ArticleFrontiers in toxicology2026
Microplastics in freshwater environments across the high altitude region of Gilgit-Baltistan, Pakistan.
Article in Frontiers in toxicology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Microplastics are increasingly recognized as pervasive contaminants in remote mountain freshwater ecosystems, yet evidence from high-altitude regions remains limited. This study investigated microplastics occurrence and characteristics in surface water, sediments, and fish from the Braldu-Shigar-Skardu freshwater system in Gilgit-Baltistan, northern Pakistan. Samples were collected from remote headwaters, tributaries, main river channels, and the Satpara Lake-Dam system. Fish originated from wild populations, farming facilities, and local markets to provide a broader assessment of microplastic exposure. Matrix-specific extraction protocols were applied, followed by stereomicroscope sorting and polymer identification by µFT-IR spectroscopy. Microplastics were detected in nearly all sites and matrices, with concentrations ranging from 1 to 17 MPs L
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