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61,005 resultsShowing papers similar to A spectroscopic and theoretical investigation of interaction mechanisms of tetracycline and polystyrene nanospheres under different conditions
ClearThe effects of environmental conditions on the enrichment of antibiotics on microplastics in simulated natural water column
Researchers investigated how environmental ageing conditions affect the ability of microplastics to adsorb the antibiotic tetracycline, finding that pH, ionic strength, and temperature had little effect, but humic acid significantly reduced adsorption capacity. The reduction was attributed to humic acid covering plastic surfaces, altering hydrophobicity, and competing for adsorption sites via electrostatic repulsion.
Adsorption behavior and quantum chemical analysis of surface functionalized polystyrene nano-plastics on gatifloxacin.
Researchers studied how three types of polystyrene nanoplastics — unmodified, amino-modified, and carboxyl-modified — adsorb the antibiotic gatifloxacin, finding that surface chemistry strongly influences uptake. This matters because nanoplastics that absorb antibiotics could serve as vectors carrying these pharmaceuticals into aquatic ecosystems and the organisms that live there.
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.
Insights 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.
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.
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.
Influencing Mechanisms of Exogenous and Endogenous Dissolved Organic Matter on the Adsorption of Tetracycline on UV ‐Light Aged Microplastics
Researchers investigated how humic acid and microplastic-derived dissolved organic matter (MP-DOM) influence tetracycline adsorption onto UV-aged polyethylene and polystyrene microplastics, finding that UV aging increased surface area and functional groups on the plastics while dissolved organic matter altered adsorption capacity through competitive and facilitative mechanisms.
Sorption behavior of oxytetracycline on microplastics and the influence of environmental factors in groundwater: Experimental investigation and molecular dynamics simulation
This study examined how oxytetracycline antibiotic adsorbs onto different types of microplastics and how environmental factors such as pH, salinity, and UV exposure influence sorption behavior. The findings indicate microplastics can act as vectors transporting antibiotics through 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.
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 tetracyclines onto polyethylene microplastics: A combined study of experiment and molecular dynamics simulation
The adsorption of three tetracycline antibiotics (TC, CTC, and OTC) onto polyethylene microplastics was studied in aqueous solution through a combination of batch experiments and computational modeling. Results showed that hydrophobic interactions and surface properties of PE microplastics drive tetracycline adsorption, contributing to antibiotic accumulation on environmental plastic debris.
Interfacial interaction between diverse microplastics and tetracycline by adsorption in an aqueous solution
Polyethylene microplastics showed the strongest adsorption of the antibiotic tetracycline among three plastic types tested, and the presence of metals like lead and zinc enhanced tetracycline adsorption while copper reduced it. Ion exchange was identified as the primary adsorption mechanism, suggesting that microplastics in aquaculture settings could concentrate antibiotics and increase their environmental persistence.
Microplastics enhance the adsorption capacity of zinc oxide nanoparticles: Interactive mechanisms and influence factors
Researchers found that the presence of microplastics enhances the ability of zinc oxide nanoparticles to adsorb antibiotics from water, with aged microplastics showing different effects than virgin ones. The interactions between microplastics and nanoparticles were driven primarily by electrostatic forces, and factors like pH and humic acid further influenced adsorption rates. The study warns that microplastics may help spread antibiotic contamination more widely through aquatic environments.
Adsorption behavior of triclosan by different microplastics and the impact of water chemistry
Researchers investigated how triclosan — an antimicrobial compound — adsorbs onto four types of microplastics under varying water chemistry conditions. They found hydrophobic partitioning was the dominant adsorption mechanism, with solution pH, ionic strength, and dissolved organic matter all influencing uptake capacity.
Effects of Salinity, pH, and Cu(II) on the Adsorption Behaviors of Tetracycline onto Polyvinyl Chloride Microplastics: A Site Energy Distribution Analysis
PVC microplastic adsorption of tetracycline antibiotic decreased with increasing salinity and pH, while coexisting Cu2+ ions enhanced adsorption through bridging interactions, providing insights into how environmental factors affect antibiotic-microplastic interactions in aquatic systems.
Cation-π mechanism promotes the adsorption of humic acid on polystyrene nanoplastics to differently affect their aggregation: Evidence from experimental characterization and DFT calculation
Researchers investigated how humic acid and metal ions in natural lake water affect the clumping behavior of polystyrene nanoplastics, finding that a cation-π bonding mechanism — where metal ions bridge humic acid molecules onto the nanoplastic surface — governs whether particles aggregate or remain dispersed, with major implications for their environmental persistence and toxicity.
Bioleaching of Typical Electronic Waste—Printed Circuit Boards (WPCBs): A Short Review
This study examined the adsorption of tetracycline antibiotics onto polystyrene microplastics under varying pH and ionic strength conditions, finding that adsorption capacity decreased at higher pH and increased with ionic strength. The findings suggest microplastics could serve as vectors for antibiotic transport in aquatic systems.
Adsorption–Desorption Behaviors of Enrofloxacin and Trimethoprim and Their Interactions with Typical Microplastics in Aqueous Systems
Researchers investigated how two common aquaculture antibiotics, enrofloxacin and trimethoprim, adsorb to and desorb from polystyrene, polyvinyl chloride, and polyethylene microplastics in water. They found that adsorption followed multilayer patterns driven by physical interactions including hydrogen bonding and electrostatic forces, with PS and PVC showing higher adsorption capacity than PE. The study highlights how microplastics can serve as carriers for antibiotic pollutants in aquatic environments, with high salinity and pH changes promoting desorption and secondary contamination.
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.
Microplastics play a minor role in tetracycline sorption in the presence of dissolved organic matter
Researchers studied the sorption of the antibiotic tetracycline onto microplastics in the presence of dissolved organic matter, finding that dissolved organics competed strongly for binding sites on microplastics, meaning real-world conditions substantially reduce microplastic uptake of tetracycline.
The adsorption of drugs on nanoplastics has severe biological impact
Researchers used computational chemistry to examine how the antibiotic tetracycline adsorbs onto four different types of nanoplastics — polyethylene, polypropylene, polystyrene, and nylon. They found that nylon nanoplastics showed the strongest binding affinity for tetracycline, and these drug-plastic aggregates had significant biological impacts. The study suggests that nanoplastics carrying adsorbed pharmaceuticals could amplify health risks compared to either contaminant alone.
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.
Adsorption of drugs on nanoplastics: Modeling challenges and experimental proof
Researchers investigated the adsorption of the antibiotic tetracycline onto four nanoplastic types — polyethylene, polypropylene, polystyrene, and nylon 6,6 — using computational chemical modeling combined with experimental validation. The study reveals that modeling nanoplastic-drug interactions requires careful conformation sampling and highlights the potential for these aggregates to alter both drug bioavailability and microplastic toxicity.
Sorption of tetracycline onto hexabromocyclododecane/polystyrene composite and polystyrene microplastics: Statistical physics models, influencing factors, and interaction mechanisms
Researchers found that the flame retardant additive hexabromocyclododecane (HBCD) increases the hydrophobicity of polystyrene microplastics and significantly enhances their capacity to sorb the antibiotic tetracycline, with the combined HBCD-PS particles posing heightened pollutant transport risks in aquatic environments.