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Adsorption Behavior of Antibiotics by Microplastics Under Simulated Gastric Fluid Environment
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The Adsorption and Desorption Behavior of Bisphenol A on Five Microplastics Under Simulated Gastrointestinal Conditions
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Researchers found that microplastics can absorb the hormone-disrupting chemical bisphenol A (BPA) and then release it in simulated digestive fluids, suggesting that swallowing microplastics may deliver a dose of BPA into the human gut along with the plastic itself.
Adsorption of Tylosin and Tetracycline onto Microplastics: Behavior and Effects of Adsorbents and Salinity
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Batch adsorption experiments showed that polyethylene, polystyrene, and PVC microplastics can adsorb the antibiotics tylosin and tetracycline, with PVC showing the highest adsorption capacity and salinity enhancing tylosin uptake through a salting-out effect. This confirms that environmental microplastics act as mobile carriers for antibiotic pollutants, potentially spreading antimicrobial resistance to new ecosystems and amplifying the health risks of plastic pollution.
Effect of gastric fluid on adsorption and desorption of endocrine disrupting chemicals on microplastics
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Researchers found that simulated stomach fluid causes microplastics to release significantly more hormone-disrupting estrogen chemicals than saltwater alone, suggesting that microplastics ingested by marine animals or humans may deliver a higher internal dose of endocrine disruptors than previously estimated.
Sorption of Pharmaceuticals on Microplastics
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Researchers reviewed the sorption of pharmaceuticals onto microplastics in the environment, finding that microplastics act as vectors for pharmaceutical contaminants, potentially enhancing their transport and bioavailability in aquatic ecosystems and increasing combined toxicity risks.
The Sorption of Amoxicillin on Engineered Polyethylene Terephthalate Microplastics
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Aged PET microplastics derived from beach-collected bottles adsorbed significantly more amoxicillin antibiotic than unaged lab-produced microplastics due to increased surface area and hydrogen bonding interactions between the antibiotic and polymer ester groups. These findings confirm that weathered microplastics act as vectors for antibiotic transport in aquatic environments, potentially spreading pharmaceutical contamination far from its original source.
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