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Adsorption of heavy metals on microplastics in marine environments

Elsevier eBooks 2024 1 citation

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Heavy metal sorption in marine microplastic over time

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Ecological Effects of Chemical Contaminants Adsorbed to Microplastics

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Microplastics act as vectors for adsorbed chemical contaminants including pesticides, heavy metals, and persistent organic pollutants, amplifying their transport and bioavailability in aquatic and soil ecosystems. The combined exposure to plastic particles and their chemical cargo poses greater ecotoxicological risks than either contaminant class alone.

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Sorption of Potentially Toxic Elements to Microplastics

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Researchers reviewed how microplastics can adsorb toxic heavy metals from their surrounding environment, effectively acting as vehicles that concentrate and transport harmful elements. This sorption behavior increases the potential risk microplastics pose to organisms that ingest them, including humans.

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Ecological Effects of Chemical Contaminants Adsorbed to Microplastics

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Researchers reviewed how chemical contaminants that bind to microplastics — including pesticides and heavy metals — affect aquatic and soil organisms, finding that microplastics can both concentrate toxins and amplify their biological impact. This so-called Trojan horse effect may make microplastic pollution more ecologically harmful than the plastic alone would suggest.

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Sorption of Potentially Toxic Elements to Microplastics

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Microplastics readily sorb potentially toxic elements including heavy metals and metalloids from surrounding water, acting as concentrated carriers of these hazardous substances through aquatic food webs. This sorption capacity amplifies the toxicological risk of microplastic ingestion for organisms, including humans who consume contaminated seafood.

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