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61,005 resultsShowing papers similar to Impact of polyethylene microplastics on the vertical migration of pesticides in soil
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.
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.
Polyethylene microplastics influence the transport of organic contaminants in soil
Laboratory experiments showed that polyethylene microplastics in soil altered the transport and distribution of organic contaminants, acting as secondary carriers that changed contaminant mobility through the soil matrix. The findings suggest microplastics in agricultural soils could inadvertently redistribute pesticides and other pollutants, with implications for groundwater quality.
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.
Influence of CA, PE, and PET microplastics on the migration of imidacloprid in porous media: Experiments and theoretical modeling
Column experiments and molecular dynamics simulations were used to investigate how cellulose acetate, polyethylene, and PET microplastics influence the transport of the pesticide imidacloprid through porous media. MPs with higher adsorption capacity retarded imidacloprid mobility, while those with lower adsorption facilitated transport, revealing polymer-specific effects on pesticide fate in soils.
Migration dynamics of PE and PVC microplastics in soil: An experimental column-based investigation on the effects of drip irrigation
Researchers conducted column experiments to track how polyethylene (PE) and polyvinyl chloride (PVC) microplastics move through soil under drip irrigation conditions, examining how irrigation practices influence the depth and speed at which these plastic particles migrate. The findings have implications for understanding microplastic contamination of agricultural soils and groundwater.
Sorption of organochlorine pesticides on polyethylene microplastics in soil suspension
Polyethylene microplastics sorbed organochlorine pesticide residues including hexachlorocyclohexane isomers in soil suspension experiments, with sorption capacity influenced by microplastic surface weathering and soil organic matter content, demonstrating that microplastics can act as secondary carriers for legacy pesticide contamination in agricultural soils.
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.
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.
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.
Interactions of Microplastics with Pesticides in Soils and Their Ecotoxicological Implications
This review examines how microplastics interact with pesticides in soil environments, finding that microplastics can sorb and transport pesticides, potentially altering their bioavailability and toxicity to soil organisms and ecosystems.
A comparative study on the adsorption behavior of pesticides by pristine and aged microplastics from agricultural polyethylene soil films
Researchers compared how pristine and aged agricultural polyethylene film microplastics adsorb pesticides. They found that aged films, which develop rougher surfaces, more cracks, and oxygen-containing chemical groups, adsorb pesticides more readily than pristine ones. The study suggests that weathered agricultural microplastics in soil may act as carriers for pesticide contamination, potentially increasing environmental and human health risks.
Low-density polyethylene microplastics as a source and carriers of agrochemicals to soil and earthworms
Researchers investigated whether low-density polyethylene microplastics could act as carriers of agrochemicals in soil and found that the particles both released their own chemical additives and transported pesticides to earthworms. The study suggests microplastics in agricultural soils may serve as a previously underappreciated pathway for chemical exposure in soil organisms.
Soil structures and immobilization of typical contaminants in soils in response to diverse microplastics
Soil column experiments with polyethylene, polyacrylonitrile, and PET microplastics at 0.5% by weight found that all three polymer types altered soil aggregate structure and affected the mobility of the hydrophobic organic contaminant phenanthrene and heavy metals through the soil profile. PET MPs most strongly changed soil structure and increased phenanthrene leaching, while PAN MPs had the greatest effect on heavy metal mobility.
Assessing the role of polyethylene microplastics as a vector for organic pollutants in soil: Ecotoxicological and molecular approaches
Polyethylene microplastics were shown to act as vectors for organic pollutants including pharmaceuticals and pesticides in soil, with earthworm bioaccumulation assays and molecular endpoints revealing that MPs increased contaminant uptake compared to soil exposure alone.
Influência nos processos de retenção e transporte de pesticidas e ecotoxicidade de microplásticos em solo tropical
Researchers investigated how high-density polyethylene microplastics from agricultural mulch films influence the retention and transport of pesticides in tropical soil, finding that microplastics alter pesticide dynamics and may increase their environmental persistence and ecotoxicity.
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.
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.
Microplastics and nanoplastics barely enhance contaminant mobility in agricultural soils
A mesocosm study found that micro- and nanoplastics in agricultural soils had minimal effect on the mobility of sorbed organic contaminants toward deeper soil layers, suggesting that concerns about plastics significantly enhancing contaminant transport to groundwater may be overstated under typical field conditions.
Co-occurrence of multiple contaminants: Unentangling adsorption behaviour in agricultural soils
This study examined how microplastics in agricultural soil interact with pesticides and pharmaceutical compounds, finding that microplastics increased pesticide absorption by 120-730% in some soils. This means microplastics can concentrate pesticides in soil, potentially creating toxic hotspots. The findings are important for food safety because crops grown in soil contaminated with both microplastics and pesticides may be exposed to higher levels of chemicals than expected.
Adsorption of acetamiprid, chlorantraniliprole and flubendiamide on different type of microplastics present in alluvial soil
Researchers investigated the adsorption of three pesticides (acetamiprid, chlorantraniliprole, and flubendiamide) onto different types of microplastics in alluvial agricultural soil, finding that microplastics act as vectors for these organic pesticide compounds and affect soil microorganism activity.
Agricultural film-derived microplastics elevate the potential risk of pesticides in soil ecosystem: The inhibited leaching by altering soil pore
Researchers found that microplastics derived from agricultural mulch film can increase the environmental risk of pesticides by altering soil pore structure and inhibiting pesticide leaching. Smaller microplastic particles had a stronger effect on trapping pesticides in the upper soil layers, leading to higher localized concentrations. The study suggests that the co-occurrence of microplastics and pesticides in farm soils may create compounding contamination risks for agricultural ecosystems.
Sorption of pesticides onto polyethylene microplastics in different aqueous matrices
This thesis examined how pesticides adsorb onto polyethylene microplastics in different aqueous matrices, finding that water chemistry significantly affects the binding behavior and potential for microplastics to carry agricultural chemicals.
Adsorption behaviors of atrazine and imidacloprid on high temperature aged microplastics: Mechanism and influencing factors
Researchers investigated how aged polyethylene microplastics — the kind that have been weathered by UV light and heat in the environment — adsorb common agricultural pesticides, finding that microplastics can accumulate pesticides like atrazine and imidacloprid at high concentrations through hydrophobic (water-avoiding) interactions. This "Trojan horse" effect means microplastics can carry and potentially concentrate pesticides as they move through water environments.