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20 resultsShowing papers similar to Pollutant adsorption on microplastic and its release during digestion processes
ClearPollutant adsorption on microplastic and its release during digestion processes
Researchers investigated how microplastics act as contaminant vectors for copper and PFAS by adsorbing these substances onto polystyrene, polypropylene, and polyethylene particles and then evaluating their release under simulated gastrointestinal conditions using the Infogest static digestion protocol. They compared adsorption and release across polymer types and particle morphologies (spherical microbeads vs. post-consumer irregular microplastics) to assess how pH, enzymes, and bile affect desorption of these contaminants.
Copper adsorption on microplastics: Investigating toxicity in an in vitro digestive environment
Researchers investigated how the presence of naturally weathered microplastics affects the bioaccessibility and toxicity of adsorbed copper during simulated gastrointestinal digestion. Results showed that microplastics altered the release and uptake of copper in the gut, potentially increasing or decreasing its bioavailable fraction depending on conditions.
Copper adsorption on microplastics: Investigating toxicity in an in vitro digestive environment
Researchers analyzed how the presence of microplastics affects copper bioaccessibility and toxicity during in vitro digestion, testing naturally weathered particles as a realistic exposure model. Microplastics altered the bioaccessible fraction of copper, with implications for how co-ingested metals behave in the human gut.
Adsorption properties and influencing factors of Cu(II) on polystyrene and polyethylene terephthalate microplastics in seawater
Researchers investigated how polystyrene and polyethylene terephthalate microplastics adsorb copper ions in seawater, characterizing adsorption kinetics and influencing factors to understand microplastics' role as vectors for heavy metal pollutants in marine environments.
Characterization of polyethylene and polyurethane microplastics and their adsorption behavior on Cu2+ and Fe3+ in environmental matrices
Researchers characterized polyethylene and polyurethane microplastics and measured their ability to adsorb heavy metals, finding that both types can bind copper and iron ions from water — raising concern that microplastics may act as carriers that transport toxic metals deeper into aquatic ecosystems and food chains.
Adsorption of copper by naturally and artificially aged polystyrene microplastics and subsequent release in simulated gastrointestinal fluid
Researchers compared how naturally and artificially aged polystyrene microplastics adsorb copper and then release it in simulated digestive fluids. They found that naturally aged microplastics from a lake adsorbed the most copper, largely due to metallic oxide deposits on their surfaces. The study suggests that aged microplastics may act as vectors for transporting metals into organisms through ingestion, with the aging method significantly affecting how much metal is carried and released.
Evaluation of microplastic contamination by metals in a controlled environment: A risk to be considered
Researchers found that polyethylene terephthalate microplastics readily adsorb nickel, copper, and zinc metals in aquatic environments, demonstrating that degraded plastics can act as carriers for metal contaminants and pose compounded environmental risks.
Evaluation of microplastic contamination by metals in a controlled environment: A risk to be considered
Researchers found that PET microplastics readily adsorb nickel, copper, and cobalt under controlled conditions, confirming that metal contamination of microplastics in aquatic systems represents a compounding environmental risk worth monitoring.
Potential of Adsorption of Diverse Environmental Contaminants onto Microplastics
Researchers assessed the ability of four common types of microplastics to adsorb hazardous environmental contaminants including dyes and heavy metals. They found that dyes were adsorbed through physical processes while heavy metal adsorption varied by plastic type, with polystyrene showing the highest capacity for certain metals. The study confirms that microplastics can act as vectors for diverse pollutants, potentially increasing the environmental mobility and bioavailability of toxic substances.
The potential of polyethylene microplastics to transport copper in aquatic systems: Adsorption and desorption studies
Researchers investigated the adsorption and desorption of copper (II) ions onto polyethylene microplastics in aquatic systems, varying operational parameters such as equilibrium time, pH, temperature, and initial metal concentration. They found that polyethylene microplastics can act as vectors for copper transport in water, with sorption behavior governed by multiple physicochemical factors.
Relative importance of microplastics as a pathway for the transfer of hydrophobic organic chemicals to marine life
Researchers assessed the relative importance of microplastics as a pathway for transferring hydrophobic organic chemicals to marine life. The study suggests that while microplastics can carry high concentrations of contaminants, factors like gut surfactants, pH, and temperature influence desorption rates, and modeling indicates other exposure routes may be more significant in natural environments.
Adsorption of Copper by Naturally and Artificially Aged Microplastics and Subsequent Release in Simulated Gastrointestinal Fluid
This study found that both naturally and artificially aged polystyrene microplastics adsorb copper more effectively than virgin plastic, and that the bound copper is released in simulated digestive fluids. This means aged microplastics ingested by organisms could release toxic heavy metals inside their bodies, increasing the health risk beyond the plastic itself.
Mechanistic Insights into PFAS Adsorption on Microplastics: Effects of Contaminant Properties and Water Chemistry
Researchers investigated how two widely detected PFAS compounds, PFOS and PFOA, adsorb onto five common types of microplastics in aquatic environments. The study found that contaminant properties and water chemistry significantly influence adsorption behavior, confirming that microplastics can serve as carriers for PFAS transport in waterways.
How Digestive Processes Can Affect the Bioavailability of PCBs Associated with Microplastics: A Modeling Study Supported by Empirical Data
Researchers used a simulated human digestive model to study whether gut processes change how quickly chemicals like PCBs transfer on and off microplastic particles. They found that digestive enzymes and bile salts significantly accelerated the release of these chemicals from microplastics, suggesting that the human gut environment may increase exposure to plastic-associated pollutants. The study provides new evidence that microplastics could act as carriers that release harmful chemicals more readily during digestion.
Adsorption and Desorption Behavior of Microplastics on Copper Ions in Aqueous Solution
This study investigated how microplastics of different types and surface chemistry adsorb and release copper ions in water. The findings show that microplastics can pick up and later release heavy metals depending on environmental conditions, acting as vectors that transport toxic metals through aquatic ecosystems.
Measuring the Effect of Dietary Microplastic on Biomagnification Potential of Environmental Contaminants and Plastic Additives
Researchers measured the effect of dietary microplastic ingestion on the biomagnification potential of hydrophobic organic contaminants and plastic additives in the gastrointestinal tract, testing competing hypotheses about whether microplastics increase, decrease, or negligibly affect contaminant uptake.
Sorption and desorption kinetics of PFOS to pristine microplastic
Researchers investigated how the persistent pollutant PFOS sorbs onto polyethylene microplastic particles of different sizes over six months. They found that smaller microplastic particles adsorbed more PFOS due to their greater surface area, and that PFOS could be released from the microplastics under simulated fish gut conditions. The findings suggest that microplastics may act as carriers of chemical pollutants into the digestive systems of aquatic organisms.
The adsorption and desorption behaviors of phenanthrene and pyrene onto microplastics in the aquatic environment and digestive fluids
This study examined how polycyclic aromatic hydrocarbons (PAHs) like phenanthrene and pyrene adsorb to and desorb from four types of microplastics in both freshwater and simulated digestive fluids. The findings show that PAHs bind strongly to microplastics and can be released under digestive conditions, suggesting that microplastics can deliver organic pollutants to organisms that ingest them.
Exploring the Role of Polystyrene Microplastics in Cu Binding in Sea Surface Waters: An Experimental Perspective for Future Research
The role of polystyrene microplastics in binding copper (Cu) and altering its environmental mobility and toxicity was investigated, finding that microplastics can both adsorb and release copper depending on environmental conditions. This has implications for how microplastics modulate heavy metal hazards in contaminated environments.
Effect of microplastics on the environmental behavior of emerging contaminants in aquatic matrices
This study examines how microplastics affect the environmental behavior of emerging contaminants in aquatic systems. Microplastics can adsorb other pollutants and alter their bioavailability, potentially increasing or decreasing toxic effects depending on the chemicals and environmental conditions.