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61,005 resultsShowing papers similar to Effects of Co-Existing Microplastics on Adsorption–Desorption Behavior of Perfluorooctanoic Acid in Soil: Co-Sorption and Mechanism Insight
ClearEffects of polyamide microplastics on the adsorption of perfluoroalkyl substances in soil
This study found that polyamide microplastics in soil significantly affect how PFAS (including PFOA and GenX) are adsorbed and retained, with the microplastic-soil mixture behaving differently from either material alone. Since both microplastics and PFAS are widespread soil contaminants, their co-occurrence could change the mobility and bioavailability of these toxic 'forever chemicals,' complicating risk assessments.
Adsorption behaviors of perfluorooctanoic acid on aged microplastics
Researchers studied how PFOA (a type of forever chemical) sticks to aged microplastics and found that weathering did not significantly change the adsorption behavior. The interaction was primarily driven by the water-repelling nature of both the plastics and the chemical. This matters because microplastics in the environment can transport forever chemicals through waterways and potentially into the food chain, increasing human exposure to these persistent pollutants.
Mechanism of perfluorooctanoic acid on microplastic transport in Northeast farmland soils: Based on irrigation mode
Researchers found that perfluorooctanoic acid (PFOA) contamination in irrigation water influences microplastic migration through three types of agricultural soils, with high PFOA concentrations and biochar additions both inhibiting downward microplastic movement into deeper soil layers.
Mechanistic Insights into PFAS Adsorption on Microplastics: Effects of Contaminant Properties and Water Chemistry
Researchers investigated how two widely detected PFAS compounds, PFOS and PFOA, adsorb onto five common types of microplastics in aquatic environments. The study found that contaminant properties and water chemistry significantly influence adsorption behavior, confirming that microplastics can serve as carriers for PFAS transport in waterways.
Effects of ionic strength, cation type and pH on the cotransport of microplastics with PFOA in saturated porous media
Researchers investigated how microplastics and the chemical contaminant PFOA interact when traveling together through saturated soil. The study found that microplastics generally inhibited PFOA transport through adsorption, while PFOA accelerated microplastic movement through electrostatic effects, demonstrating that co-contamination can alter the environmental fate of both pollutants.
Adsorption of PFAS onto secondary microplastics: A mechanistic study
Researchers investigated how PFAS (per- and polyfluoroalkyl substances) adsorb onto secondary microplastics under different water chemistry conditions. Results showed that PFAS adsorption depended on both the chemical structure of the PFAS compound and the ionic composition of the water. These findings help explain how microplastics in real-world aquatic environments can concentrate and transport PFAS, a group of persistent health-relevant pollutants.
Effect of Microplastic Coexistence Conditions on the Environmental Behavior of Atrazine on Soil
Researchers investigated the effect of polyethylene microplastic presence on the environmental behavior of the herbicide atrazine in black and black calcium soils, finding that microplastics increased atrazine adsorption by up to 1.21-fold and that Freundlich isotherms best described the adsorption dynamics.
Cotransport of PFOA with Different Electrically Charged Plastic Particles in Saturated Porous Media
This study investigated how PFOA — a persistent industrial chemical — moves through porous media when combined with plastic particles of different electrical charges. Microplastics can alter the transport of PFOA in soil and groundwater, potentially increasing the spread of this toxic chemical in the environment.
Adsorption of perfluoroalkyl substances on polyamide microplastics: Effect of sorbent and influence of environmental factors
Researchers studied how perfluoroalkyl substances (PFAS), a group of persistent industrial chemicals, bind to polyamide microplastics in water. They found that smaller microplastic particles absorbed dramatically more PFAS than larger ones, and that water chemistry conditions like pH and salinity influenced the process. The findings suggest microplastics can concentrate harmful chemicals and potentially increase human and wildlife exposure to PFAS in contaminated environments.
Occurrence, adsorption and transport mechanism of microplastics in soil
This review synthesizes research on microplastic occurrence, adsorption behavior, and transport mechanisms in soil environments, covering global distribution patterns, sources including agricultural plastic film and sewage sludge, and the adsorption of co-occurring organic pollutants and heavy metals through mechanisms such as pore filling, van der Waals forces, electrostatic interactions, and complexation.
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.
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.
Insight into the effect of microplastics on the adsorption and degradation behavior of thiamethoxam in agricultural soils
Researchers found that microplastics in agricultural soil alter both the adsorption and degradation behavior of the pesticide thiamethoxam, with different plastic types showing varying effects on how the pesticide binds to soil and breaks down over time.
Cotransport of different electrically charged microplastics with PFOA in saturated porous media
Researchers examined how differently charged microplastics co-transport with PFOA through saturated porous media, finding that surface charge significantly influences both MP mobility and PFOA transport behavior, with implications for groundwater contamination.
Adsorption behavior and mechanism of different types of (aged) microplastics for napropamide in soils
Researchers studied how different types of microplastics, both conventional and biodegradable, affect the soil absorption of the herbicide napropamide. They found that aged microplastics had significantly different adsorption properties than new ones, and that the presence of microplastics generally altered how the herbicide behaved in soil. The findings suggest that microplastic pollution may change how agricultural chemicals move through and persist in farmland.
The adsorption process and mechanism of benzo[a]pyrene in agricultural soil mediated by microplastics
Researchers investigated how different types of microplastics affect the adsorption of the carcinogenic pollutant benzo[a]pyrene in agricultural soil. They found that PVC microplastics had the strongest capacity to adsorb this pollutant, increasing soil adsorption by nearly four times compared to soil alone. The study suggests that microplastics in agricultural soils may concentrate harmful organic pollutants, potentially altering their environmental fate and bioavailability.
The influence of humic and fulvic acids on polytetrafluoroethylene-adsorbed arsenic: a mechanistic study
Researchers investigated how PTFE microplastics adsorb arsenic in water in the presence of humic and fulvic acids, finding that humic acid forms π-complexes with PTFE that increase oxygen-bearing surface functional groups, substantially enhancing arsenic adsorption through hydrogen bonding and pore-filling mechanisms.
Sorption and desorption kinetics of PFOS to pristine microplastic
Researchers investigated how the persistent pollutant PFOS sorbs onto polyethylene microplastic particles of different sizes over six months. They found that smaller microplastic particles adsorbed more PFOS due to their greater surface area, and that PFOS could be released from the microplastics under simulated fish gut conditions. The findings suggest that microplastics may act as carriers of chemical pollutants into the digestive systems of aquatic organisms.
Thermodynamic Properties for the Sorption of Perfluorooctanoic Acid and Perfluorooctanesulfonic Acid in Microplastics: A Molecular Simulation Study
Using molecular simulation, researchers calculated the thermodynamic parameters governing adsorption of PFAS compounds onto various microplastic types, finding that PFAS-microplastic binding is spontaneous and exothermic, confirming microplastics as efficient environmental vectors for PFAS transport.
Adsorption-desorption mechanisms and migration behavior of fluchlordiniliprole in four different soils under varied conditions
Researchers investigated the adsorption and desorption behavior of the novel insecticide fluchlordiniliprole across four soil types and how factors including pH, temperature, biochar amendments, and microplastic presence affected these dynamics. Microplastics altered fluchlordiniliprole adsorption capacity in soils, demonstrating that plastic particles modify the fate and mobility of co-occurring pesticides in agricultural environments.
Insights into adsorption mechanisms of nitro polycyclic aromatic hydrocarbons on common microplastic particles: Experimental studies and modeling
Researchers investigated how nitro polycyclic aromatic hydrocarbons adsorb onto common microplastics, finding that the process is controlled by chemical adsorption and hydrophobic partitioning, with pollutant hydrophobicity being the dominant factor influencing adsorption capacity.
Research Progress on The Adsorption and Their Mechanisms of Polycyclic Aromatic Hydrocarbons in Soil by Microplastics
This review examines how microplastic characteristics including polymer type, particle size, density, and aging state influence their adsorption of polycyclic aromatic hydrocarbons (PAHs) in soil, along with how environmental factors such as pH and organic matter modify this interaction. The authors provide a theoretical framework for understanding the combined pollution risk of microplastics and PAHs in terrestrial ecosystems.
The partition behavior of perfluorooctanesulfonate (PFOS) and perfluorooctanesulfonamide (FOSA) on microplastics
This study examined the sorption of PFOS and FOSA — two persistent fluorinated chemicals — onto polyethylene, polystyrene, and PVC microplastics and found that sorption capacity varied by polymer type and was influenced by pH, salinity, and organic matter. The results suggest microplastics could act as transport vectors for these persistent pollutants in marine environments.
Adsorption behavior and mechanism of five pesticides on microplastics from agricultural polyethylene films
Researchers studied how five common pesticides adsorb onto polyethylene microplastics derived from agricultural soil films. They found that all five pesticides bind to microplastic surfaces, with the process driven by both physical and chemical interactions. The study suggests that microplastics in agricultural soils could act as carriers for pesticide contamination, with adsorption capacity varying depending on the pesticide's chemical properties.