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Estudio de microplásticos en muestras de agua y sedimentos de un río urbano del suroccidente de Colombia
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A study of a Colombian urban river found microplastics in all water and sediment samples, with concentrations reaching 4,186 particles per liter in water and 62,763 per kilogram in sediments, and human activity along the riverbank directly correlated with contamination levels. This adds to evidence that urban rivers act as major conduits channeling microplastics from cities into the ocean.
Objetivo: Caracterizar los microplasticos en sedimentos y muestras de agua del río Molino en la zona urbana del municipio de Popayán, Cauca. Metodología: Se realizó la recolección de muestras de sedimentos y columna de agua en tres estaciones en la ribera del río Molino en su paso por el perímetro urbano del municipio de Popayán, transportándolas hacia análisis en laboratorio logrando extraer microplasticos por la implementación de actividades de filtración y separación por densidad, finalizando con inspección y conteo por microscopia. Resultados: Se determinaron partículas plásticas en todas las muestras, logrando estipular su clasificación morfológica y su cantidad en unidades de MP/L y MP/Kg para agua y sedimentos respectivamente. Conclusiones: Se identificaron un total de 4186 MP/L y 62763 MP/Kg. La influencia antrópica actuó como un principal determinante en la concentración de estos polímeros y de sus respectivos porcentajes morfológicos, además en su clasificación, siendo esta mayoritariamente secundaria.
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Estudio de microplásticos en muestras de agua y sedimentos de un río urbano del suroccidente de Colombia
AI summary Read the abstract
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
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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
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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.
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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)
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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.
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