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Occurrence and Distribution of Microplastics in Hydrologically Connected River–Reservoir Systems: Tepeji–Requena and Tula–Endhó, Mexico
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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.
Microplastics (MPs) were investigated in two hydrologically connected river–reservoir systems in central Mexico: the Tepeji River–Requena Reservoir and the Tula River–Endhó Reservoir. Water samples were processed by filtration and oxidative digestion, followed by optic...
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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.
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Researchers determined microplastic presence and associated trace metal contamination in rivers, reservoirs, and lakes within a UNESCO biosphere reserve in Mexico -- one of the first studies of freshwater microplastics in a Mexican protected area. Microplastics and co-occurring trace metals were found throughout the reserve's freshwater systems, demonstrating that even protected natural areas are not shielded from plastic pollution.
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