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61,005 resultsShowing papers similar to Microplastics in sediments of the river Rhine—A workflow for preparation and analysis of sediment samples from aquatic river systems for monitoring purposes
ClearMicroplastic Pollution in Benthic Midstream Sediments of the Rhine River
Microplastic concentrations, compositions, and transport dynamics were characterized in Rhine River sediments, showing that fine sediments act as significant temporary sinks and that particle retention varies by sediment compartment.
Occurrence and Spatial Distribution of Microplastics in River Shore Sediments of the Rhine-Main Area in Germany
Researchers surveyed river shore sediments and documented the occurrence and spatial distribution of microplastics, finding that sediment accumulation zones along riverbanks are hotspots for microplastic deposition.
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.
Microplastics profile along the Rhine River
Researchers measured microplastic concentrations along the Rhine River from source to sea, finding a downstream increase in abundance that reflected cumulative inputs from cities and tributaries, with the Rhine acting as a major conduit delivering plastics to the North Sea.
Comparative assessment of microplastics in water and sediment of a large European river
Researchers quantified microplastics in both water and sediment of the German river Elbe using three complementary methods (visual inspection, FTIR spectroscopy, and pyrolysis-GC/MS), finding that different methods detected different particle fractions and that sediment concentrations were far higher than water.
Macroplastic concentrations in the water column of the river Rhine increase with higher discharge
Researchers used trawl nets at multiple depths in the Rhine River to track macroplastic pollution in the water column, finding that plastic concentrations rise sharply during high river discharge (flooding). During low-flow conditions, plastics accumulated near the riverbed, revealing that hydrology plays a key role in where and how much plastic moves through river systems.
Occurrence, Temporal Variability, and Loads of Poly(vinyl chloride) in the Rhine and Moselle
Researchers monitored the temporal variability and spatial distribution of poly(vinyl chloride) (PVC) microplastics in the Rhine and Moselle rivers in Germany using continuous flow centrifugation to collect suspended matter in the 1 mm-1 micrometer particle size range. They found PVC concentrations up to 3.3 micrograms per liter with a strong dependence on river discharge, providing important baseline data on PVC loads in major European river systems.
Microplastics in floodplain soils along the rhine river in germany
Researchers characterized microplastic pollution in floodplain soils along the Rhine River in Germany, focusing on this understudied habitat at the interface of terrestrial and freshwater systems to understand how rivers act as vectors for microplastic transport and deposition.
Microplastic analysis in sediments of the Elbe River by electrostatic separation and differential scanning calorimetry
Researchers surveyed 43 sediment samples from the Elbe River using electrostatic separation and differential scanning calorimetry, finding microplastics — predominantly polyethylene fibers — at concentrations up to 44.6 mg/kg in harbor basins, with the highest pollution in the middle Elbe between two major tributaries.
Occurrence,Temporal Variability, and Loads of Poly(vinylchloride) in the Rhine and Moselle
Researchers monitored the temporal variability and spatial distribution of poly(vinyl chloride) (PVC) microplastics in the Rhine and Moselle rivers in Germany using continuous flow centrifugation to collect suspended matter in the 1 mm-1 micrometer particle size range. They found PVC concentrations up to 3.3 micrograms per liter with a strong dependence on river discharge, providing important baseline data on PVC loads in major European river systems.
Source, Identification, Distribution, and Abundance of Microplastics in Rivers and Their Ecological Impacts: a Review
This review synthesizes global data on microplastic sources, identification methods, distribution in rivers, and ecological impacts, covering studies from the past two decades. It finds MPs widespread in riverine systems (up to 120 MPs/L in water, 13,607 MPs/kg in sediment), with FTIR and Raman spectroscopy as dominant identification tools and PE/PP fibers and fragments as the most common polymer types.
Microplastics in the Hamburg port area—an analysis of sediment depth profiles along the upper Elbe river, Germany
Researchers collected sediment depth profiles at seven sites in and around the Hamburg port area along the upper Elbe River, Germany, to analyze microplastic concentrations at different burial depths. Results characterize how the unique morphology and high anthropogenic pressure of port environments influence MP accumulation patterns and sediment depth distribution along one of Europe's major river systems.
Microplastics in sediments from urban and suburban rivers: Influence of sediment properties
Researchers measured microplastic concentrations in sediments from 12 sites across three Vietnamese rivers in the Red River Delta during dry and rainy seasons, finding concentrations ranging from 1,600 to 94,300 items per kg dry weight. Fiber-dominated microplastic contamination was strongly influenced by sediment properties including grain size and organic carbon content.
Sinks and sources: Assessing microplastic abundance in river sediment and deposit feeders in an Austral temperate urban river system
Researchers investigated microplastic abundance in river sediments and depositional zones, finding that sediment acts as both a sink and a temporary source, with stored microplastics re-mobilized during high-flow events.
Rapid Assessment of Floating Macroplastic Transport in the Rhine
Researchers developed a rapid assessment methodology to quantify floating macroplastic transport in the Rhine River using visual counting from bridges combined with flow velocity data, demonstrating the feasibility of low-cost monitoring approaches for riverine plastic flux. The study contributes to better understanding of how rivers function as pathways delivering plastic pollution to the ocean.
Riverine microplastic contamination in southwest Germany: A large-scale survey
A large-scale survey of microplastic contamination across multiple rivers in southwest Germany found that contamination increased from headwaters to lowland sections and was elevated downstream of urban areas and wastewater treatment plant discharges. Fibers dominated in all rivers, and the study highlighted rivers as both pathways and temporary sinks for microplastics.
A systems approach to understand microplastic occurrence and variability in Dutch riverine surface waters
Microplastic concentrations in two Dutch rivers ranged from 67 to 11,532 particles per cubic meter, varying by two orders of magnitude across space and one order over time, with polyethylene and polypropylene the most common polymers among 26 types identified. Rigorous quality assurance procedures including partial filter analysis guidelines are proposed to improve measurement reliability.
One Year Observation of Microplastic Concentrations in the River Rhine
Researchers conducted a year-long observation of microplastic concentrations in the River Rhine, generating a large dataset analyzed under rigorous statistical methods. The study provides mass concentration data that establishes environmentally relevant baseline levels, which are essential for realistic risk assessment of microplastic exposure in freshwater systems.
Riverbed depth-specific microplastics distribution and potential use as process marker
Researchers examined the depth-specific distribution of microplastics in riverbed sediments, finding that particle concentration and type varied significantly with sediment depth. The findings suggest that riverbeds act as significant microplastic sinks, with deeper layers representing older accumulation zones.
Occurrence and characteristics of microplastics in water and sediment samples along the red river to the gulf of tonkin, vietnam
Researchers surveyed microplastics in water and sediment along Vietnam's Red River from inland areas to the Gulf of Tonkin, documenting the types, sizes, and polymer compositions present. The findings show how a major river system acts as a pathway delivering plastic pollution from a densely populated landscape into coastal marine waters.
Microplastic Contamination of Fine-Grained Sediments and Its Environmental Driving Factors along a Lowland River: Three-Year Monitoring of the Tisza River and Central Europe
Researchers analyzed microplastic contamination in fine-grained river sediments over three years (2020-2022) along a large river system, examining environmental driving factors including hydrology, land use, and sediment transport dynamics. The study found that hydrological and geomorphological processes are key determinants of where microplastics accumulate and are remobilized.
Direkte Mikro- und Makroplastiktransportmessungen an großen und mittleren Flüssen sowie im Ablauf von Kläranlagen
This German-language study presents direct measurements of micro- and macroplastic transport in large and medium-sized rivers as well as wastewater treatment plant effluents. It addresses a research gap in freshwater plastic transport quantification, providing empirical data on how rivers carry plastics toward marine environments.
Modelling the Fate of Microplastics in river bed sediments.
Researchers modeled microplastic transport, deposition, and burial in river bed sediments under varying hydrological conditions. River bed sediments were found to act as long-term reservoirs for microplastics, with periodic high-flow events temporarily resuspending and redistributing particles.
Towards understanding uncertainties in the measurement of microplastic concentrations in river systems
This research investigates how different laboratory methods affect microplastic measurements in rivers, finding that higher-resolution instruments detect far more particles. The study compared contamination in the Yangtze and Rhine river systems, highlighting that the true extent of microplastic pollution in our waterways may be underestimated depending on the analysis methods used.