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61,005 resultsShowing papers similar to Studies on competitive adsorption characteristics of bisphenol A and 17α-ethinylestradiol on thermoplastic polyurethane by site energy distribution theory
ClearSorption kinetics, isotherms and molecular dynamics simulation of 17β-estradiol onto microplastics
Researchers investigated the adsorption of the endocrine disruptor 17-beta-estradiol onto three common microplastics using kinetic experiments and molecular dynamics simulations, finding that hydrophobic interactions drive sorption and that polymer type significantly influences adsorption capacity.
[Sorption Characteristics and Site Energy Distribution Theory of Typical Estrogens on Microplastics].
This study examined how polyethylene microplastics adsorb six types of estrogens — hormones that can disrupt reproduction and development in animals and humans. Researchers found that PE microplastics readily bind multiple estrogens, with adsorption behavior depending on estrogen structure and water chemistry. These findings confirm that microplastics can act as carriers for hormone-disrupting chemicals in the environment.
Sorption and bioacessibility of 17β-Estradiol on Environmental Microplastics: Particle Size, Aging, Competitive Interactions and Co-exposure
This study investigated the sorption of the hormone 17β-estradiol onto polyethylene terephthalate and polyethylene microplastics, examining how particle size and aging affect sorption capacity and co-exposure toxicity. Smaller and aged MPs showed higher estrogen sorption, increasing the potential for MPs to act as vectors for hormonal contaminants in aquatic environments.
Hydrophobic sorption behaviors of 17β-Estradiol on environmental microplastics
Researchers studied the sorption behavior of the estrogen 17beta-estradiol onto five types of microplastics in marine water, finding hydrophobic interactions dominated and that microplastics could serve as vectors concentrating this endocrine disruptor.
Adsorption and Desorption of Steroid Hormones by Microplastics in Seawater
Researchers evaluated the adsorption and desorption of the steroid hormones 17β-estradiol (E2) and 17α-ethynylestradiol (EE2) onto microplastics in seawater, finding that polymer type, particle size, salinity, pH, and humic acid concentration all influenced sorption behavior. The study provides mechanistic data relevant to assessing microplastics as vectors for endocrine-disrupting compounds in marine environments.
Sorption of endocrine disrupting compounds onto polyamide microplastics under different environmental conditions: Behaviour and mechanism
Polyamide microplastics sorbed the synthetic estrogens EE2, E2, and estriol with affinity influenced by pH, ionic strength, and temperature, with sorption capacity decreasing under alkaline conditions that mimic some aquatic environments, suggesting that water chemistry governs how effectively polyamide MPs concentrate endocrine-disrupting compounds.
Mechanistic insights into the adsorption of endocrine disruptors onto polystyrene microplastics in water
Researchers studied the mechanisms by which polystyrene microplastics adsorb endocrine-disrupting compounds from aquatic environments, finding that hydrophobic interactions and surface chemistry govern the binding. The results clarify how microplastics act as vectors for co-transporting endocrine disruptors through aquatic ecosystems.
Interfacial sorption of 17β-E2 on nano-microplastics: Effects of particle size, functional groups and hydrochemical conditions
This study examined how nanoscale polystyrene particles — a form of nanoplastic — bind to 17β-estradiol, a natural estrogen that is also an emerging environmental contaminant. Smaller particles adsorbed more of the hormone due to their larger surface area, and surface chemistry played a key role: hydrophobic (water-repelling) surfaces bound more estrogen than particles modified with polar chemical groups. The findings suggest that nanoplastics in water bodies could act as vectors, concentrating and transporting hormones to fish and other aquatic life, potentially amplifying endocrine disruption.
Influence of microplastics occurrence on the adsorption of 17β-estradiol in soil
Researchers investigated how the presence of microplastics in soil affects the adsorption behavior of the hormone 17-beta-estradiol. The study found that common greenhouse soil microplastics including polyethylene, polyvinyl chloride, and polystyrene influenced how estrogen compounds bind to soil, suggesting that microplastic contamination may alter the environmental fate of hormonal pollutants.
Potential Adsorption Affinity of Estrogens on LDPE and PET Microplastics Exposed to Wastewater Treatment Plant Effluents
Researchers investigated whether LDPE and PET microplastics recovered from wastewater treatment plant effluents can adsorb estrogen compounds, finding that these common plastic types bind endocrine-disrupting estrogens and may transport them through aquatic ecosystems.
Sorption of alkylphenols and estrogens on microplastics in marine conditions
Researchers investigated the sorption of six endocrine-disrupting chemicals — including alkylphenols and estrogens — onto microplastics under marine conditions, supporting the hypothesis that microplastics act as a secondary contamination vector for aquatic organisms by concentrating pollutants.
Interactions between microplastics and phthalate esters as affected by microplastics characteristics and solution chemistry
The sorption of two phthalate esters onto polystyrene, polyethylene, and polypropylene microplastics was studied under varying conditions, finding that sorption was influenced by polymer type, phthalate structure, temperature, salinity, and dissolved organic matter. The results provide mechanistic insight into how microplastics accumulate endocrine-disrupting phthalates from the environment.
Competitive sorption of persistent organic pollutants onto microplastics in the marine environment
This study tested whether phenanthrene and DDT compete with each other for sorption sites on PVC microplastics when present as a mixture in seawater, and found that competition reduced sorption of each compound compared to when tested alone. The finding has implications for predicting how microplastics transport chemical mixtures in the ocean, which is more realistic than single-compound tests.
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.
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.
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.
Phthalate acid ester release from microplastics in water environment and their comparison between single and competitive adsorption
Microplastics release phthalate plasticizers (PAEs) into water, and this study found that release rates and adsorption behavior differ significantly between polyethylene, polypropylene, and polystyrene particles, with temperature, pH, and salinity all affecting how much chemical leaches out. When multiple PAEs were present simultaneously, competitive adsorption reduced the uptake of individual chemicals — important context for understanding the real-world chemical exposure that aquatic organisms and humans face from microplastic-contaminated water.
Polycyclic aromatic hydrocarbon derivatives onto polar microplastics of polyurethane: equilibrium, thermodynamics, and kinetics of monolayer-multilayer adsorption
Laboratory experiments measured how four different polycyclic aromatic hydrocarbon (PAH) derivatives — found in oil and combustion pollution — adsorb onto polyurethane foam microplastics in water and artificial seawater. The PAH compounds bonded to polyurethane through multiple mechanisms including hydrogen bonding and pi-pi stacking, and formed multiple layers of adsorption rather than just a single surface layer, leading to higher uptake than simpler plastics. Because polyurethane microplastics are widely present in aquatic environments, they may carry large loads of toxic PAH derivatives to organisms that ingest them.
Modeling the adsorption mechanism of 3-tertiary-butyl-4-hydroxyanisole (3BHA) on polyethylene and polypropylene microplastics.
Using computer simulations, researchers modeled how the food additive and antioxidant 3-BHA (found in foods, cosmetics, and pharmaceuticals) adsorbs strongly onto polyethylene and polypropylene microplastics in water. The modeling shows that microplastics can act as efficient carriers of 3-BHA — a suspected endocrine disruptor already detected in human urine and serum — from farmland soils to aquatic environments. This "Trojan horse" effect means microplastics may amplify human exposure to endocrine-disrupting chemicals beyond what direct ingestion of the chemical alone would cause.
Insights into sorption and molecular transport of atrazine, testosterone, and progesterone onto polyamide microplastics in different aquatic matrices
This study measured the sorption of two hormones and the pesticide atrazine onto polyamide microplastics in different aquatic matrices including freshwater and seawater, finding that water composition significantly affected sorption kinetics and equilibrium, with implications for microplastic roles as contaminant carriers.
Interaction Between Endocrine Disruptors and Polyethylene Nanoplastic by Molecular Dynamics Simulations
Using computer simulations, researchers found that polyethylene nanoplastics can attract and carry endocrine-disrupting chemicals like bisphenol A (BPA) and benzophenone (BZP), with BZP binding nearly three times more strongly to the plastic surface. Even at low concentrations, these chemicals can interfere with hormones and have been linked to various diseases. The findings suggest that nanoplastics in the environment could act as tiny vehicles, delivering harmful chemicals into the body.
Effects of microplastic interaction with persistent organic pollutants on the activity of the aryl hydrocarbon and estrogen receptors
This study investigated how microplastics carrying absorbed chemical pollutants affect hormone-related receptors in human cells. The researchers found that pollutants attached to microplastic surfaces could activate estrogen receptors and interfere with normal hormone signaling. This suggests that microplastics may act as delivery vehicles for endocrine-disrupting chemicals, potentially contributing to hormone-related health problems in people.
Sorption of five organic compounds by polar and nonpolar microplastics
Polar and biodegradable microplastics, including polyurethane and polycaprolactone, showed significant sorption of hydrophobic organic contaminants, with hydrogen bonding playing a greater role than for conventional nonpolar plastics. The findings extend understanding of how a wider range of plastic types can act as vectors for environmental pollutants.
Nanoplastic adsorption characteristics of bisphenol A: The roles of pH, metal ions, and suspended sediments
Researchers found that nanoplastics adsorb bisphenol A through electrostatic, pi-pi stacking, and hydrophobic interactions, with adsorption capacity influenced by pH, competing metal ions, and suspended sediments, highlighting nanoplastics as vectors for BPA transport in aquatic environments.