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20 resultsShowing papers similar to Metal adsorption by naturally aged polymers in the river ganga: An environmental assessment
ClearMetal adsorption by naturally aged polymers in the river ganga: An environmental assessment
Researchers investigated how naturally aged microplastics from the Ganga River adsorb metals, assessing the environmental risk of metal-loaded plastic particles in a major river system. The study found that aged microplastics adsorb higher concentrations of metals than virgin particles, increasing their potential for toxicity transfer.
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.
Microplastics meet micropollutants in a central european river stream: Adsorption of pollutants to microplastics under environmentally relevant conditions
Researchers investigated how microplastics adsorb organic micropollutants in a Central European river under real-world conditions. They found that aged microplastics showed higher adsorption capacity for contaminants compared to pristine ones, and that the type of plastic material influenced which pollutants were absorbed. The findings suggest that microplastics in rivers can act as carriers for harmful chemicals, potentially spreading contamination through aquatic ecosystems.
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.
Microplastics in river water: occurrence, weathering, and adsorption behaviour
Researchers examined microplastics in river water, characterizing their occurrence, degree of weathering, and capacity to adsorb co-contaminants. The study highlights microplastics as vectors that can transport and re-release other pollutants in freshwater systems.
Adsorption mechanism of trace heavy metals on microplastics and simulating their effect on microalgae in river
Researchers investigated how three common types of microplastics adsorb trace heavy metals under varying temperature and salinity conditions in freshwater. They found that microplastics adsorb metals primarily through electrostatic forces in a single-layer pattern, with warmer temperatures and lower salinity increasing adsorption capacity. The study also showed that heavy metals carried by microplastics can inhibit the growth of freshwater microalgae, demonstrating how plastics act as vectors for metal contamination in rivers.
Influence of microplastics on nutrients and metal concentrations in river sediments
Researchers investigated how microplastics influence nutrient and metal concentrations in river sediments, finding that microplastics alter the distribution of pollutants through their capacity to adsorb contaminants and support biofilm formation on their hydrophobic surfaces.
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.
Assessment of metals associated with virgin pre-production and freshwater microplastics collected by an Italian river
Researchers assessed the metals associated with virgin pre-production microplastics and freshwater microplastics collected from an Italian river, comparing metal content and sorption behavior between pristine pellets and environmentally weathered particles. The study found that environmental exposure altered the metal-binding capacity of microplastics, underscoring their role as vectors for metal contaminants in freshwater 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.
How aging microplastics influence heavy metal environmental fate and bioavailability: A systematic review
This systematic review found that environmental aging (UV, weathering) degrades microplastics into smaller particles with higher surface reactivity, increasing their capacity to adsorb heavy metals. These aged microplastic-heavy metal complexes bioaccumulate through the food chain, posing greater ecological and human health risks than either pollutant alone.
Effects of virgin microplastics on the transport of Cd (II) in Xiangjiang River sediment
Six types of microplastics were found to change how cadmium (a toxic heavy metal) binds to and moves through river sediments. The presence of microplastics altered cadmium adsorption behavior, suggesting that plastics in river sediments can affect the mobility and bioavailability of co-occurring heavy metal pollutants.
[Effects of Aging on the Cd Adsorption by Microplastics and the Relevant Mechanisms].
This study examined how aging affects the ability of microplastics — including polyethylene and polystyrene — to adsorb the heavy metal cadmium. Weathered microplastics showed different adsorption behavior than virgin particles, which has implications for how microplastics transport toxic metals through aquatic environments.
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.
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.
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.
Occurrence, fate and removal of microplastics as heavy metal vector in natural wastewater treatment wetland system
Researchers studied microplastic contamination in a natural wastewater treatment wetland system in Eastern India, finding high concentrations in both water and sediments along with toxic heavy metals adsorbed onto the plastic particles. The study found that microplastics acted as vectors for heavy metal contamination in fish and that the treatment ponds removed approximately 53% of surface water microplastics, highlighting the need to account for microplastic pollution in natural wastewater treatment systems.
Microplastics aged in various environmental media exhibited strong sorption to heavy metals in seawater
Researchers aged six types of microplastics — including polyamide and PET — in different environments and then measured their adsorption of heavy metals in seawater, finding that aging consistently increased metal sorption capacity and that environmental medium during aging strongly influenced the degree of surface modification.
A systematic review of microplastics in the environment: Sampling, separation, characterization and coexistence mechanisms with pollutants
Massive microplastic pollution was documented across Africa, Asia, India, South Africa, North America, and Europe, with MPs acting as carriers of heavy metals that enter organisms and cause harm. The adsorption capacity of organic pollutants onto microplastics correlated with hydrophobicity, surface area, and functional group characteristics.
Partitioning of heavy metals in sediments and microplastics from stormwater runoff
Researchers studied how heavy metals distribute between sediment particles and microplastics in stormwater runoff. UV-weathered microplastics absorbed significantly more heavy metals than new plastic, competing with sediments for metal uptake. This matters because microplastics in stormwater can transport concentrated heavy metals from urban areas into rivers and lakes, creating a combined pollution problem.