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A carbon-14 radiotracer-based study on the phototransformation of polystyrene nanoplastics in water versus in air
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Researchers used carbon-14 radiotracers to study the phototransformation of polystyrene nanoplastics in water versus air, finding that aqueous conditions promoted both mineralisation and photo-oxidation with significant leaching of carbon from the particles. The results demonstrate that the environmental matrix strongly influences the fate and breakdown rate of nanoplastics.
A carbon-14 radiotracer-based study revealed that water promoted mineralization and photo-oxidation of polystyrene nanoplastics with significant amounts of carbon leached out.
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Fate of polystyrene and polyethylene nanoplastics exposed to UV in water
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Researchers found that UV irradiation progressively degrades polystyrene and polyethylene nanoplastics dispersed in water, causing them to become porous, fragment, and ultimately degrade completely, revealing the photochemical fate of nanoplastics in sunlit aquatic environments.
Fate of polystyrene and polyethylene nanoplastics exposed to UV in water
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Researchers studied how UV light degrades polystyrene and polyethylene nanoplastic particles dispersed in water, finding that UV irradiation caused complete degradation of both types under laboratory conditions, with polystyrene degrading much faster than polyethylene. Understanding how nanoplastics degrade under sunlight in natural water is important for modeling their fate in the environment.
Effects of photochlorination on the physicochemical transformation of polystyrene nanoplastics: Mechanism and environmental fate
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Researchers studied how sunlight combined with chlorine in water treatment changes the properties of polystyrene nanoplastics. They found that solar irradiation significantly accelerated the chemical breakdown of the nanoplastics, including surface oxidation and the release of organic compounds. The study reveals that nanoplastics leaving wastewater treatment plants undergo rapid transformation in the environment, which could alter both their fate and toxicity.
Degradation of nanoplastics in the environment: Reactivity and impact on atmospheric and surface waters
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Researchers used polystyrene nanoparticles as a proxy to study nanoplastic degradation pathways in the environment, examining their reactivity and potential impact on both atmospheric chemistry and surface water quality. The study found that nanoplastics undergo transformation processes that may affect atmospheric aerosol composition and aquatic ecosystems.
Swelling-Induced Fragmentation and Polymer Leakage of Nanoplastics in Seawater
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Researchers tracked polystyrene nanoplastics in seawater over 29 days under simulated sunlight and found that light accelerates aggregation, while also inducing swelling and fragmentation of particles and leaching of polymer components, complicating predictions of nanoplastic fate and risk in marine environments.
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