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61,005 resultsShowing papers similar to Influence of CA, PE, and PET microplastics on the migration of imidacloprid in porous media: Experiments and theoretical modeling
ClearImpact of polyethylene microplastics on the vertical migration of pesticides in soil
Researchers investigated how polyethylene microplastics affect the vertical migration of pesticide mixtures in soil using stainless steel column experiments with sandy reference soil, finding that microplastics' hydrophobic surfaces and high sorption capacity altered the transport of 20 pesticides compared to uncontaminated soil.
Impact of polyethylene microplastics on the vertical migration of pesticides in soil
Researchers investigated the impact of polyethylene microplastics on the vertical migration of complex pesticide mixtures in soil using medium-sized column experiments with 20 pesticides, addressing the gap that prior studies had focused on single-compound rather than multi-compound contamination scenarios. The study examined how microplastic hydrophobic surfaces and sorption capacity alter pesticide mobility and leaching risk in agricultural soils.
Effects of neonicotinoid insecticides on transport of non-degradable agricultural film microplastics
Researchers investigated how neonicotinoid insecticides adsorb onto agricultural film microplastics and affect their transport through porous media, finding that neonicotinoids altered microplastic mobility in ways that could influence contaminant spread in farmland soils.
The vertical migration of a pesticide mixture in sandy soil is strongly driven by their sorption behavior and can be altered by Polyethylene Microplastics
Researchers packed sandy soil columns with a mixture of 20 pesticides and 1% polyethylene microplastics, then flushed them with contaminated water to track pesticide movement. They found that PE microplastics accelerated the downward migration of five slowly leaching pesticides, increasing the risk of groundwater contamination.
Transport of polyethylene and polypropylene microplastics under the action of agricultural chemicals: Role of pesticide adjuvants and neonicotinoid active ingredients
Column experiments showed that pesticide adjuvants (surfactants) and neonicotinoid active ingredients both influenced the transport of polyethylene and polypropylene microplastics through saturated porous media, with surfactants generally enhancing mobility.
Theoretical Studies in Molecular Dynamics and DFT of the Interaction between Imidacloprid in Polyethylene and Polypropylene Surfaces
Researchers used computational chemistry to model how the pesticide imidacloprid interacts with polyethylene and polypropylene microplastic surfaces. They found that the pesticide can adsorb onto both types of plastic, with polypropylene showing stronger binding in certain conditions. The study suggests that microplastics in agricultural soils could act as carriers for pesticides, potentially altering how these chemicals spread through the environment.
A comparative study on the adsorption behavior and mechanism of pesticides on agricultural film microplastics and straw degradation products
Researchers compared how agricultural film microplastics and straw-derived cellulose particles adsorb pesticides in farmland soils, finding that both materials sorb pesticides but through different mechanisms, with microplastics showing higher affinity for hydrophobic compounds, potentially altering pesticide mobility and bioavailability.
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.
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.
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.
Interactions of traditional and biodegradable microplastics with neonicotinoid pesticides
Researchers investigated how both traditional and biodegradable microplastics interact with neonicotinoid pesticides in agricultural environments. They found that all microplastic types could adsorb the pesticide thiacloprid, but biodegradable microplastics showed different sorption behavior and higher desorption rates compared to conventional plastics. The study suggests that biodegradable microplastics may actually increase pesticide mobility in soils, creating a previously unrecognized pathway for agricultural chemical contamination.
Natural Organic Matter Decreases the Sorption Capacityof Fipronil and Its Degradation Products onto Polyethylene Microplastics:Combined Experimental and Theoretical Insights
Researchers assessed the sorption behavior of the insecticide fipronil and its degradation products onto polyethylene microplastics in the presence of natural organic matter (NOM) using combined kinetic experiments and computational modeling. They found that dissolved NOM substantially reduced the sorption capacity of microplastics for fipronil compounds by competing for hydrophobic binding sites on the polymer surface.
Adsorption mechanism of two pesticides on polyethylene and polypropylene microplastics: DFT calculations and particle size effects
Researchers studied how two common pesticides, carbofuran and carbendazim, adsorb onto polyethylene and polypropylene microplastics using both experiments and computational chemistry. They found that the type and size of microplastic particles significantly influenced how much pesticide was absorbed, with smaller particles binding more chemicals per unit weight. The study reveals that microplastics in agricultural environments can act as carriers for pesticides, potentially increasing their transport into waterways.
Microplastic polymer type impacts water infiltration and its own transport in soil
Researchers conducted laboratory soil column experiments to examine how microplastic polymer type affects both water infiltration rates and the transport of the plastic particles themselves through soil, testing the two most commonly used agricultural microplastic types under controlled hydrological conditions. The study found that polymer type significantly influenced both water flow dynamics and microplastic mobility in soil, with important implications for predicting plastic fate in agricultural and natural terrestrial ecosystems.
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.
The role of microplastic aging on chlorpyrifos adsorption-desorption and microplastic bioconcentration
Researchers investigated how microplastic aging affects chlorpyrifos adsorption-desorption behavior, finding that aged microplastics had higher pesticide sorption capacity and bioconcentration potential, suggesting weathered MPs pose greater risks as pollutant carriers.
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.
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.
Microplastic polymer type impacts water infiltration and its own transport in soil
Researchers examined how different types of microplastics move through soil and affect water infiltration. They found that polypropylene, being more hydrophobic, impeded water flow more strongly than polyethylene terephthalate, while PET was more mobile in the soil column. The study suggests that a microplastic's surface properties and density play key roles in determining both how it travels through soil and how much it disrupts water movement.
Preliminary investigation on effects of size, polymer type, and surface behaviour on the vertical mobility of microplastics in a porous media
Laboratory sand column experiments investigated how microplastic size, polymer type, and surface chemistry influence retention and transport behavior in subsurface environments. Results showed that smaller particles and those with surface modifications traveled farther, informing predictions of microplastic migration in soils and groundwater.
Adsorption of three pesticides on polyethylene microplastics in aqueous solutions: Kinetics, isotherms, thermodynamics, and molecular dynamics simulation
Adsorption experiments showed that polyethylene microplastics bind three pesticides (imidacloprid, buprofezin, difenoconazole) in aqueous solution via physical mechanisms, with adsorption capacity following the order difenoconazole > buprofezin > imidacloprid based on hydrophobicity, and fitting Freundlich isotherm and pseudo-first-order kinetic models.
Influence on the processes of retention and transport of pesticides and ecotoxicity of microplastics in a tropical soil
Researchers investigated how high-density polyethylene microplastics from agricultural mulch films affect the behavior of three pesticides in tropical soil, finding that microplastics altered pesticide sorption, transport, and leaching while also increasing ecotoxicological effects on earthworms.
Natural Organic Matter Decreases the Sorption Capacity of Fipronil and Its Degradation Products onto Polyethylene Microplastics: Combined Experimental and Theoretical Insights
Researchers examined how natural organic matter (NOM) affects the sorption of the insecticide fipronil and its degradation products (fipronil sulfone and fipronil sulfide) onto polyethylene microplastics in both ultrapure and river water using kinetic experiments and computational modeling. They found that NOM substantially decreased sorption capacity by competing for binding sites on the microplastic surface, with theoretical insights confirming the competitive displacement mechanism.
Comparative analysis on the sorption kinetics and isotherms of fipronil on nondegradable and biodegradable microplastics
The sorption behavior of the pesticide fipronil onto biodegradable and conventional non-degradable microplastics was compared through both experiments and molecular dynamics simulations, finding differences in how strongly each plastic type binds the pesticide. Biodegradable plastics, often considered safer alternatives, may carry different pesticide contamination risks than conventional plastics when they fragment into microparticles.