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20 resultsShowing papers similar to Sorption of diclofenac by polystyrene microplastics: Kinetics, isotherms and particle size effects
ClearAdsorption Behavior of Diclofenac on Polystyrene and Poly(butylene adipate-co-terephthalate) Microplastics: Influencing Factors and Adsorption Mechanism
Researchers investigated the adsorption of the anti-inflammatory drug diclofenac onto polystyrene and poly(butylene adipate-co-terephthalate) (PBAT) microplastics, finding that PS adsorbed more diclofenac than PBAT due to differences in surface chemistry and hydrophobicity. Understanding how pharmaceuticals bind to different plastic types is essential for assessing their combined environmental risks in aquatic systems.
Sorption of three common nonsteroidal anti-inflammatory drugs (NSAIDs) to microplastics
This study investigated the adsorption of three common nonsteroidal anti-inflammatory drugs (NSAIDs) onto microplastics, finding that polymer type, drug properties, and environmental conditions all influenced sorption capacity. The results suggest microplastics can act as vectors for pharmaceutical contaminants in aquatic environments.
Adsorption of Diclofenac Sodium by Aged Degradable and Non-Degradable Microplastics: Environmental Effects, Adsorption Mechanisms
Researchers found that UV aging of both polystyrene and biodegradable PBAT microplastics increased their surface oxidation and hydrophilicity, enhancing their capacity to adsorb the pharmaceutical pollutant diclofenac sodium through surface interaction and pore-filling mechanisms.
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.
Microplastics Alter the Distribution and Toxic Potentialof Typical Pharmaceuticals in Aqueous Solutions: Mechanisms and TheoryCalculations
Researchers studied how polystyrene microplastics interact with pharmaceuticals carrying different functional groups (naproxen, bezafibrate, norfloxacin, ibuprofen) using sorption experiments and density functional theory calculations. Sorption capacity varied by pharmaceutical type (highest for naproxen), with hydrophobic partitioning and π-π interactions as key mechanisms, altering the aquatic risk profile of each drug.
Effect of Aging on Physicochemical Properties and Size Distribution of PET Microplastic: Influence on Adsorption of Diclofenac and Toxicity Assessment
Researchers studied how environmental aging changes the physical and chemical properties of PET microplastics and their ability to absorb pharmaceutical pollutants. They found that aged microplastics had rougher surfaces and greater capacity to adsorb diclofenac, a common pain medication found in waterways. The study suggests that weathered microplastics may act as more effective carriers of pharmaceutical contaminants in the environment compared to fresh plastics.
Microplastics Alter the Distribution and Toxic Potential of Typical Pharmaceuticals in Aqueous Solutions: Mechanisms and Theory Calculations
Researchers studied how polystyrene microplastics interact with common pharmaceutical drugs in water and found that the plastics can absorb these medications, altering their distribution and potentially increasing environmental toxicity. The strength of absorption varied depending on the chemical properties of each drug, with some binding much more readily to microplastics than others. The findings highlight that microplastics may act as carriers for pharmaceutical pollutants, complicating efforts to assess water contamination risks.
Effects of particle size and solution chemistry on Triclosan sorption on polystyrene microplastic
Researchers characterized how the antimicrobial compound triclosan adsorbs onto polystyrene microplastics, finding that sorption is driven primarily by hydrophobic interactions and is highest at acidic pH, while temperature, ionic strength, and co-occurring heavy metals had little effect — suggesting polystyrene acts as an environmental carrier for triclosan.
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.
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.
Comparative study on the adsorption and desorption behaviors of quinolone pollutants on polystyrene microplastics of different particle sizes
Researchers compared how polystyrene microplastics of different particle sizes adsorb and release the antibiotic pollutants ciprofloxacin and gatifloxacin. The study found that smaller microplastics had higher adsorption capacity due to greater surface area and charge, and that pollutants were harder to release from smaller particles, suggesting that fine microplastics may more effectively transport antibiotic contaminants through aquatic environments.
Adsorption characteristics of ciprofloxacin hydrochloride on polystyrene microplastics in freshwater
Researchers studied how polystyrene microplastics adsorb the antibiotic ciprofloxacin in freshwater, comparing pristine and aged particles. They found that aging treatment, particularly Fenton oxidation over seven days, significantly enhanced the adsorption capacity of the microplastics for the antibiotic. The study suggests that as microplastics weather in the environment, they may become increasingly effective carriers of pharmaceutical contaminants in water systems.
Adsorption of micropollutants onto realistic microplastics: Role of microplastic nature, size, age, and NOM fouling
Researchers measured adsorption of diclofenac and metronidazole onto four realistic microplastic types under varying size, aging, and natural organic matter conditions, finding that aged MPs with smaller size and without NOM fouling showed the highest pollutant adsorption capacity.
Effects of nanoplastics and microplastics on the availability of pharmaceuticals and personal care products in aqueous environment
Researchers found that nanoplastics and microplastics can sorb pharmaceuticals and personal care products in water, with smaller nanoplastics showing 1-2 orders of magnitude stronger sorption than microplastics, potentially reducing the bioavailability of these contaminants in aquatic environments.
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 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.
Size-dependent effect of microplastics on toxicity and fate of diclofenac in two algae
This study investigated how different sizes of polystyrene microplastics affect two species of algae and interact with the common pharmaceutical pollutant diclofenac. Researchers found that the smallest microplastics caused the most significant growth inhibition in algae, and the combined presence of microplastics and diclofenac could alter how each pollutant behaves. The findings underscore how microplastics can change the toxicity and environmental fate of other water contaminants.
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.
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.
Adsorption of antibiotics on microplastics
This study examined the adsorption of antibiotics onto different microplastic types, finding that sorption capacity depended on both the antibiotic's chemical properties and the plastic's surface characteristics, with implications for antibiotic transport in aquatic environments.