The contribution of additives to microplastic aquatic toxicity

Effect of aging on the release of additives and the toxicity of microplastics

AI summary

Researchers found that environmental aging of PVC microplastics increases their toxicity to intestinal cells, with aged particles causing greater oxidative stress, reduced tight junction integrity, and elevated paracellular permeability compared to non-aged particles. Aging also depleted plasticizer additives like DEHP while generating the toxic metabolite MEHP, indicating that weathered microplastics pose greater gut health risks than fresh ones.

Environmental effects of micro plastics in the aquatic environment

The environmental effects of microplastics on aquatic ecosystems

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Researchers reviewed the growing body of evidence on how microplastics harm aquatic ecosystems, finding that long-term exposure damages organisms at multiple levels — from delivering toxic chemicals to disrupting reproduction — and calling for urgent action to reduce plastic leakage into waterways.

Toxicity and Possibility of Microplastic Exposure While Living

Pollutants Bioavailability and Toxicological Risk from Microplastics

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Microplastics function as vectors for toxic chemicals — including persistent organic pollutants and heavy metals — adsorbing and concentrating these compounds before being ingested by organisms, which elevates bioavailability and toxicological risk beyond the particles themselves. This chemical hitchhiker effect means microplastic ingestion exposes organisms, including humans, to a broader and more potent cocktail of contaminants than particle size alone would suggest.