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20 resultsShowing papers similar to Microplastics Meet Metoprolol in Natural Water: Sorption Behavior and Mechanism
ClearSorption and desorption of selected pharmaceuticals by polyethylene microplastics
Researchers tested the sorption and desorption of three pharmaceuticals — sulfamethoxazole, propranolol, and sertraline — onto polyethylene microplastics in water, finding that all three compounds sorbed to the plastic surface and were only partially released over time. The results suggest microplastics can act as vectors for pharmaceutical compounds in aquatic environments, potentially affecting their bioavailability.
Interaction between Microplastics and Pharmaceuticals Depending on the Composition of Aquatic Environment
This review examines how aquatic environmental conditions — including dissolved organic matter, salinity, pH, and temperature — influence the adsorption and desorption of pharmaceuticals onto microplastic surfaces, showing that water composition significantly affects the extent to which microplastics act as vectors for drug contaminants.
Sorption of selected pharmaceutical compounds on polyethylene microplastics: Roles of pH, aging, and competitive sorption
Researchers found that polyethylene microplastics adsorb pharmaceutical compounds including an antibiotic, a beta-blocker, and an antidepressant, with sorption capacity influenced by pH, aging of the plastic, and competition between compounds — raising concern about microplastics as carriers of pharmaceuticals in aquatic environments.
Adsorption of a diverse range of pharmaceuticals to polyethylene microplastics in wastewater and their desorption in environmental matrices
Researchers investigated how polyethylene microplastics adsorb pharmaceuticals in municipal wastewater and release them in environmental and biological fluids. They found that drug adsorption depended heavily on the compound's charge and hydrophobicity, with cationic and hydrophobic drugs adsorbing most readily. The study suggests that microplastics could act as vectors for certain pharmaceuticals, potentially transporting them through waterways and into organisms.
Polyamide microplastics in wastewater as vectors of cationic pharmaceutical drugs
Researchers investigated whether polyamide microplastics in wastewater can adsorb pharmaceutical drugs and transport them into the environment. They found significant adsorption of hydrophobic pharmaceuticals like propranolol, amitriptyline, and fluoxetine, with limited desorption in river water but increased release in simulated gastric fluids. The findings suggest that microplastics discharged from wastewater treatment could carry adsorbed medications over long distances and release them if ingested by wildlife or humans.
Sorption of pharmaceuticals on the surface of microplastics
Researchers tested the ability of four common microplastic types to adsorb nine pharmaceutical compounds frequently found as water pollutants. They found that sorption involved both hydrophobic and electrostatic interactions, but under natural environmental conditions the binding was relatively weak. The study suggests that while microplastics can interact with pharmaceutical residues, their role as carriers of these contaminants in real aquatic environments may be more limited than previously assumed.
Sorption of two common antihypertensive drugs onto polystyrene microplastics in water matrices
Researchers examined the sorption of two common antihypertensive drugs onto polystyrene microplastics in water, finding that microplastics can adsorb pharmaceutical compounds and may serve as vectors for drug transport in aquatic environments.
The Sorption of Antidepressant Pharmaceuticals on Virgin and Aged Microplastics Is Lower than Bioconcentration in Protozoa
Researchers assessed the sorption of antidepressant pharmaceuticals — sertraline, fluoxetine, and duloxetine — onto virgin and UV-aged polystyrene, polyethylene terephthalate, and polyvinyl chloride microplastics, comparing these results to sorption onto biochar. The study found that microplastic sorption of these polar drugs was consistently lower than biochar sorption, suggesting that while microplastics can act as vectors for antidepressant transport in aquatic environments, their relative contribution may be smaller than previously assumed.
Adsorption behavior of levofloxacin hydrochloride on non‐degradable microplastics aging with H 2 O 2
This study explored how microplastics act as carriers for the antibiotic levofloxacin in water, finding that chemically aged plastics (simulating environmental weathering) adsorb significantly more of the drug than fresh plastics. All three plastics tested — PVC, polystyrene, and PET — showed increased drug-binding capacity after aging, primarily through pore-filling. This matters because microplastics in rivers and lakes don't just pose a physical hazard; they can pick up and concentrate pharmaceutical contaminants, potentially delivering them to aquatic organisms at higher doses.
Mini Review on Recent Advances of the Adsorption Mechanism Between Microplastics and Emerging Contaminants for Conservation of Water
This mini-review examines the adsorption mechanisms between microplastics and emerging contaminants such as pharmaceuticals, highlighting how physicochemical properties like hydrophobicity and pH influence pollutant uptake onto different polymer types. The review synthesizes recent advances relevant to understanding how microplastics act as vectors for pharmaceutical contaminants in aquatic environments.
Interactions of emerging contaminants with model colloidal microplastics, C60 fullerene, and natural organic matter – effect of surface functional group and adsorbate properties
Researchers studied how two common pharmaceutical contaminants — amlodipine and carbamazepine — adsorb onto colloidal microplastics, natural organic matter, and fullerene nanoparticles. The drug amlodipine accumulated at much higher levels than carbamazepine, and the type of surface coating on the plastic significantly influenced how much drug was absorbed, with implications for how microplastics carry pharmaceuticals through water systems.
Microplastic–Pharmaceuticals Interaction in Water Systems
This review examined the interactions between microplastics and pharmaceutical compounds in aquatic environments, exploring how microplastics act as vectors that concentrate, transport, and potentially enhance the bioavailability and toxicity of drug residues in water.
Chiral pharmaceutical drug adsorption to natural and synthetic particulates in water and their desorption in simulated gastric fluid
Researchers investigated how microplastics and bioplastics in water adsorb the chiral pharmaceutical drugs fluoxetine and propranolol, finding that while fluoxetine adsorbed to all particle types, no enantioselectivity was observed, and that adsorption was significantly greater in real environmental water matrices than in laboratory buffer solutions.
Adsorption behavior and interaction mechanism of microplastics with typical hydrophilic pharmaceuticals and personal care products
This study examined how different types of microplastics adsorb hydrophilic pharmaceuticals and personal care products (PPCPs) in aquatic environments, finding that polymer type and surface properties governed the interaction mechanisms. The results indicate that microplastics can act as vectors for these emerging contaminants.
Microplastics as vectors of pharmaceuticals in aquatic organisms – An overview of their environmental implications
Researchers reviewed how microplastics act as "vectors" for pharmaceutical contaminants in aquatic environments, absorbing drugs onto their surfaces and then releasing them inside organisms after ingestion — potentially amplifying the toxicity of pharmaceuticals throughout the food web.
Interactions between microplastics, pharmaceuticals and personal care products: Implications for vector transport
This review examines how microplastics can absorb pharmaceuticals and personal care products (like medications, sunscreen, and antibacterials) onto their surfaces in the environment. Environmental factors like water acidity, salt levels, and organic matter all affect how strongly these chemicals bind to plastic surfaces. When organisms ingest microplastics carrying these absorbed chemicals, the combined exposure could pose greater health risks than either the plastics or chemicals alone.
Influence of Aging and the Presence of Dissolved Organic Matter on Caffeine Adsorption onto Microplastics in Aquatic Environments
Researchers studied how aged polyethylene microplastics adsorb caffeine in water containing dissolved organic matter. They found that aged microplastics adsorbed significantly more caffeine than pristine ones, and that higher concentrations of humic acid enhanced adsorption further. The study suggests that as microplastics weather in the environment, they become more effective carriers of pharmaceutical contaminants, particularly in organic matter-rich waters.
Assessing the sorption of pharmaceuticals to microplastics through in-situ experiments in New York City waterways
Researchers deployed eight types of plastic and glass test materials in New York City waterways for 28 days to measure in-situ pharmaceutical adsorption (atenolol, sulfamethoxazole, ibuprofen), finding that surface area was the primary determinant of adsorption regardless of polymer type. Rapid biofouling and biofilm formation on all samples appeared to be the dominant factor controlling sorption capacity, with high-surface-area straw and bag fragments showing the highest mass-based adsorption coefficients.
Sorption of Pharmaceuticals on Microplastics
This review examines the sorption of pharmaceuticals onto microplastics in aquatic environments, analyzing how polymer type, particle size, surface area, polarity, and pharmaceutical properties such as log Kow and pKa influence sorption behavior, and how weathering and aging processes increase sorption capacity by altering microplastic surface chemistry and topography.
Aging microplastics enhances the adsorption of pharmaceuticals in freshwater
Researchers found that aging microplastics through photo-oxidation significantly increases their ability to adsorb pharmaceutical compounds from freshwater compared to virgin particles. Among the drugs tested, fluoxetine showed the highest adsorption, binding to all aged microplastic types at rates up to 99%. The study highlights that environmentally weathered microplastics may act as more effective carriers of pharmaceutical pollutants in freshwater ecosystems than previously assumed.