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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 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.
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.
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.
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.
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.
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.
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.
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.
An insight into laboratory column experiments for microplastic transport in soil
This review synthesizes findings from laboratory column experiments on microplastic transport through soil, examining how particle size, shape, surface chemistry, and soil properties influence how far plastics migrate in the subsurface.
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.
Vertical transport of microplastic in agricultural soil in controlled irrigation plot experiments
Researchers conducted field plot experiments in agricultural soil and found that microplastics migrate vertically with irrigation water, with smaller particles (53–63 µm) penetrating up to 6 cm deep and larger particles remaining near the surface, indicating that water infiltration is a key driver of subsurface plastic transport.
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.
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.
Irrigation-facilitated low-density polyethylene microplastic vertical transport along soil profile: An empirical model developed by column experiment
Column experiments examined how irrigation drives vertical transport of low-density polyethylene microplastics through soil profiles, and an empirical model was developed from the results. Microplastics migrated to depths beyond the plow layer under irrigation, with transport behavior depending on soil moisture content and particle size.
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.
Biogenic transport of glyphosate in the presence of LDPE microplastics: A mesocosm experiment
A mesocosm experiment showed that earthworms can transport glyphosate and its breakdown product AMPA deeper into soil when low-density polyethylene microplastics are present, altering herbicide distribution compared to soil without microplastics. The results indicate that microplastics can indirectly affect pesticide fate in agricultural soils by modifying biological transport processes.
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.
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.
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.
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.
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.
Transport behavior of microplastics in soil‒water environments and its dependence on soil components
Researchers studied how polystyrene microplastics move through columns packed with different soil components and found that soil organic matter allowed the highest transport efficiency, with over 90 percent of particles passing through. Electrostatic repulsion between the negatively charged microplastics and soil particles was a key factor driving migration. The results suggest that soil composition plays a major role in determining how far microplastics can travel underground toward water sources.