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20 resultsShowing papers similar to Adsorption behavior and quantum chemical analysis of surface functionalized polystyrene nano-plastics on gatifloxacin.
ClearInsights into the interaction mechanism of ofloxacin and functionalized nano-polystyrene.
This study investigated how the antibiotic ofloxacin interacts with functionalized polystyrene nanoplastics, finding that surface charge and functional groups on the nanoplastics strongly influenced binding strength and mechanisms. The results improve understanding of how nanoplastics can act as carriers for antibiotics in the environment, potentially altering their fate and biological effects.
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.
Tetracycline adsorption trajectories on aged polystyrene in a simulated aquatic environment: A mechanistic investigation
Researchers found that aging of polystyrene microplastics in simulated aquatic environments progressively altered their surface properties and enhanced tetracycline antibiotic adsorption over time, with pseudo-second-order kinetics best describing the process, highlighting how weathered microplastics may increase antibiotic transport in aquatic systems.
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.
Sorption of fluoroquinolones to nanoplastics as affected by surface functionalization and solution chemistry
Researchers investigated the sorption behavior of two fluoroquinolone antibiotics — norfloxacin and levofloxacin — onto plain and carboxyl-functionalized polystyrene nanoplastics, finding nonlinear sorption isotherms best fit by the Langmuir model and that surface functionalization and solution chemistry significantly affected uptake.
Adsorption-desorption behaviors of ciprofloxacin onto aged polystyrene fragments in aquatic environments
Researchers investigated how UV and chemical aging of polystyrene microplastic fragments affects their adsorption and desorption of the antibiotic ciprofloxacin in aquatic environments, finding that aging increased surface area and altered surface chemistry, thereby enhancing adsorption capacity. The study identified key physicochemical properties controlling antibiotic-microplastic interactions and their potential to affect antibiotic bioavailability in contaminated waters.
Implications of polystyrene and polyamide microplastics in the adsorption of sulfonamide antibiotics and their metabolites in water matrices
Researchers found that polystyrene and polyamide microplastics can absorb sulfonamide antibiotics from water, with smaller particles and acidic conditions increasing absorption significantly. This means microplastics in the environment can act as carriers for antibiotics, potentially spreading antimicrobial resistance. The finding raises concerns because people may be exposed to both microplastics and the drugs they carry through contaminated water and food.
Adsorption behavior of triclosan on polystyrene nanoplastics: The roles of particle size, surface functionalization, and environmental factors
Researchers examined how triclosan, an antimicrobial compound common in personal care products, adsorbs onto polystyrene nanoplastics of different sizes and surface chemistries, finding that smaller particles and functionalized surfaces (with carboxyl or amine groups) bind more triclosan, with pH and salinity further modulating uptake — suggesting nanoplastics can serve as mobile carriers for this contaminant.
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 characteristics of antibiotics on microplastics: The effect of surface contamination with an anionic surfactant
Researchers found that the common anionic surfactant SDBS coating polystyrene and polyethylene microplastics significantly altered their adsorption of the antibiotics oxytetracycline and norfloxacin. SDBS changed the surface charge and hydrophobicity of MPs in ways that increased antibiotic binding, suggesting surfactant-contaminated MPs pose a greater risk as antibiotic vectors in aquatic environments.
A spectroscopic and theoretical investigation of interaction mechanisms of tetracycline and polystyrene nanospheres under different conditions
Researchers investigated how the antibiotic tetracycline adsorbs onto polystyrene nanoplastics under varying environmental conditions, finding that humic acid enhanced adsorption capacity while magnesium ions inhibited it at higher pH, with the interaction driven by electrostatic attraction, π-π stacking, and hydrophobic effects — suggesting nanoplastics can serve as antibiotic carriers in aquatic environments.
Interactionsbetween Nanoplastics and Antibiotics:Implications for Nanoplastics Aggregation in Aquatic Environments
Researchers studied how the antibiotics ciprofloxacin and tetracycline interact with polystyrene nanoplastics in aquatic environments, finding that these drugs alter nanoplastic surface properties and aggregation behavior under environmentally relevant conditions.
Investigation of antibiotic clarithromycin adsorption potential on microplastics
Researchers investigated the adsorption potential of the antibiotic clarithromycin onto various microplastic types under controlled laboratory conditions, examining how surface properties and environmental factors influence pharmaceutical-microplastic interactions. The study found that microplastics can adsorb clarithromycin, raising concern about microplastics acting as vectors for antibiotic transport and spread in aquatic environments.
Sorption of tetracycline antibiotics by microplastics, associated mechanisms, and risk assessments
Researchers systematically investigated how three common microplastic types adsorb tetracycline antibiotics. The study found that polystyrene had the highest adsorption capacity at 178.57 micrograms per gram, followed by PVC and polyethylene, and that PVC and polystyrene strongly retained the antibiotics with minimal desorption, raising concerns about compound pollution from microplastic-antibiotic combinations in the environment.
Enhanced adsorption of oxytetracycline to weathered microplastic polystyrene: Kinetics, isotherms and influencing factors
Researchers compared how weathered and new polystyrene foam particles absorb the antibiotic oxytetracycline from water. They found that beached foam that had been exposed to environmental conditions absorbed roughly twice as much of the drug as virgin material, due to increased surface area and chemical changes from weathering. The study suggests that aged microplastics in the environment are more effective at picking up and transporting pharmaceutical contaminants.
Quantitative assessment of interactions of hydrophilic organic contaminants with microplastics in natural water environment
Researchers quantified how microplastics interact with common antibiotic pollutants in natural water conditions, comparing virgin and environmentally aged polystyrene particles. They found that aged microplastics absorbed significantly more antibiotics than new ones due to increased surface area and chemical changes from weathering. The study suggests that as microplastics age in the environment, they become more effective at concentrating and transporting other harmful pollutants.
Adsorption of Macrolide Antibiotics by Aged Microplastics of Different Sizes: Mechanisms and Effects
Researchers investigated how aging affects the ability of polystyrene microplastics to adsorb macrolide antibiotics in water, testing two particle sizes under simulated natural aging conditions. They found that aging increased surface roughness and oxygen-containing functional groups on the microplastics, significantly enhancing their ability to adsorb azithromycin, clarithromycin, and erythromycin. The findings suggest that weathered microplastics in the environment may carry higher loads of antibiotic contaminants than pristine particles.
The role of microplastics as vectors of antibiotic contaminants via a molecular simulation approach
Researchers used computer simulations to study how microplastics interact with common antibiotics at the molecular level. They found that polystyrene microplastics had a stronger ability to adsorb antibiotics than polypropylene, and that aging of the plastic surfaces enhanced adsorption capacity. The study provides evidence that microplastics can serve as carriers for antibiotic pollutants in the environment, potentially spreading contamination further.
Adsorption of ciprofloxacin to functionalized nano-sized polystyrene plastic: Kinetics, thermochemistry and toxicity
Researchers characterized the adsorption of the antibiotic ciprofloxacin onto carboxylated polystyrene nanoplastics using isothermal titration calorimetry, finding a spontaneous exothermic reaction following pseudo-second-order kinetics and Freundlich isotherm behavior, and demonstrated that nanoplastic-antibiotic complexes may amplify the combined toxicity of both contaminants in aquatic ecosystems.
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.