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61,005 resultsShowing papers similar to Copper adsorption on microplastics: Investigating toxicity in an in vitro digestive environment
ClearCopper 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 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.
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.
Pollutant adsorption on microplastic and its release during digestion processes
Researchers investigated the adsorption of copper and PFAS onto polystyrene, polypropylene, and polyethylene microplastics and examined the subsequent release of these contaminants during simulated digestion processes. The study aimed to clarify the role of microplastics as vectors that increase contaminant bioavailability in marine biota.
Pollutant 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.
Insights into adsorption behavior and mechanism of Cu(II) onto biodegradable and conventional microplastics: Effect of aging process and environmental factors
Researchers compared how biodegradable and conventional microplastics adsorb copper ions from water, examining how aging processes and environmental factors influence this interaction. The study found that aged microplastics had a greater capacity to bind copper than fresh ones, suggesting that weathered plastic debris in the environment may serve as carriers for heavy metal contaminants.
Copper Adsorption to Microplastics and Natural Particles in Seawater: A Comparison of Kinetics, Isotherms, and Bioavailability
Researchers compared copper adsorption onto pristine and aged microplastics versus natural particles like algae and sediments in seawater, finding that natural particles generally had higher metal-sequestering capacity, challenging the emphasis on microplastics as dominant metal-transport vectors.
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.
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.
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.
Bioaccessibility of Trace Metals and Rare Earth Elements (REE) in Microplastic
Researchers measured the bioaccessibility of trace metals and rare earth elements adsorbed onto beach microplastics using simulated digestive fluid conditions. Metals were released from microplastic surfaces under stomach acid conditions, indicating that plastic ingestion can deliver these contaminants to digestive systems of marine organisms and humans.
Microplastics as Vectors of Chromium and Lead during Dynamic Simulation of the Human Gastrointestinal Tract
Using a dynamic in vitro simulator of the human gastrointestinal tract, researchers showed that chromium and lead adsorbed to polyethylene and polypropylene microplastics are released and become bioaccessible in gut conditions, suggesting microplastics can act as vectors delivering heavy metals to human tissues.
Assessing potential toxicity and metal bioavailability of secondary microplastics using in-vitro human gastric models
This study assessed the potential toxicity and metal bioavailability of sediment samples from an aquatic environment, evaluating how co-occurring microplastics may influence metal toxicity by altering metal speciation and uptake. The results highlight complex interactions between plastic particles and metal contaminants in sediments.
Enhanced copper adsorption by polyamide and polylactic acid microplastics: The role of biofilm development and chemical aging
Researchers studied how chemical aging and biofilm growth on polyamide and polylactic acid microplastics changed their ability to absorb copper from water. Both processes significantly increased the surface area and chemical reactivity of the plastics, making them absorb substantially more copper than fresh microplastics. The study suggests that as microplastics age and develop biofilms in natural waterways, they become increasingly effective at concentrating heavy metals, potentially altering how these contaminants move through aquatic environments.
Bioaccessibility of microplastic-associated heavy metals using an in vitro digestion model and its implications for human health risk assessment
Researchers evaluated the bioaccessibility of heavy metals associated with microplastics using an in vitro digestion model to assess human health risks. The study found significant adsorption of arsenic, chromium, cadmium, and lead onto polyvinyl chloride microplastics, with varying bioaccessibility across different digestive phases. The findings suggest that incorporating bioaccessibility data into risk assessments may provide more accurate estimates of health risks from ingesting microplastic-associated heavy metals.
Antidote or Trojan horse for submerged macrophytes: Role of microplastics in copper toxicity in aquatic environments
Researchers investigated whether polyethylene microplastics act as an antidote or a Trojan horse for copper toxicity to submerged aquatic plants. The study found that microplastics reduced dissolved copper concentrations through adsorption but could then release copper-loaded particles that were taken up by plants. The results suggest that microplastics may initially reduce copper toxicity in water but ultimately serve as carriers that deliver copper directly into plant tissues.
Adsorption behavior of Cu(II) on UV-aged polyethylene terephthalate and polypropylene microplastics in aqueous solution
Researchers studied how UV aging changes the ability of PET and polypropylene microplastics to adsorb copper ions from water. UV exposure altered the surface properties of both plastics, increasing their capacity to bind heavy metals compared to pristine particles. The findings suggest that weathered microplastics in the environment may be more effective at concentrating toxic metals, potentially increasing ecological risks in contaminated waterways.
Reduced dietary Ca, Cu, Zn, Mn, and Mg bioavailability but increased Fe bioavailability with polyethylene microplastic ingestion in a mouse model: Changes in intestinal permeability and gut metabolites
Researchers fed mice diets containing polyethylene microplastics of two different sizes for 35 days and measured how plastic exposure affected the absorption of essential dietary minerals. They found that microplastic ingestion significantly reduced the bioavailability of calcium, copper, zinc, manganese, and magnesium, while unexpectedly increasing iron absorption. The study suggests that chronic microplastic ingestion could interfere with nutritional mineral uptake, potentially contributing to mineral deficiencies over time.
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.
Speciation and release risk of heavy metals bonded on simulated naturally-aged microplastics prepared from artificially broken macroplastics
Researchers investigated heavy metal speciation and release risk from naturally aged microplastics in simulated saltwater and gastrointestinal solutions, finding that different metals varied in adsorption capacity and release behavior, posing potential risks to both ecosystems and human health.
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.
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/desorption of mercury (II) by artificially weathered microplastics: Kinetics, isotherms, and influencing factors
Researchers studied how different types of weathered microplastics absorb and release mercury, finding that microplastics from wastewater treatment plants and rubber particles had the highest affinity for this toxic metal. While less than 3% of absorbed mercury was released in freshwater, up to 73% was released under conditions mimicking bird digestion, indicating that eating contaminated microplastics significantly increases mercury exposure. These findings are relevant to human health because they suggest that microplastics in seafood could deliver concentrated doses of toxic mercury during digestion.
Adsorption properties and mechanism of Cu(II) on virgin and aged microplastics in the aquatic environment
Researchers examined how UV aging changes the surface properties of polyamide and polylactic acid microplastics and affects their ability to adsorb copper ions in water. The study found that UV irradiation altered the physical and chemical characteristics of both plastic types, increasing their capacity to bind heavy metals. Evidence indicates that weathered microplastics may act as more effective carriers of heavy metal contaminants in aquatic environments compared to virgin plastics.