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61,005 resultsShowing papers similar to UV aging and soil organic matter co-regulate the adsorption of organophosphate flame retardants on PVC and PS: Kinetics and mechanisms
ClearAdsorption 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.
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.
[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.
Soil health risks caused by interactions of microplastics and pesticides
Chlorpyrifos adsorption and desorption on pristine and UV-aged LDPE and biodegradable microplastics derived from plastic mulch films was investigated in laboratory experiments, along with bioconcentration in earthworms. Aging altered the adsorption-desorption behavior of both plastic types and affected pesticide bioavailability to earthworms, highlighting risks from pesticide-microplastic interactions in agricultural soils.
Adsorption behaviors and bioavailability of tetrabromobisphenol A in the presence of polystyrene microplastic in soil: Effect of microplastics aging
Researchers studied how aging changes the ability of polystyrene microplastics to absorb and release a flame retardant chemical called TBBPA in soil. They found that aged microplastics had a greater capacity to adsorb the chemical but also released it more readily, increasing the bioavailability of this toxic compound to soil organisms. The study reveals that as microplastics weather in the environment, they may actually become more effective carriers of harmful chemicals into the food chain.
Deciphering the role of nonylphenol adsorption in soil by microplastics with different polarities and ageing processes
Photochemical and soil-based aging of polypropylene and polyamide microplastics both promoted formation of C-O and carbonyl groups, enhancing nonylphenol adsorption in soil by up to severalfold, with implications for co-transport of this endocrine-disrupting chemical.
Effects of polymer aging on sorption of 2,2′,4,4′-tetrabromodiphenyl ether by polystyrene microplastics
Researchers investigated how different aging processes — seawater soaking, UV irradiation, and their combination — affect the sorption of the brominated flame retardant BDE-47 onto polystyrene microplastics, finding that aging altered sorption capacity and that environmental factors including salinity, pH, and dissolved organic matter further modulated contaminant uptake.
Insights into the characteristics, adsorption and desorption behaviors of microplastics aged with or without fulvic acid
Researchers investigated how fulvic acid, a key component of dissolved organic matter, influences the aging, adsorption, and desorption behavior of microplastics under UV radiation, finding that water environmental factors significantly alter the surface properties and contaminant-binding capacity of aged microplastics.
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 behavior and mechanism of hydrophilic organic chemicals to virgin and aged microplastics in freshwater and seawater
UV-accelerated aging of polystyrene and PVC microplastics increased surface oxidation and introduced microcracks, and aged MPs showed significantly increased adsorption of the hydrophilic antibiotic ciprofloxacin compared to virgin MPs. The findings demonstrate that even hydrophilic organic chemicals can accumulate on aged microplastics, expanding the range of compounds that microplastics may carry and deliver to organisms.
Microplastics mulch film affects the environmental behavior of adsorption and degradation of pesticide residues in soil
Researchers tested how new, aged, and biodegradable polyethylene mulch film microplastics affect the adsorption and degradation of the pesticides imidacloprid and flumioxazin in soil. All three MP types slowed initial pesticide adsorption and extended the time to reach equilibrium, with aged MPs showing the greatest effect, potentially prolonging pesticide persistence in agricultural soils.
Adsorption of microplastic-derived organic matter onto minerals
Dissolved organic matter (DOM) released from weathered microplastics was studied for its adsorption onto soil minerals, a process relevant to microplastic fate and potential contaminant transport. Microplastic-derived DOM adsorbed onto mineral surfaces, altering soil chemistry and potentially stabilizing or mobilizing other contaminants in soil-water systems.
Effect of PVC microplastics on pesticide sorption behavior in soil: Key roles of particle size and aging
Researchers studied how PVC microplastics of different sizes and aging states affect pesticide behavior in agricultural soil. They found that smaller and aged microplastics significantly enhanced pesticide adsorption and made it harder to release back into the soil, primarily through hydrogen bonding mechanisms. The study highlights the need to account for microplastic contamination when assessing how pesticides move through and persist in agricultural soils.
Influencing Mechanisms of Exogenous and Endogenous Dissolved Organic Matter on the Adsorption of Tetracycline on UV ‐Light Aged Microplastics
Researchers investigated how humic acid and microplastic-derived dissolved organic matter (MP-DOM) influence tetracycline adsorption onto UV-aged polyethylene and polystyrene microplastics, finding that UV aging increased surface area and functional groups on the plastics while dissolved organic matter altered adsorption capacity through competitive and facilitative mechanisms.
Investigating the impact of microplastics on triphenyl phosphate adsorption in soil: Insights into environmental factors and soil properties
This study examined how microplastics in soil affect the behavior of triphenyl phosphate, a common flame retardant chemical. Environmental conditions like UV light and soil acidity changed how much of the chemical stuck to the microplastics, altering its movement through soil. The findings matter because microplastics can act as carriers for toxic chemicals in agricultural soil, potentially moving them into groundwater or crops that people consume.
Transport, transformation, and ecological impacts of brominated flame retardants in soils: A comprehensive review
This review examines how brominated flame retardants, common chemicals added to consumer products, behave in soils and affect soil organisms. Researchers found that soil organic matter largely controls how these chemicals move and transform, with UV light driving breakdown at the surface and microbial activity dominating deeper in the soil. The study highlights the need for integrated remediation strategies that address these persistent pollutants alongside co-contaminants like microplastics and heavy metals.
Microplastics lag the leaching of phenanthrene in soil and reduce its bioavailability to wheat
Researchers found that polystyrene, polyethylene, and PVC microplastics delayed the downward leaching of phenanthrene through soil by adsorbing the contaminant, reducing its bioavailability to wheat, with adsorption capacity following the order PS > PE > PVC.
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.
Changes in the spectroscopic response of soil organic matters by PBAT microplastics regulated the Cd adsorption behaviors in different soils
Researchers conducted a 60-day incubation experiment using PBAT microplastics at different sizes and doses in farmland and woodland soils to examine how MPs alter dissolved organic matter (DOM) and cadmium adsorption behavior. PBAT modified DOM composition and fluorescence properties in soil-type-dependent ways, and these DOM changes in turn regulated how much cadmium the soils could adsorb.
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.
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.
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.
HOCs bioavailability response to soil aging: Focusing on the indirect effects of aging conditions, environmental factors, and carrier-mediated changes in soil properties - A review
This review summarizes the occurrence of hydrophobic organic contaminants (HOCs) in global soils and their aging mechanisms, focusing on how soil aging conditions, environmental factors, and plastic-carrier interactions indirectly alter soil properties to modulate HOC bioavailability over time.
Total organic carbon content as an index to estimate the sorption capacity of micro- and nano-plastics for hydrophobic organic contaminants.
This study investigated whether total organic carbon content could serve as a simple index to predict how strongly micro- and nanoplastics adsorb environmental contaminants, testing chlorobenzene, naphthalene, and phenanthrene on ten plastic types before and after UV aging. The results show that organic carbon content is a reliable predictor of sorption capacity, which could simplify risk assessments for plastic-associated chemical contamination.