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Reactive oxygen species-induced microplastics aging: Implications for environmental fate and ecological impact
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This review details how physical, chemical, and biological aging processes transform microplastics in aquatic environments, altering their surface properties, pollutant adsorption capacity, and ability to leach plasticizers and flame retardants. Aged microplastics pose compounded risks to aquatic organisms and human health by acting as more potent carriers of toxic chemicals and penetrating biological tissues more readily than pristine particles.
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Researchers developed methods to artificially age microplastics in the lab so they accurately replicate the physicochemical properties of microplastics found in real-world environments. Environmentally realistic aged microplastics are essential for generating reliable toxicology data, since fresh plastic particles behave differently than weathered ones that organisms actually encounter.
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