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61,005 resultsShowing papers similar to Methodological investigations and understanding of the transfer dynamics of microplastics in the River Seine
ClearA first estimation of uncertainties related to microplastic sampling in rivers
Researchers collected 16 water samples from a French river to test how sampling strategy affects microplastic concentration estimates. Results showed wide variability depending on net deployment time, highlighting that standardized methods are essential before data from different studies can be reliably compared.
Is There a Difference in Yield? A Comparative Analysis of Microplastics Sampling Techniques in River Water with a Low-Velocity Flow
Researchers compared three microplastic sampling techniques in low-velocity river water, quantifying differences in particle abundance and characteristics to evaluate which method most accurately captures microplastic concentrations in surface water environments.
Transfer dynamic of macroplastics in estuaries — New insights from the Seine estuary: Part 1. Long term dynamic based on date-prints on stranded debris
Researchers tracked the transfer dynamics of macroplastics through the Seine estuary using dated Microlax packaging as markers, revealing that plastic transport is nonlinear and highly influenced by tidal cycles, river flow, and deposition events along riverbanks. The findings provide new insight into how estuaries function as temporary plastic reservoirs rather than simple conduits to the sea.
A Methodology for Measuring Microplastic Transport in Large or Medium Rivers
Researchers developed a net-based multi-depth sampling methodology for measuring microplastic transport across the full vertical profile of medium and large rivers, testing it in the Austrian Danube and revealing high heterogeneity in plastic concentrations within a single cross-section. The study demonstrates that surface-only measurements substantially underestimate total plastic transport in rivers due to turbulent mixing, density variation, and biofilm-driven settling.
Dynamics of microplastics in urban rivers under varying hydrological regimes
Monitoring of urban rivers showed that microplastic concentrations fluctuate significantly with varying hydrological conditions such as storm events and seasonal flow changes. Understanding these dynamics is essential for accurately characterizing the river microplastic load and its variability over time.
Variance and precision of microplastic sampling in urban rivers
Researchers assessed the variance and precision of microplastic sampling methods in urban rivers, finding that high spatial and temporal variability in microplastic concentrations requires carefully designed sampling strategies to obtain representative measurements and reliable data for river microplastic assessments.
Historical trends of microplastic pollution in the Seine River (France) from 1960 to 2020 through the study of sedimentary archives
Researchers reconstructed the spatial and temporal history of microplastic pollution in the Seine River basin from 1960 to 2020 using sedimentary archives, characterizing contamination trends across the watershed to provide a long-term pollution record for a major European river system.
Microplastics in sediment deposited along the Seine River after a major flood event (February 2021)
Researchers measured microplastics in sediments deposited along the Seine River during and after a major flood event in February 2021. Flood conditions resuspended sediment and transported microplastics from contaminated riverbanks downstream, redistributing them to new locations. The findings confirm that flood events are significant drivers of microplastic transport and can complicate pollution management efforts.
Microplastic and microfiber fluxes in the Seine River: Flood events versus dry periods
A study of the Seine River found that microfiber and microplastic concentrations in the water column spiked dramatically during flood events compared to dry periods, demonstrating that episodic high-flow events are major transport pulses that can overwhelm patterns observed during routine low-flow monitoring.
Concentration Depth Profiles of Microplastic Particles in River Flow and Implications for Surface Sampling
This study measured microplastic concentration depth profiles in river flow and found that particles are not uniformly distributed in the water column, with implications for sampling strategy and the accuracy of estimates of total microplastic transport.
Controlling Factors of Microplastic Riverine Flux and Implications for Reliable Monitoring Strategy
This review examines the controlling factors that determine microplastic flux from rivers to the sea, identifying hydrology, land use, river morphology, and sampling methodology as key variables, and arguing for standardized monitoring approaches to enable reliable riverine flux estimates.
Transport of (Micro)plastic Within a River Cross-Section—Spatio-Temporal Variations and Loads
This study measured the transport of micro- and macroplastics across a river cross-section over time, revealing how spatial position in the river, flow conditions, and seasonal variation influence plastic distribution. The findings inform more accurate monitoring protocols for river plastic load assessment.
Caractérisation de l’état de contamination de l’axe Seine
A multidisciplinary study of the Seine River in France used passive samplers, caged organisms, and direct water and sediment sampling to characterize contamination across the basin, documenting microplastics, PFAS, antibiotics, pesticides, and metals in both water and biota. Microplastic concentrations were measured in river water and flood deposits, and results showed a clear upstream-to-downstream contamination gradient driven by Paris-region urbanization. The dataset provides one of the most comprehensive multi-contaminant profiles of a major European river system.
The microplastic dynamics between river surface water and sediment compartments
Researchers monitored microplastic distribution in surface water and bottom sediments along an urban river in Japan in August 2022 and 2023, tracking how floating microplastics transported downstream by river flow are deposited into bed sediments. The study aimed to elucidate the exchange dynamics between water column and sediment compartments that account for the discrepancy between observed riverine plastic loads and expected ocean inputs.
Isokinectic pump sampling – a methodoligy addressing the small size ranges of microplastic in rivers
Researchers developed an isokinetic pump sampling methodology for accurately capturing microplastic transport in rivers across the small size fractions typically missed by net-based sampling, demonstrating improved representativeness and comparability of MP monitoring data as part of the Austrian 'Alplast' project.
Small microplastic particles dominate Yangtze River particulate pollution
Researchers conducted annual monitoring of plastic particle fluxes in the Yangtze River estuary, finding that small microplastic particles dominate particulate pollution and that their distribution varies significantly by location and season, with important implications for estimating riverine plastic inputs to the sea.
Microplastics > 25 µm in the Seine river
Researchers measured microplastics larger than 25 µm in the Seine River in France, finding elevated concentrations in urban sections. The data contribute to understanding how the Seine acts as a pathway transporting microplastics from Paris and its suburbs toward the ocean. River monitoring data is essential for estimating plastic inputs to the marine environment.
Seine Plastic Debris Transport Tenfolded During Increased River Discharge
Researchers monitored plastic debris transport in the Seine River in France, finding that plastic flow increased tenfold during high river discharge events compared to low-flow conditions, demonstrating that episodic flood events dominate riverine plastic emissions to the ocean.
Estimating microplastic flows across rural-urban gradients in a French catchment
Researchers estimated microplastic flows along rural-to-urban gradients within a French catchment, quantifying how land use transitions influence MP loading and transport dynamics in surface waters. The study provides spatially resolved flux estimates that reveal how urbanization amplifies microplastic contributions to downstream receiving environments.
Microplastic contamination in an urban area: a case study in Greater Paris
Researchers investigated microplastic contamination across Greater Paris, finding that urban areas generate and accumulate substantial microplastic pollution through multiple pathways including stormwater, atmospheric deposition, and river transport.
Estimating microplastic flows across rural-urban gradients in a French catchment
Researchers estimated microplastic flows across rural-urban gradients in a French catchment, examining how land use and urbanization influence the transport and distribution of microplastic particles through the watershed system.
Identification and quantification of microplastic particles in drinking water treatment sludge as an integrative approach to determine microplastic abundance in a freshwater river
Researchers used drinking water treatment plant sludge as an integrative sampler to estimate microplastic abundance in a freshwater river over extended periods, capturing larger water volumes than conventional net or filtration methods. The approach improves representativeness of microplastic occurrence data in flowing water bodies.
A numerical model of microplastic transport for fluvial systems
Researchers developed a reduced-complexity numerical model of microplastic erosion, transport, and deposition in fluvial systems, applying it to the river Têt in France and finding that a large proportion of microplastics become entrained in river sediments before reaching the ocean.
Cross-Sectional Distribution of Microplastics in the Rhine River, Germany—A Mass-Based Approach
A mass balance study of microplastics across the Rhine River used high-sample-number monitoring at multiple depths and cross-sections, finding that MP concentrations and polymer composition varied substantially across the river's cross-section—revealing underestimation of total MP flux in studies based on surface sampling alone.