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20 resultsShowing papers similar to Vertical transport of microplastic in agricultural soil in controlled irrigation plot experiments
ClearExploring the vertical transport of microplastics in subsurface environments: Lab-scale experiments and field evidence
Researchers investigated how microplastics move downward through soil using laboratory column experiments and field sampling of groundwater. They found that heavier rainfall, smaller particle size, and fiber-shaped microplastics all increased vertical transport through unsaturated soil. Field samples confirmed the presence of microplastics in both soil layers and groundwater, suggesting that surface plastic pollution can migrate into underground water supplies.
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.
Minimal vertical transport of microplastics in soil over two years with little impact of plastics on soil macropore networks
A two-year field experiment found that microplastics placed on the soil surface moved very little downward, with only about 1% reaching below 8 cm depth, and had minimal effect on soil structure. While this suggests microplastics do not quickly contaminate deeper soil layers, they do persist near the surface where they can still be taken up by shallow-rooted crops.
Size/shape-dependent migration of microplastics in agricultural soil under simulative and natural rainfall
Researchers found that microplastic migration in agricultural soil under rainfall depends on particle size and shape, with smaller particles moving deeper and rainfall intensity significantly influencing vertical transport patterns in soil profiles.
Drip Irrigation Promoted Migration of Microplastic Particles Across Vertical Soil Columns.
Researchers at IIT Roorkee experimentally investigated microplastic particle migration through vertical soil columns under drip irrigation conditions, finding that drip irrigation accelerates downward transport of microplastics across soil horizons compared to surface application scenarios.
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.
Horizontal and vertical mobilisation of microplastics in agricultural soils: run-off and infiltration experiments
Researchers studied the horizontal and vertical movement of microplastics from agricultural mulch films in soil, examining runoff and leaching as transport pathways. The study found that microplastics from mulch films migrate both downward into the soil profile and laterally via surface runoff.
Horizontal and vertical mobilisation of microplastics in agricultural soils: run-off and infiltration experiments
Researchers measured the horizontal runoff and vertical leaching of microplastics from agricultural mulching films in field plots, quantifying transport under simulated rainfall. Both transport pathways were significant, with particle size and soil properties influencing how far microplastics moved from their source.
Processes controlling the transportation of microplastics in agricultural soils
Researchers investigated the physical processes controlling microplastic transport through agricultural soils, examining how soil structure, water flow, bioturbation, and particle properties interact to move microplastics from surface application sites deeper into the soil profile or laterally toward aquatic systems. The study addressed the dual role of agricultural soils as both sinks and potential sources of microplastic pollution to surrounding environments.
Vertical migration of microplastics in porous media: Multiple controlling factors under wet-dry cycling
Researchers studied how microplastics move vertically through sandy soil during cycles of wetting and drying, testing four common plastic types at various particle sizes. They found that smaller, more hydrophobic particles migrated deeper, and that frequent wet-dry cycles and the presence of dissolved organic matter accelerated downward movement. The findings suggest that microplastics in agricultural soils could potentially reach groundwater, posing risks to underground water quality.
Microplastic fate in soil environments: Drivers of the vertical transport of mulching film fragments
This study examined the vertical transport and fate of microplastics in soil environments, focusing on particles generated from the degradation of plastic mulch films used in agriculture. Multiple drivers including soil structure, rainfall, and particle properties were shown to influence how deeply microplastics migrate through the soil profile.
Microplastic distribution and transport in agricultural soils : from field to burrow scale
Researchers investigated the spatial distribution and transport of microplastics in agricultural soils through field surveys and laboratory experiments. They found that sewage sludge amendments led to significantly higher microplastic contamination than mineral fertilizers, and that earthworm activity was a key mechanism for moving plastic particles deeper into soil. The study highlights the importance of accounting for both horizontal and vertical microplastic transport in soils when assessing agricultural pollution.
Rainfall-induced lateral and vertical microplastic transport of varying sizes in agricultural fields
Rainfall simulation experiments tracked polyethylene microplastics of three size ranges (53–500 µm) on agricultural soil plots, finding that smaller particles were transported farther laterally in surface runoff and penetrated deeper into soil profiles, highlighting size-dependent microplastic mobility under rainfall conditions.
Microplastic fate in soil environments: Drivers of the vertical transport of mulching film fragments
Researchers investigated the vertical transport of microplastics from plastic mulch films in soil, identifying factors that control how far particles move downward into the soil profile. Particle size, shape, and soil properties were found to be key drivers of microplastic vertical migration.
Impact of Different Soil Tillage Practices on Microplastic Particle Abundance and Distribution
Field experiments across different tillage and fertilization regimes quantified microplastic abundance and vertical distribution in agricultural soils, finding that tillage practices significantly influenced how deeply microplastics are mixed through the soil profile.
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.
Vertical distribution and multi-source pathways of microplastics in agricultural soils: A study of typical irrigation areas in the upper Yellow River basin
Researchers found that farmland soil in the upper Yellow River region contained significantly more microplastics than nearby forest or grassland, with plastics detected in all soil layers down to one meter deep. Flood-style irrigation pushed microplastics much deeper into the ground than drip irrigation, doubling contamination levels. This is concerning because microplastics migrating deep into agricultural soil could eventually reach groundwater that people depend on for drinking water.
Interactions between water flow and microplastics in silt loam and loamy sand
Researchers found that increasing microplastic content (1-7% w/w) in both silt loam and loamy sand soils enhanced water infiltration rates, driving microplastic particles deeper into the soil profile. The study reveals a feedback mechanism where microplastics alter the very water flow patterns responsible for their own transport and distribution.
Microplastics undergo accelerated vertical migration in sand soil due to small size and wet-dry cycles
Polyethylene and polypropylene microplastics of varying sizes were tracked through sand soil columns under repeated wet-dry cycles, finding that the smallest particles (21 μm PE) migrated deepest and that migration depth increased linearly with the number of wet-dry cycles. The study reveals that small microplastics can penetrate much deeper into soil profiles than larger particles, raising concern about groundwater contamination.
Vertical transport of microplastics from agricultural mulching films and associated chemical additives in soil ecosystems
Researchers tracked the vertical migration of microplastics derived from agricultural mulching films through soil profiles, finding that plastic particles and associated chemical additives can move downward through the soil column, raising concerns about groundwater contamination.