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Surface Physicochemical Properties and Dibutyl Phthalate Adsorption of Microplastics Naturally Aged in Seawater
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Tiny plastic bits (microplastics) don't just sit unchanged in the environment, sunlight, weather, and other natural forces break them down over time, and this "aging" process actually makes them better at soaking up toxic substances like heavy metals. This review pulls together existing research to show that aged microplastics may pose a bigger contamination risk than fresh ones, which matters because these particles can end up in our water, food, and eventually our bodies. Understanding how this works helps scientists better predict the real-world risks microplastics pose to human health.
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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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