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Sub-100 nm nanoplastics: potent carriers of tributyltin in marine water
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This study demonstrates that sub-100 nm nanoplastics adsorb significantly more tributyltin (TBT) — a highly toxic marine antifouling agent — than larger plastic particles, potentially remobilizing legacy TBT contamination from marine sediments. The finding is concerning because small nanoplastics may be carrying concentrated doses of persistent toxic chemicals to marine organisms, including species consumed by humans.
This study demonstrates that sub-100 nm nanoplastics have a significantly greater capacity for tributyltin adsorption, raising concerns that small nanoplastics may remobilise existing TBT pollution, rendering it more available to marine organisms.
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Toxicity of microplastic particles with and without adsorbed tributyltin (TBT) in Gammarus fossarum (Koch, 1835)
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Microplastic particles tested in freshwater crustaceans (Gammarus fossarum) were not directly toxic on their own, but when coated with the toxic chemical tributyltin (TBT), they significantly increased harm to the animals. This shows microplastics can act as vectors for chemical pollutants, amplifying their environmental danger.
Role of Microplastics in the Biomagnification of PBTs in Marine Organisms
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This paper reviews how microplastics may facilitate the biomagnification of persistent, bioaccumulative, and toxic (PBT) chemicals in marine food webs, given that plastic particles can adsorb and concentrate pollutants. The work highlights microplastics as a potential new vector for introducing toxic chemicals into marine organisms and up through the food chain.
Influence of a suite of environmentally relevant conditions on PBT leaching from, and sorption to, marine microplastic debris
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Researchers examined how environmental conditions such as UV exposure, weathering, and saltwater affect the ability of marine microplastics to absorb or release persistent, bioaccumulative, and toxic (PBT) chemicals, finding that the type of plastic and its weathering history significantly influence how much chemical contamination it carries into the marine food web.
Association of tetrabromobisphenol A (TBBPA) with micro/nano-plastics: A review of recent findings on ecotoxicological and health impacts
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This review examines how tetrabromobisphenol A (TBBPA), a widely used flame retardant found in plastic products, binds to micro and nanoplastics in the environment. When TBBPA hitches a ride on microplastics, the combined effect on organisms and ecosystems is often worse than either contaminant alone. Since TBBPA is an additive in many plastic products, the findings highlight how microplastics can carry harmful chemicals directly into the body.
Nanoplastics impact on marine biota: A review
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Researchers reviewed the emerging toxicological literature on nanoplastics in marine ecosystems, distinguishing primary nanoplastics (manufactured at nanoscale) from secondary nanoplastics (fragmented from larger debris), and summarizing how nanoscale size changes particle reactivity and bioavailability in ways that differ substantially from their macro- and microscale counterparts.
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