Physicochemical and Biological Changes on Naturally Aged Microplastic Surfaces in Real Environments Over 10 Months

Combined abiotic and biotic weathering of microplastic particles: Alterations of their physicochemical properties and interactions with cells

Replicating real-world microplastics with accelerated physicochemical ageing

AI summary · Read the abstract

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.

Impacts of Biofilm Formation on the Physicochemical Properties and Toxicity of Microplastics: A Concise Review

AI summary · Read the abstract

Researchers reviewing biofilm formation on microplastics found that microbial colonization alters the particles' surface chemistry, density, and pollutant adsorption capacity, ultimately affecting how microplastics are ingested by organisms and how they influence nutrient cycling in aquatic ecosystems.

Microplastics’ Aging Processes in the Aquatic Environment: Aging Mechanisms, Altered Environmental Behaviors and Ecotoxicity

AI summary · Read the abstract

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.

Microplastic Fate and Impacts in the Environment

AI summary · Read the abstract

Microplastic pollution has been documented across virtually every ecosystem on Earth, from sea surfaces to deep sediments, polar regions to tropical rivers, and inside a wide range of organisms spanning multiple trophic levels. This comprehensive environmental presence confirms that microplastics pose systemic risks to biodiversity and human health through multiple exposure pathways.