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61,005 resultsShowing papers similar to Mechanistic interpretation of the sorption of terbuthylazine pesticide onto aged microplastics
ClearMechanistic interpretation of the sorption of terbuthylazine pesticide onto aged microplastics
Researchers investigated how accelerated weathering — using UV irradiation, hydrogen peroxide, and ultrasonic treatment — alters the surface properties of polyethylene microplastics and affects their sorption of the herbicide terbuthylazine. Aged polyethylene particles showed measurably different sorption kinetics and capacities compared to pristine particles, providing mechanistic insight into how environmental aging changes microplastic interactions with organic pollutants like pesticides.
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.
The role of microplastic aging on chlorpyrifos adsorption-desorption and microplastic bioconcentration
Researchers investigated how microplastic aging affects chlorpyrifos adsorption-desorption behavior, finding that aged microplastics had higher pesticide sorption capacity and bioconcentration potential, suggesting weathered MPs pose greater risks as pollutant carriers.
Adsorption behavior of triazine pesticides on polystyrene microplastics aging with different processes in natural environment
Researchers found that microplastics that have aged in the environment absorb pesticides more effectively and quickly than fresh microplastics, and the pesticide-loaded particles are more toxic to bacteria. This means that as microplastics weather outdoors, they become better carriers for agricultural chemicals, potentially increasing the combined health risks when these contaminated particles enter food or water supplies.
Photoaging of polyethylene microplastic and its effect on the chlorpyrifos adsorption
This study examined how UV-B radiation ages polyethylene microplastics over time and how that aging changes their ability to adsorb the pesticide chlorpyrifos. Photoaging modified the surface chemistry and structure of the plastic, altering its interaction with the pesticide, suggesting that weathered microplastics in aquatic environments may carry different — and potentially higher — loads of toxic chemicals than fresh particles. This "Trojan horse" effect is important for understanding how microplastics contribute to broader chemical contamination of waterways.
Laboratory Studies about Microplastic Aging and Its Effects on the Adsorption of Chlorpyrifos
Researchers simulated the aging of six types of microplastics in freshwater and seawater to study how weathering affects their ability to adsorb the pesticide chlorpyrifos. The study found that UV-driven aging caused surface cracks, pores, and chemical changes in the microplastics, and the aging process increased their capacity to adsorb chlorpyrifos, suggesting that weathered microplastics in the environment may carry higher concentrations of pesticide pollutants.
Photoaging effects on polyethylene microplastics: Structural changes and chlorpyrifos adsorption
Researchers studied how UVB-induced photoaging changes the properties of polyethylene microplastics and their ability to absorb the pesticide chlorpyrifos. They found that aged microplastics absorbed nearly 18% more pesticide than pristine ones, due to the formation of oxygen-containing surface groups, increased surface roughness, and reduced crystallinity. The findings suggest that weathered microplastics in the environment may pose greater risks as carriers of harmful pesticides.
Adsorption behaviors of atrazine and imidacloprid on high temperature aged microplastics: Mechanism and influencing factors
Researchers investigated how aged polyethylene microplastics — the kind that have been weathered by UV light and heat in the environment — adsorb common agricultural pesticides, finding that microplastics can accumulate pesticides like atrazine and imidacloprid at high concentrations through hydrophobic (water-avoiding) interactions. This "Trojan horse" effect means microplastics can carry and potentially concentrate pesticides as they move through water environments.
A comparative study on the adsorption behavior of pesticides by pristine and aged microplastics from agricultural polyethylene soil films
Researchers compared how pristine and aged agricultural polyethylene film microplastics adsorb pesticides. They found that aged films, which develop rougher surfaces, more cracks, and oxygen-containing chemical groups, adsorb pesticides more readily than pristine ones. The study suggests that weathered agricultural microplastics in soil may act as carriers for pesticide contamination, potentially increasing environmental and human health risks.
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.
Adsorption of Alachlor, Lindane, And Methomyl onto Polystyrene Microplastics: Effects of Aging Treatments
Researchers studied how laboratory aging treatments affect the ability of polystyrene microplastics to absorb three common pesticides. They found that UV-aged and chemically oxidized microplastics adsorbed significantly more pesticides than unaged particles due to increased surface area and chemical changes. The findings indicate that weathered microplastics in the environment may act as more potent carriers of agricultural chemicals.
The role of gamma-irradiated microplastics in terbuthylazine sorption and desorption processes in contaminated soils
Researchers investigated how gamma-irradiated polyethylene microplastics influence the sorption and desorption of the herbicide terbuthylazine in contaminated agricultural soils. The study found that irradiation-induced aging of microplastics altered their surface properties in ways that affected herbicide binding and release dynamics, with implications for pesticide fate in plastic-contaminated soils.
Interaction of Microplastics with Emerging Organic Pollutants: A Study on Atrazine Adsorption and Phytotoxicity
Researchers studied how aged and pristine polyethylene microplastics adsorb the herbicide atrazine and whether this combination affects plant seed germination. Aged microplastics absorbed significantly more atrazine than new ones due to surface changes from UV exposure, and the atrazine-loaded aged particles inhibited lettuce germination by up to 34%. The findings suggest that weathered microplastics in agricultural environments may amplify the harmful effects of pesticide contamination.
Impact of UV-B Photoaging on Chlorpyrifos Adsorption by PET Microplastics: Insights from Experimental and DFT Analysis
Researchers studied how UV-B light aging changes the ability of PET microplastics to absorb the pesticide chlorpyrifos, combining laboratory experiments with computational modeling. They found that aging created new surface functional groups on the microplastics that significantly increased their capacity to bind the pesticide. The findings suggest that weathered microplastics in the environment may carry higher loads of harmful chemicals than fresh plastic particles.
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.
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.
The influence of polyethylene microplastics on pesticide residue and degradation in the aquatic environment
Polyethylene microplastics significantly prolonged the degradation half-lives of pesticides in water, particularly those with moderate initial degradation rates, by adsorbing the chemicals and slowing their breakdown. For the pesticide terbuthylazine, the half-life increased from 32 to 45 days in the presence of microplastics, with implications for how long agricultural chemicals persist after microplastics carry them into water bodies.
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.
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.
Atrazine sorption on biodegradable microplastics: Significance of microbial aging
Researchers found that soil microbial aging of biodegradable microplastics — polylactic acid (PLA) and PBAT — significantly alters their surface properties and increases their capacity to adsorb the herbicide atrazine, suggesting that biodegradable plastics may pose underappreciated pollutant-transport risks as they break down.
The sorption behavior of triclosan on microplastics: aging effects and mechanisms
Researchers investigated how environmental aging processes change the ability of polyethylene, polypropylene, and polystyrene microplastics to absorb the antimicrobial compound triclosan. They found that aging increased sorption capacity for polyethylene but decreased it for polypropylene, with polystyrene showing mixed results depending on the aging method. The changes were driven by modifications to surface chemistry, particularly the introduction of oxygen-containing functional groups that alter hydrophobic and electrostatic interactions.
Polypropylene microplastics aging under natural conditions in winter and summer and its effects on the sorption and desorption of nonylphenol
Researchers found that naturally aged polypropylene microplastics, especially those weathered in summer, showed significantly enhanced sorption capacity for the pollutant nonylphenol compared to pristine microplastics, due to surface property changes from environmental aging.
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.
Interactions between microplastics and contaminants: A review focusing on the effect of aging process
This review explains how aging and weathering change microplastics in ways that make them interact differently with environmental pollutants like heavy metals and pesticides. Aged microplastics tend to absorb more contaminants than fresh ones, and they can also release those pollutants under certain conditions. This is important for human health because the microplastics we encounter in food and water are typically weathered, meaning they may carry higher loads of toxic substances than laboratory studies suggest.