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61,005 resultsShowing papers similar to Adsorption of some hazardous aromatic hydrocarbons by various pristine and heat-activated aged microplastics as potential pollutant carriers in aquatic environment
ClearSeasonal variation and spatial distribution of microplastics in tertiary wastewater treatment plant in South Korea
Researchers studied the sorption of polycyclic aromatic hydrocarbons (PAHs) onto weathered polypropylene microplastics in seawater, finding that weathering increased surface area and adsorption capacity compared to pristine particles. This suggests environmental aging enhances microplastics as vectors for hydrophobic pollutants.
Evaluating the effect of different modified microplastics on the availability of polycyclic aromatic hydrocarbons
Researchers investigated how weathering processes alter the ability of polyethylene microplastics to affect the bioavailability of polycyclic aromatic hydrocarbons, finding that etching and UV aging increased surface oxygen groups, specific surface area, and pore volume. Free PAH concentrations decreased with increasing microplastic concentration for most hydrophobic PAHs, and UV aging only slightly altered sorption coefficients compared to pristine microplastics.
The effect of polymer aging on the uptake of fuel aromatics and ethers by microplastics
Researchers found that UV weathering and aging of microplastics significantly increased their sorption of fuel-related aromatic contaminants (BTEX) and ethers compared to virgin plastics. The results suggest that aged microplastics in the environment, which have higher surface oxidation, accumulate higher concentrations of fuel-related contaminants than fresh plastic particles.
Different partition of polycyclic aromatic hydrocarbon on environmental particulates in freshwater: Microplastics in comparison to natural sediment
This study investigated how the polycyclic aromatic hydrocarbon phenanthrene partitions between water and three common plastic types, finding that polymer composition strongly influences sorption behavior. The results help explain how microplastics act as vectors for toxic organic compounds in aquatic environments.
Sorption of Pyrene and Fluoranthene onto Common Microplastics Under Freshwater Conditions
Researchers investigated how two common polycyclic aromatic hydrocarbons, pyrene and fluoranthene, bind to six different types of microplastic polymers under freshwater conditions. The study found significant differences in sorption capacity across polymer types, confirming that microplastics can act as vectors for transporting harmful organic pollutants through aquatic environments.
Insights into adsorption mechanisms of nitro polycyclic aromatic hydrocarbons on common microplastic particles: Experimental studies and modeling
Researchers investigated how nitro polycyclic aromatic hydrocarbons adsorb onto common microplastics, finding that the process is controlled by chemical adsorption and hydrophobic partitioning, with pollutant hydrophobicity being the dominant factor influencing adsorption capacity.
Adsorption Behavior and Interaction of Micro-Nanoplastics in Soils and Aquatic Environment
This review examined how micro- and nanoplastics adsorb environmental pollutants in soil and aquatic environments, acting as vectors that transfer and enhance the bioavailability of contaminants. Aging and weathering processes that alter plastic surface properties were identified as key factors influencing adsorption capacity and pollutant interactions.
Sorption of organic compounds by aged polystyrene microplastic particles
Researchers tested the sorption of organic compounds by aged polystyrene microplastic particles and found that weathering increased their sorption capacity, meaning environmental aging makes microplastics more effective at accumulating and transporting pollutants.
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.
Yellowing, Weathering and Degradation of Marine Pellets and Their Influence on the Adsorption of Chemical Pollutants
Marine plastic pellets collected after prolonged ocean exposure showed yellowing, surface cracking, and chemical degradation compared to virgin pellets, and these weathered plastics adsorbed significantly higher concentrations of persistent organic pollutants. The study demonstrates that environmental aging increases microplastics' capacity to act as vectors for chemical contaminants.
Aging characteristics of polylatic acid microplastics and their adsorption on hydrophilic organic pollutants: mechanistic investigations and theoretical calculations
Researchers characterized how polylactic acid microplastics undergo UV and thermal aging in aquatic environments, finding that aging altered surface chemistry, increased hydrophilicity, and enhanced adsorption of heavy metal pollutants—raising concerns about aged biodegradable plastics as carriers of co-contaminants.
Behavior and mechanism of atrazine adsorption on pristine and aged microplastics in the aquatic environment: Kinetic and thermodynamic studies
Researchers systematically explored how the pesticide atrazine adsorbs onto both pristine and aged microplastics in aquatic environments. The study found that aged microplastics had higher adsorption capacities than pristine ones, with the aging process and pH significantly affecting surface charge and adsorption behavior, suggesting that weathered microplastics may carry greater loads of chemical contaminants.
Comparative evaluation of sorption kinetics and isotherms of pyrene onto microplastics
This study compared how quickly and how much pyrene — a common polycyclic aromatic hydrocarbon — is absorbed by different types of microplastics in aquatic environments. The results indicate that microplastic polymer type significantly affects how well it concentrates and potentially transports toxic organic chemicals.
Laboratory simulation of microplastics weathering and its adsorption behaviors in an aqueous environment: A systematic review
UV photo-oxidation and physical abrasion are the most practical laboratory methods for simulating microplastic weathering; aging increases surface area and oxygen-containing functional groups, altering pollutant adsorption behavior and potentially increasing environmental risks.
Environmental behaviors of microplastics in aquatic systems: A systematic review on degradation, adsorption, toxicity and biofilm under aging conditions
Aging processes like UV irradiation and physical abrasion alter microplastic surface properties, increasing their capacity to adsorb environmental pollutants while also enhancing leaching of toxic additives like phthalates, collectively amplifying the environmental toxicity of weathered microplastics.
Change in adsorption behavior of aquatic humic substances on microplastic through biotic and abiotic aging processes
Researchers found that both UV irradiation and microbial aging of polyethylene microplastics significantly altered their surface chemistry, changing how aquatic humic substances adsorb onto the plastic surface and highlighting the importance of weathering state in assessing microplastic-contaminant interactions.
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.
Sorption behaviors of petroleum on micro-sized polyethylene aging for different time in seawater
Researchers found that aging of polyethylene microplastics in seawater over 180 days progressively increased petroleum adsorption capacity, with surface oxidation and roughening from weathering creating more binding sites for hydrocarbon contaminants.
Sorption of benzo(a)pyrene and of a complex mixture of petrogenic polycyclic aromatic hydrocarbons onto polystyrene microplastics
Researchers investigated the sorption of benzo(a)pyrene and a complex mixture of petrogenic polycyclic aromatic hydrocarbons onto polystyrene microplastics in aquatic systems, quantifying how the hydrophobic nature and large surface area of microplastics facilitate PAH accumulation and potential vector transport.
Microplastic-water partitioning of two states halogenated PAHs: Solute and sol
This study examined how halogenated polycyclic aromatic hydrocarbons (PAHs) partition between microplastics and water, finding that plastic type and contaminant chemistry both influence sorption behavior. Understanding how microplastics absorb and transport toxic chemicals is important for assessing the ecological risks they pose.
Transport of persistent organic pollutants: Another effect of microplastic pollution?
This review examines how microplastics act as vectors for persistent organic pollutants (POPs) in aquatic environments, covering the physical and chemical factors governing pollutant adsorption and desorption. The authors discuss how interactions between microplastics and POPs vary with polymer type, particle properties, and environmental conditions, and when these interactions may result in toxic effects on aquatic organisms.
Sorption of polycyclic aromatic hydrocarbons by microplastic films: Characterizing kinetics, isotherms, and impacts of sludge exposure
This study characterized the sorption of polycyclic aromatic hydrocarbons onto microplastic films in sludge and wastewater systems, finding that MP type and surface properties strongly influence PAH binding capacity and may facilitate PAH transport and bioavailability in contaminated environments.
Effect of sunlight aging on physicochemical properties and sorption capacities of environmental microplastics: implications for contamination by PAHs
Researchers studied how sunlight aging changes the physical and chemical properties of three common plastics -- polyethylene, polypropylene, and polystyrene -- and their ability to absorb pollutants. They found that plastics exposed to outdoor sunlight for 69 days absorbed up to 3.5 times more of the carcinogenic compound pyrene compared to new plastics, likely due to surface changes from weathering. The findings suggest that older, weathered microplastics in the environment may accumulate harmful pollutants more readily than fresh plastic particles.
Effects of Weathering on Microplastic Dispersibility and Pollutant Uptake Capacity
This study examined how environmental weathering changes the surface properties of microplastics and their ability to absorb co-pollutants, finding that weathered MPs bind more contaminants than pristine particles due to surface oxidation and cracking. The results emphasize that the environmental fate and toxicity of microplastics change dynamically as they age in the environment.