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Contamination of marine sediments by microplastics and adsorbed organochlorine pollution (chlordecone) in coral reefs of Guadeloupe (Lesser Antilles)
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Scientists found tiny plastic bits (microplastics) in coral reef sediments near Guadeloupe, and these plastics can soak up chlordecone, a banned but long-lasting pesticide still polluting the area's soil and water. This matters because microplastics carrying toxic chemicals can move up the food chain, from small marine life to fish, potentially ending up on our plates and adding to our chemical exposure over time.
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More Papers Like This
Detection of Adsorbed Chlordecone on Microplastics in Marine Sediments in Guadeloupe: A Preliminary Study
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Researchers conducted a preliminary study detecting the organochlorine pesticide chlordecone adsorbed onto microplastics in marine sediments from Guadeloupe, where the pesticide was heavily used in banana cultivation from 1972 to 1993. The study found that microplastics in contaminated sediments can carry legacy pollutants, potentially increasing their bioavailability to marine organisms.
Determination of organochlorine pesticides adsorbed on plastic pellets
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Researchers analyzed organochlorine pesticides adsorbed onto plastic pellets found in coastal environments, contributing to understanding of how plastic debris accumulates and concentrates toxic chemicals. Plastic pellets, a type of microplastic, can act as carriers bringing persistent organic pollutants into marine food webs.
Characterization of microplastics in beach sediments and surface water at Corn Island, Nicaraguan Caribbean
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Researchers found tiny plastic bits (mostly broken-down fragments smaller than a grain of rice) piling up in the sand at busy tourist beaches on Corn Island, Nicaragua, especially in the higher, drier areas where waves don't reach as often. While these microplastics weren't found floating in the surrounding water, their buildup in sand matters because they can work their way into the food chain through fish and shellfish, and eventually onto our plates — a reminder that cutting back on single-use plastics at tourist destinations could help protect both beaches and the seafood we eat.
Polymer Composition Provides Insights into Source- and Transport-Related Microplastic Patterns in Caribbean Coral Reef Environments
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Scientists studying Caribbean coral reefs found tiny plastic particles (smaller than a grain of sand) in every reef they tested, mostly from common plastics like packaging, textiles, and food containers. Some reefs closer to human activity showed different plastic "fingerprints," including materials from paints and vinyl products, suggesting local pollution—but ocean currents also seem to spread plastics widely across the region, mixing signals together. This matters because these same plastics can enter the seafood we eat and the water we swim in, and understanding where they come from is a first step toward reducing our exposure.
Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis
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Researchers measured organochlorine pesticide concentrations in plastic pellets collected from beaches and analyzed how plastic type affects sorption of these persistent contaminants. The study shows that plastic pellets accumulate significant levels of legacy pesticides from seawater, acting as chemical sponges that can deliver concentrated toxic loads to marine organisms.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.