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61,005 resultsShowing papers similar to The effect of polymer aging on the uptake of fuel aromatics and ethers by microplastics
ClearAdsorption of some hazardous aromatic hydrocarbons by various pristine and heat-activated aged microplastics as potential pollutant carriers in aquatic environment
Researchers examined how pristine and heat-aged microplastics of four polymer types adsorb hazardous aromatic hydrocarbons, finding that aging significantly altered adsorption capacity. The results demonstrate that weathered microplastics may act as more effective pollutant vectors than pristine particles in aquatic environments.
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.
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.
Aging of microplastics increases their adsorption affinity towards organic contaminants
Researchers found that microplastics that have been weathered by sunlight and environmental exposure absorb significantly more chemical pollutants than fresh microplastics, with up to a 4.7-fold increase in adsorption. Ultraviolet exposure changes the surface chemistry of the plastics, making them stickier for contaminants. This matters because most microplastics in nature are weathered, meaning they may be carrying more toxic chemicals into the food chain than laboratory studies using new plastics would suggest.
Microplastics and organic contaminants: Investigation of the sorption process on different polymer types
Researchers investigated sorption of organic contaminants onto microplastics collected from environmental samples, finding that real-world MPs had different sorption capacities than laboratory-prepared particles due to surface aging, biofouling, and co-sorption of natural organic matter.
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.
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.
Can aged microplastics be transport vectors for organic micropollutants? – Sorption and phytotoxicity tests
This study examined whether aged microplastics can act as transport carriers for organic micropollutants in the environment. Researchers found that aging processes like UV weathering altered the surface properties of microplastics, affecting their ability to sorb pollutants and influence phytotoxicity in plants.
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.
[Sorption of Polybrominated Diphenyl Ethers by Virgin and Aged Microplastics].
This study examined how environmental aging under UV light changes the ability of polyethylene and polystyrene microplastics to adsorb polybrominated diphenyl ethers (PBDEs), common flame retardant chemicals. Aged microplastics showed altered sorption capacity compared to virgin particles, affecting how these toxic chemicals are transported in aquatic environments.
Synergistic Adsorption of Organic Pollutants on Weathered Polyethylene Microplastics
Researchers studied how environmental weathering changes the ability of polyethylene microplastics to adsorb organic pollutants like triclosan and methylparaben. The study found that weathered and oxidatively degradable polyethylene adsorbed significantly more pollutants than virgin plastic, suggesting that aged microplastics in the environment may pose a greater risk as carriers of toxic chemicals.
Influence of aging on the affinity between microplastics and organic contaminants
Researchers investigated how UV and UV+H2O2 aging affects the capacity of polystyrene microplastics to adsorb and release pesticides and other organic contaminants, finding that aging-induced surface changes significantly altered adsorption affinity and desorption behavior compared to unaged controls.
Adsorption behaviors of chlorpyrifos on UV aged microplastics
Researchers investigated how UV aging affects the adsorption of the pesticide chlorpyrifos on biodegradable and non-degradable microplastics, finding that UV irradiation significantly modified plastic surfaces and enhanced their capacity to carry organic pollutants.
Data on sorption of organic compounds by aged polystyrene microplastic particles
This data article reports the sorption behavior of 21 different chemicals by UV-aged polystyrene microplastics, providing a useful dataset for modeling chemical uptake by weathered plastic in the environment. Aged plastics often absorb more pollutants than fresh plastics, making environmental aging an important factor in assessing microplastic risk.
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.
Effect of Polymer Aging on Uptake/Release Kinetics of Metal Ions and Organic Molecules by Micro- and Nanoplastics: Implications for the Bioavailability of the Associated Compounds
Researchers developed a theoretical framework to describe how aging and degradation of plastic particles in the environment changes their ability to absorb and release metals and organic contaminants. They found that as plastics weather and break down, their capacity to pick up and later release pollutants increases significantly. The study suggests that the age and condition of microplastics are important factors in determining how much contamination they carry and deliver to living organisms.
Assessing the effects of polyethylene microplastic aging on the sorption of pyrene via simulated sunlight irradiation
Researchers aged high-density polyethylene microplastics under simulated sunlight and measured pyrene sorption before and after, finding that aging enhanced sorption capacity in proportion to irradiation time. The physical changes including surface cracking and increased roughness were the main mechanism, as destructive chemical oxidation was not observed.
UV aging induces colloidal-like behavior in microplastics, mediating contaminant fluxes across interfaces
Researchers showed that UV aging and mechanical stress transform polyethylene microplastics into reactive porous particles with colloidal behavior, developing surface oxidation, increased roughness, and trace metal accumulation — changes that alter how they transport contaminants across water-sediment interfaces.
The sorption behaviour of amine micropollutants on polyethylene microplastics – impact of aging and interactions with green seaweed
Researchers studied how long-term aging of polyethylene microplastics changes their ability to bind organic pollutants (amine micropollutants), and how interactions with green seaweed affect this process. Aged microplastics showed different sorption behavior than fresh ones, which has implications for how effectively they transport contaminants through aquatic food webs.
Polymer aging affects the bioavailability of microplastics-associated contaminants in sea urchin embryos
Researchers found that UV aging of microplastics alters the bioavailability of co-contaminants like flame retardants and metals to sea urchin embryos, with combined exposures generating transcriptional responses distinct from single-contaminant effects.
Microplastic Properties Govern the Photodegradation of Sorbed Anthracene in Aquatic Environments
Researchers found that microplastic properties — including polymer type, surface chemistry, and aging state — govern the rate and pathway of solar photodegradation of sorbed anthracene in aquatic environments, with sorption to microplastics altering contaminant photochemical fate compared to free solution.
Contaminant release from aged microplastic
Researchers exposed recycled plastic granules of polyethylene, PVC, and polystyrene to simulated aging conditions including UV radiation and high temperatures. They found that aging significantly increased the rate at which chemical additives leached from the plastic particles into water, with UV exposure having the greatest effect. The study highlights that weathered microplastics in the environment may release harmful chemicals at much higher rates than fresh plastic materials.
Weathering effect triggers the sorption enhancement of microplastics against oxybenzone
Researchers found that weathering in air, seawater, and freshwater makes PET microplastics absorb significantly more oxybenzone, a common sunscreen chemical, than fresh plastic does. Aging creates surface cracks and new chemical groups that increase the plastic's ability to bind pollutants. The study suggests that as microplastics weather in the environment, they become more effective carriers of harmful chemicals.
Accelerated aging of polyvinyl chloride microplastics by UV irradiation: Aging characteristics, filtrate analysis, and adsorption behavior
Researchers systematically investigated how UV irradiation ages polyvinyl chloride microplastics, characterizing changes in their physical and chemical properties and the organic matter they release. The study established quantitative relationships between the degree of aging and the capacity of microplastics to adsorb environmental pollutants like malachite green and sulfamethoxazole, providing a tool for predicting contaminant accumulation on weathered microplastics in natural environments.