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20 resultsShowing papers similar to A preliminary study of the interactions between microplastics and citrate-coated silver nanoparticles in aquatic environments
ClearInsights into the interaction of microplastic with silver nanoparticles in natural surface water
Researchers co-exposed three common microplastics — polypropylene, polyethylene, and polystyrene — with silver nanoparticles in natural freshwater and brackish water, finding that their interaction altered the environmental behavior and fate of both contaminants. The results suggest that combined pollution from microplastics and nanomaterials produces effects distinct from either pollutant alone.
The crucial role of heavy metals on the interaction of engineered nanoparticles with polystyrene microplastics
This study examined how heavy metals affect the interaction between engineered nanoparticles and polystyrene microplastics in multi-solute aquatic systems, finding that heavy metal ions alter nanoparticle uptake onto microplastic surfaces and complicate toxicological predictions.
Polystyrene microplastics sunlight-induce oxidative dissolution, chemical transformation and toxicity enhancement of silver nanoparticles
Researchers discovered that polystyrene microplastics can induce sunlight-driven oxidative dissolution and chemical transformation of silver nanoparticles, enhancing their toxicity and revealing important implications for how co-occurring pollutants interact in the environment.
Effects of size and surface charge on the sedimentation of nanoplastics in freshwater
Researchers investigated how size and surface charge of polystyrene nanoplastics affect their sedimentation behavior in freshwater, finding that both properties significantly influence aggregation dynamics and settling rates, with implications for predicting nanoplastic fate in aquatic environments.
Polystyrene nanoplastics and wastewater displayed antagonistic toxic effects due to the sorption of wastewater micropollutants
Researchers found that polystyrene nanoplastics and wastewater micropollutants had antagonistic toxic effects when combined, because the nanoplastics sorbed positively charged pollutants through electrostatic interactions, reducing their bioavailability to aquatic organisms.
Mechanism of low concentrations of polystyrene microplastics influence the cytotoxicity of Ag ions to Escherichia coli
Low concentrations of polystyrene microplastics had minimal direct toxicity to E. coli but dynamically modulated the toxicity of silver ions, initially protecting bacteria by shielding cell membranes and later intensifying toxicity by promoting reactive oxygen species generation depending on the plastic's surface charge. The study highlights the complexity of predicting combined microplastic and metal toxicity in aquatic ecosystems.
Interfacial interaction between micro/nanoplastics and typical PPCPs and nanoplastics removal via electrosorption from an aqueous solution
Researchers synthesized nanoscale polystyrene particles and investigated how they adsorb common pharmaceuticals and personal care products, specifically ciprofloxacin and bisphenol A. The study also explored electrosorption as a method for removing nanoplastics from water, providing insights into both the environmental behavior of nanoplastics and potential remediation strategies.
Antagonistic effect of polystyrene nanoplastics and sliver nanoparticles on Chlorella pyrenoidosa
Researchers tested antagonistic interactions between polystyrene nanoplastics and silver nanoparticles on the freshwater green alga Chlorella, finding that combined exposure produced less toxicity than either agent alone, suggesting that plastic particles can sequester silver nanoparticles and reduce their bioavailability.
Mechanistic Roles of Microplastics in the Phototransformation of Silver Ions in Aquatic Environments
This study found that polystyrene microplastics mediate the transformation of silver ions into silver nanoparticles (Ag0, Ag2O, Ag2S) under natural and UV light irradiation, acting as reactive surfaces that alter silver speciation and potentially increase its bioavailability in aquatic systems.
Microplastics alleviate phytotoxicity of silver nanoparticles in Ottelia cordata submerged leaves
Researchers investigated the combined effects of silver nanoparticles and polystyrene microplastics on the aquatic plant Ottelia cordata, finding that microplastics actually alleviated the phytotoxicity of silver nanoparticles by reducing their bioavailability. The results highlight complex antagonistic interactions between co-occurring aquatic contaminants.
The difference of aggregation mechanism between microplastics and nanoplastics: Role of Brownian motion and structural layer force
The aggregation mechanisms of 100-nm and 1-micrometer polystyrene particles were compared under different water chemistry conditions to understand how microplastics and nanoplastics behave differently in aquatic environments. The study found distinct aggregation pathways between the two size classes, driven by differences in electrostatic forces and surface properties.
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.
Nanoplastic adsorption characteristics of bisphenol A: The roles of pH, metal ions, and suspended sediments
Researchers found that nanoplastics adsorb bisphenol A through electrostatic, pi-pi stacking, and hydrophobic interactions, with adsorption capacity influenced by pH, competing metal ions, and suspended sediments, highlighting nanoplastics as vectors for BPA transport in aquatic environments.
Data acquired in laboratory experiments conducted to characterize Ag bioaccumulation kinetics in Daphnia magna after exposures to polystyrene microplastics and Ag nanoparticles
Researchers assessed how the presence of polystyrene microplastics affects the bioaccumulation of silver nanoparticles in the filter-feeding zooplankton Daphnia magna. The study provides laboratory data on silver uptake kinetics at environmentally relevant concentrations, contributing to understanding how microplastics may interact with other contaminants to alter their biological availability to aquatic organisms.
Critical review of the characteristics, interactions, and toxicity of micro/nanomaterials pollutants in aquatic environments
This review examined the behavior, interactions, and toxicity of micro- and nanoplastics alongside metal nanoparticles in aquatic environments. Researchers found that these pollutants interact in complex ways that can affect organisms, and the study also explored how metal nanoparticles could potentially be used to remove microplastics from water due to their photocatalytic and magnetic properties.
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.
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.
Weathered Microplastics Induce Silver Nanoparticle Formation
Researchers found that weathered polystyrene microplastics can photochemically reduce dissolved silver ions to metallic silver nanoparticles in both freshwater and sand matrices under solar irradiation, revealing a previously unknown mechanism by which microplastics alter the chemical speciation of co-occurring metal contaminants.
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.
Influence of nanoplastic surface charge on eco-corona formation, aggregation and toxicity to freshwater zooplankton
Researchers examined how surface charge and natural organic matter influence the stability and toxicity of polystyrene nanoplastics to freshwater zooplankton. They found that positively charged nanoplastics were significantly more toxic than negatively charged ones, and that natural organic matter formed an eco-corona on the particles that reduced their toxicity. The study highlights that both particle surface properties and environmental conditions play critical roles in determining nanoplastic impacts on aquatic organisms.