location, with concentrations decreasing downstream in surface water but not following a clear pattern in sediment. They also found that higher microplastic levels in sediment were linked to higher lead concentrations, suggesting the two pollutants tend to accumulate together.
Evaluación De La Presencia De Microplásticos En Playas Del Río Del La Plata: Ciudad De Buenos Aires Y Alrededores
Microplastics were found in beach sediments along the Río de la Plata near Buenos Aires in both winter and spring surveys, confirming urban plastic pollution has reached coastal environments close to one of South America's largest cities.
Quantification and composition analysis of plastic pollution in riverine beaches of the lower Paraná River, Argentina
Researchers found macro-, meso-, and microplastics along riverbanks near Rosario city on the lower Paraná River in Argentina, with single-use items being dominant. The study highlights that South American freshwater rivers are important conduits for plastic pollution entering the ocean.
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.
Quantifying fluxes of microplastics from the magdalena river into the caribbean sea
This study quantified how many microplastics the Magdalena River — Colombia's largest river — carries into the Caribbean Sea, establishing a baseline for understanding South America's contribution to marine plastic pollution. River-to-ocean flux measurements like this are essential for building accurate global models of how plastic pollution accumulates in marine ecosystems.
Abundance, distribution, and characteristics of microplastics in coastal surface waters of the Colombian Caribbean and Pacific
This study documented microplastic abundance, distribution, and characteristics across Colombian Caribbean and Pacific coastal surface waters during the 2017 rainy season, finding concentrations up to 8.96 items per square meter and establishing the first national baseline for microplastic pollution in Colombian coastal waters.
Anthropogenic Litter in Urban Freshwater Ecosystems: Distribution and Microbial Interactions
Researchers quantified anthropogenic litter in urban rivers and streams and found that microplastics dominated by mass and particle count compared to macroplastic items. The study highlights urban freshwater systems as major conduits for plastic pollution moving toward marine environments and documents distinct microbial communities on plastic surfaces.
The effects of riverside cities on microplastics in river water: A case study on the Southern Jiangsu Canal, China
Researchers studied microplastic contamination in the Southern Jiangsu Canal in China and found that riverside cities significantly increase microplastic levels in river water, with abundance rising by 26% to 211% after flowing through urban areas. The study found that microplastic concentrations correlated with regional GDP and population density, with PET, polycarbonate, and polyethylene being the most common polymer types detected.
Microplastic is an Abundant and Distinct Microbial Habitat in an Urban River
Researchers demonstrated that microplastic surfaces in an urban river host a microbial community that is distinct from surrounding water and sediment communities, establishing microplastic as an abundant and ecologically distinct habitat for river microorganisms.