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20 resultsShowing papers similar to Insight into the characteristics and sorption behaviors of aged polystyrene microplastics through three type of accelerated oxidation processes
ClearAging mechanism of microplastics with UV irradiation and its effects on the adsorption of heavy metals
Researchers aged polystyrene microplastics using UV irradiation under three conditions (air, pure water, seawater) and found that aging changed surface chemistry and increased the microplastics' capacity to adsorb heavy metals, with seawater aging producing the most pronounced surface oxidation.
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 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.
Effect of ozonation on the morphological characteristics and adsorption behavior of polystyrene microplastics in aqueous environments
Researchers exposed polystyrene microplastics to ozone treatment and found that the aging process made the particles smaller, more negatively charged, and better at absorbing pollutants from water — meaning weathered microplastics in the environment may carry more harmful chemicals than fresh ones.
Adsorption/desorption behavior of degradable polylactic acid microplastics on bisphenol A under different aging conditions
Researchers studied how different types of UV-simulated aging affect the ability of polylactic acid microplastics to adsorb and release bisphenol A. The study found that aging conditions changed the surface properties of the biodegradable plastic, altering its interaction with this common environmental contaminant. The findings suggest that even biodegradable microplastics can act as carriers of harmful chemicals depending on their degradation state.
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.
UV-B radiation aging changed the environmental behavior of polystyrene micro-/nanoplastics-adsorption kinetics of BDE-47, plankton toxicities and joint toxicities with BDE-47
Researchers examined how UV-B radiation aging changes the behavior and toxicity of polystyrene micro- and nanoplastics in marine environments. They found that 30 days of UV-B aging increased the surface roughness, hydrophobicity, and pollutant adsorption capacity of the particles, while also increasing their individual toxicity to marine plankton. The study suggests that environmentally aged microplastics may pose different and potentially greater ecological risks than pristine particles.
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.
Surface characteristics and adsorption properties of polypropylene microplastics by ultraviolet irradiation and natural aging
This study examined how aging and UV light change the surface properties of polypropylene microplastics and their ability to absorb other pollutants. UV-aged microplastics absorbed significantly more of a common dye pollutant, while naturally aged particles absorbed less due to biological film buildup. Understanding how microplastics change over time in the environment matters because aged particles may carry different levels of harmful chemicals than fresh ones.
An investigation into the effect of UV irradiation and biofilm colonization on adsorption and desorption behavior of polyurethane (PU) microplastics for bisphenol A (BPA)
Researchers investigated how UV light exposure and biofilm growth on polyurethane microplastics affect their ability to absorb and release bisphenol A, an endocrine-disrupting chemical. They found that UV aging increased the microplastics' capacity to absorb BPA, while biofilm colonization reduced it. The study suggests that the environmental history of microplastics significantly influences their role as carriers of harmful pollutants.
Investigation of Surface Alteration of Microplastics by Using UV Irradiation
UV radiation causes polystyrene and other plastic microparticles to undergo photooxidative degradation, changing their surface chemistry and potentially making them more likely to adsorb or release chemical pollutants. Understanding these weathering processes is important for predicting the environmental behavior and toxicity of microplastics.
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 the Sorption Behavior and Toxicity of Polystyrene Microplastics in Multi-solute Systems
UV-irradiated and microbially degraded polystyrene microplastics showed altered sorption behavior for 4-methylbenzylidene camphor in multi-solute systems — with weathered MPs forming solute multilayers differently than pristine PS — highlighting how environmental aging changes the contaminant-carrying capacity of plastic particles.
A Comparison of the Adsorption Behavior of Bisphenol A by Microplastics From Different Sources
Lab experiments showed that UV weathering of four common microplastic types — PVC, polypropylene, polyethylene, and polyolefin resin — consistently increased their ability to adsorb the endocrine-disrupting chemical bisphenol A (BPA) by up to 19%, and in some cases changed the fundamental mechanism of adsorption. Acidic conditions and warmer temperatures amplified uptake, while higher plastic doses diluted it. Since weathered microplastics are what actually exist in the environment, these results suggest that aged particles are more potent BPA carriers than fresh plastic, worsening hormonal disruption risks in aquatic ecosystems.
Adsorption of levofloxacin by ultraviolet aging microplastics
Researchers studied how ultraviolet aging changes the ability of common microplastics to adsorb the antibiotic levofloxacin. The study found that UV-aged polystyrene, polyamide, and polyethylene microplastics all showed significantly enhanced adsorption capacity compared to their unaged counterparts, suggesting that weathered microplastics in the environment may carry higher pollutant loads.
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.
Aging Process of Microplastics in the Environment
This review examines how natural environmental processes — UV radiation, physical abrasion, chemical reactions, and biodegradation — alter the surface, shape, and chemistry of microplastics over time, and how these changes affect their ability to absorb and transport other pollutants. Understanding microplastic aging is critical because weathered particles behave differently than fresh plastic, often becoming more hazardous as pollutant carriers in ecosystems.
[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.
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.
Characteristics and behaviors of microplastics undergoing photoaging and Advanced Oxidation Processes (AOPs) initiated aging
This review examines how microplastics change as they age in the environment through sunlight exposure and chemical processes. Aging alters the surface properties of microplastics, making them better at absorbing toxic chemicals and heavy metals from the surrounding environment. Since nearly all microplastics found in nature have undergone some degree of aging, understanding these changes is essential for accurately assessing how dangerous real-world microplastic pollution is to human health.