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20 resultsShowing papers similar to Sorption of Platinum and Palladium on Polyethylene Microplastics in Natural Water
ClearFeatures of Heavy Metals Sorption by Microplastics in Environmentally Relevant Conditions
Experiments using aged PET microplastics in natural lake water showed that the particles sorb heavy metals (cobalt, nickel, copper, cadmium, lead) in environmentally relevant concentrations, but the sorption isotherms differed from those measured in synthetic laboratory solutions. This matters because microplastics acting as vectors for heavy metals in real freshwater conditions could increase metal bioavailability and toxicity to aquatic life and potentially to humans who drink the water.
Microplastics as an emerging anthropogenic vector of trace metals in freshwater: Significance of biofilms and comparison with natural substrates
Scientists placed virgin polystyrene microplastics in a eutrophic urban lake and a drinking water reservoir for four weeks to allow biofilm development, then measured trace metal accumulation, finding that biofilm-coated microplastics accumulated significantly more metals than virgin plastics or natural substrates.
Adsorption of trace metals by microplastic pellets in fresh water
Researchers measured the adsorption of trace metals by microplastic pellets in freshwater, finding that pellets accumulate metals from the surrounding water, potentially concentrating metals and altering their bioavailability to aquatic organisms.
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.
Study on the Adsorption Behavior and Mechanism of Heavy Metals in Aquatic Environment before and after the Aging of Typical Microplastics
Researchers investigated the adsorption behavior and mechanisms of heavy metals by typical microplastics before and after environmental aging, finding that aging significantly alters microplastics' surface properties and capacity to bind metals such as cadmium and lead in aquatic systems.
Interaction of microplastics with metal(oid)s in aquatic environments: What is done so far?
This review assembled the mechanisms by which microplastics sorb hazardous metals and metalloids in aquatic environments, examining how weathering, biofilm formation, and environmental conditions influence the transport and bioavailability of these contaminants.
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.
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.
Surface adsorption of metallic species onto microplastics with long-term exposure to the natural marine environment
Researchers deployed pre-production polyethylene pellets in the ocean following an accidental spill and recovered them after extended natural exposure, finding that the pellets accumulated a diverse range of metals from seawater, with concentrations increasing over time and varying by metal based on surface chemistry.
The role of microplastics biofilm in accumulation of trace metals in aquatic environments
This review examines how biofilms that form on microplastics in aquatic environments enhance the accumulation of trace metals from surrounding water. Researchers found that microorganisms colonizing plastic surfaces produce extracellular substances that facilitate metal sorption, effectively turning microplastics into concentrated carriers of metallic contaminants. The study highlights the dual pollution risk posed by microplastics serving as both physical pollutants and vehicles for toxic metal transport in waterways.
Reframing microplastics as a ligand for metals reveals that water quality characteristics govern the association of cadmium to polyethylene
Researchers reframed microplastics as a chemical ligand for metals and studied how water quality characteristics govern cadmium binding to polyethylene particles. They found that factors like pH, dissolved organic carbon, and water hardness significantly influenced how much cadmium adhered to the plastic surface. The study suggests that the environmental risk of microplastics as metal carriers depends heavily on local water chemistry conditions.
Comparative analysis of kinetics and mechanisms for Pb(II) sorption onto three kinds of microplastics
The sorption kinetics and mechanisms of lead (Pb(II)) onto three types of microplastics were compared to understand how plastic debris concentrates heavy metals in aquatic environments. The study found polymer-specific differences in sorption capacity and mechanism, with implications for how microplastics alter the distribution and bioavailability of lead in contaminated water.
Micro-nanoplastics and metals : Development of material models and sorption properties in natural environments
This dissertation examines how micro- and nanoplastics interact with heavy metals in natural environments, developing material models to understand their sorption properties. Since plastics can act as carriers for toxic metals — concentrating and transporting them through ecosystems — the research has important implications for understanding combined pollution risks.
Adsorption behavior of organic pollutants and metals on micro/nanoplastics in the aquatic environment
This review examines how micro- and nanoplastics in aquatic environments adsorb organic pollutants and metals onto their surfaces, effectively acting as carriers for other contaminants. Researchers found that environmental factors like pH, salinity, and aging of the plastic significantly influence this sorption behavior. The findings raise concerns that microplastics may increase the bioavailability and toxicity of chemical pollutants in waterways.
Sorption behavior and mechanisms of thallium to microplastics
Researchers studied the adsorption of the highly toxic metal thallium onto polyethylene, polystyrene, and polypropylene microplastics in fresh and seawater, finding polystyrene had the highest adsorption capacity through surface complexation, suggesting microplastics may act as vectors for thallium in aquatic environments.
Evaluating the role of microplastics as a vector in metal cycling within the River Thames
Researchers characterized how microplastics in River Thames water adsorb toxic heavy metals, comparing adsorption capacity across different plastic types and water chemistry conditions. Microplastics consistently adsorbed metals including lead, cadmium, and copper, providing the first data on metal-binding capacity for Thames microplastics and supporting their role as carriers of inorganic pollutants in urban rivers.
The potential of microplastics as carriers of metals
Five types of microplastics were tested for their ability to adsorb heavy metals (Cd, Co, Cr, Cu, Ni, Pb, Zn) in different water matrices, finding significant adsorption of lead, chromium, and zinc—especially on polyethylene and PVC—with surface area and porosity as key drivers. The study identifies microplastics as potential vectors for heavy metal transport and transfer through aquatic food chains.
Insights Into the Adsorption Behavior of Polyethylene Microplastics Towards Lead(II) Ions
Researchers investigated the adsorption behavior of lead(II) ions onto polyethylene microplastics in freshwater environments by systematically varying initial Pb(II) concentration, pH, and residence time, using scanning electron microscopy and other characterization methods to elucidate the interaction dynamics and sorption mechanisms between this common metal contaminant and microplastic surfaces.
How do microplastics adsorb metals? A preliminary study under simulated wetland conditions
Researchers investigated how different plastic polymer types adsorb metals under conditions simulating the Poyang Lake wetland environment, including sediment, water chemistry, and organic matter. Adsorption capacity varied substantially between polymer types, with aged and weathered plastics showing higher metal uptake than pristine particles, and wetland-specific chemistry influencing adsorption mechanisms.
Partitioning of chemical contaminants to microplastics: Sorption mechanisms, environmental distribution and effects on toxicity and bioaccumulation
This review critically examines how chemical contaminants like persistent organic pollutants and heavy metals sorb onto microplastic surfaces in the environment. Researchers found that while microplastics can concentrate pollutants at levels far above surrounding water, the actual contribution of microplastics to contaminant transfer into organisms may be less significant than direct exposure from water and food. The study calls for more realistic experimental designs to clarify the true risk.