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61,005 resultsShowing papers similar to An investigation into the effect of UV irradiation and biofilm colonization on adsorption and desorption behavior of polyurethane (PU) microplastics for bisphenol A (BPA)
ClearBisphenol A sorption on commercial polyvinyl chloride microplastics: Effects of UV-aging, biofilm colonization and additives on plastic behaviour in the environment.
Researchers studied how UV aging and biofilm growth affect the ability of commercial PVC microplastics to adsorb and release bisphenol A, an endocrine-disrupting chemical. The study found that UV exposure and biofilm colonization generally increased adsorption capacity, but the effect varied depending on the plastic's additive composition, suggesting that commercial additives play an underappreciated role in how microplastics transport pollutants in the environment.
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/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.
Insight into the characteristics and sorption behaviors of aged polystyrene microplastics through three type of accelerated oxidation processes
Researchers studied how three different UV-based oxidation processes age polystyrene microplastics and how that aging affects the particles' ability to absorb the chemical bisphenol A. They found that aging significantly increased the surface oxidation and water-attracting properties of the microplastics, altering their pollutant-sorbing behavior. The findings suggest that weathered microplastics in the environment may interact with chemical contaminants differently than fresh ones.
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.
Sorption and leaching behaviors between aged MPs and BPA in water: The role of BPA binding modes within plastic matrix
Researchers compared how UV-oxidation aging affects microplastic structure and BPA sorption in LDPE (where BPA is an additive) versus polycarbonate (where BPA is a monomer), finding that aged LDPE showed stronger BPA re-adsorption while aged PC leached more BPA monomer.
Effects of biofilm formation on triclosan adsorption by UV-aged and pristine polystyrene microplastics in aquatic environments
Researchers investigated how biofilm formation on UV-aged versus pristine polystyrene microplastics affected triclosan adsorption, finding that biofilm-colonized aged microplastics had altered surface properties that changed triclosan uptake compared to unaged particles.
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.
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.
[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.
Effects of biofilm on metal adsorption behavior and microbial community of microplastics
Researchers found that biofilm development on polystyrene microplastics enhanced their ability to adsorb copper and lead more than UV aging alone, with biofilm altering both the adsorption mechanisms and microbial community composition on the plastic surfaces.
The characteristics of dissolved organic matter release from UV-aged microplastics and its cytotoxicity on human colonic adenocarcinoma cells
Researchers investigated how UV-aged polyurethane microplastics release dissolved organic matter and its toxic effects on human colon cells. They found that the concentration of released organic matter increases with longer aging time, and its cytotoxicity also increases accordingly, with air-aged microplastics releasing more than water-aged ones. The study suggests that weathered microplastics may pose growing health concerns as they release increasing amounts of potentially harmful organic compounds over time.
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.
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.
The Effects of Pristine and Aged Microplastics on Biofilm Formation and Antibiotic Production
Researchers examined how pristine versus UV-light-aged polypropylene microplastics differentially affect biofilm formation and antibiotic production in microorganisms using a 96-well microplate assay, finding that surface aging alters the microbial colonization dynamics on microplastic surfaces. The study highlights the role of environmental weathering in changing how microplastics interact with microbial communities, with implications for the spread of antimicrobial resistance.
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 as potential bisphenol carriers: role of adsorbents, adsorbates, and environmental factors
Laboratory experiments showed that four common microplastic types — polystyrene, polypropylene, polyamide, and PVC — all readily adsorb bisphenols (BPA, BPB, BPF, BPS), with polyamide showing the highest capacity. Adsorption was strongly influenced by polymer surface chemistry, bisphenol hydrophobicity, temperature, and salinity. Because bisphenols are potent endocrine disruptors, microplastics acting as their environmental carriers could amplify human and wildlife exposure through contaminated seafood and drinking water.
Aging 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.
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.
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 behaviors of microplastics from packaging materials subjected to ultraviolet irradiation and microbial colonization
Researchers studied how UV irradiation and microbial colonization alter the surface properties of microplastics from discarded packaging materials and their ability to adsorb pollutants. They found that aging processes changed surface chemistry and hydrophilicity, affecting how microplastics interact with contaminants like crystal violet dye through hydrogen bonding, electrostatic attraction, and hydrophobic interactions.
UV and chemical aging alter the adsorption behavior of microplastics for tetracycline
Researchers found that UV and chemical aging significantly increased microplastics' capacity to adsorb tetracycline, with biodegradable PBAT showing more dramatic changes in surface properties and adsorption behavior compared to conventional plastics like polystyrene and polyethylene.
The fate, impacts and potential risks of photoaging process of the microplastics in the aqueous environment
This review examines how ultraviolet light from sunlight causes microplastics in water to age and change their physical and chemical properties, including surface texture, chemical structure, and water-repelling ability. Researchers found that photoaged microplastics become better at carrying other pollutants and may pose greater environmental risks than fresh plastics. The study highlights that aged microplastics can also increase biological toxicity and human exposure risks compared to their original form.