We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Microplastics in freshwater sediments of Atoyac River basin, Puebla City, Mexico
AI summary Read the abstract
Microplastics were found throughout the sediments of the Atoyac River basin in central Mexico, with fibers and fragments as the dominant shapes and higher concentrations near urban areas. The study provides baseline data on freshwater microplastic contamination in a rapidly urbanizing region of Latin America.
Microplastics (MPs) are contaminants of emerging concern in aquatic environments. The abundance, distribution and characteristics (color, morphology, texture) of MPs from Atoyac River basin, a highly urbanized river system located in Central Mexico were investigated in this study. The sediment samples were collected from 29 different sites along the Atoyac River basin in four different zones: Zahuapan River, Atoyac River, Confluence zone and Valsequillo dam and processed for MPs extraction using ZnCl density separation method. The total number of MPs in Zahuapan River, Atoyac River, Confluence zone and Valsequillo dam was 1633.34 ± 202.56, 1133.33 ± 72.76, 833.33 ± 80.79 and 900 ± 346.12 items kg respectively. It was found that the concentration of MPs is higher in the downstream section of the river (confluence zone: 833.33 ± 80.79 & Valsequillo dam: 900 ± 346.12 items kg), revealing significant impacts of dense population and industrial complex of Puebla City. Colored MPs were predominant accounting for 51% and white MPs for 49% of the total MPs. Films (25.9%) and fragments (22.2%) were the most abundant type followed by fibers (14.8%). Scanning electron microscope images revealed varying disintegration features and energy-dispersive X-ray spectra demonstrated the presence of different metal elements on the surface of MPs. The results highlighted the widespread distribution of MPs in the sediments of Atoyac River basin, Mexico.
More Papers Like This
Spatiotemporal assessment of microplastic incidence in the Atoyac basin — a key watershed in Mexico
AI summary Read the abstract
This spatiotemporal study quantified and characterized microplastics in freshwater and sediments across the Atoyac sub-basin in Mexico, documenting MP types, shapes, and sizes at sites impacted by urban, agricultural, and industrial activity over multiple sampling periods.
Microplastics in water and bed sediments from the Baluarte River Basin: Occurrence, behavior and composition
AI summary Read the abstract
This study characterized microplastics in water and bed sediments from the Baluarte River basin in Mexico, documenting occurrence, spatial distribution, and dominant polymer types, and identifying urban wastewater and agricultural runoff as key sources.
Initial investigation of microplastic pollution in river sediments at Yogyakarta City Indonesia
AI summary Read the abstract
Researchers conducted an initial investigation of microplastic pollution in river sediments crossing Yogyakarta City in Indonesia, finding microplastics at all sampling sites. Fragment and fiber types dominated, reflecting common plastic pollution sources in this urban environment.
Occurrence and Distribution of Microplastics in Hydrologically Connected River–Reservoir Systems: Tepeji–Requena and Tula–Endhó, Mexico
AI summary Read the abstract
Researchers tested water from two connected river and reservoir systems in central Mexico, the Tepeji River-Requena Reservoir and the Tula River-Endhó Reservoir, for microplastics. Samples were filtered and treated chemically, then examined under a microscope to detect and count the plastic particles present.
Benthic macroinvertebrates and microplastic contamination in contrasting water quality environments of the Middle Tietê River basin (São Paulo, Brazil)
AI summary Read the abstract
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.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.