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61,005 resultsShowing papers similar to A Preliminary Study of Microplastics and Microfibers at the Molly Ann Brook, Nj
ClearMicroplastic pollution differences in freshwater river according to stream order: Insights from spatial distribution, annual load, and ecological assessment
Researchers compared microplastic pollution levels in a freshwater river across different land-use zones, finding higher concentrations near urban and agricultural areas than in forested regions. Fiber-type microplastics were predominant across all sampling locations.
Microplastic pollution in urban streams across New Zealand: concentrations, composition and implications
Microplastic pollution was surveyed across urban streams throughout New Zealand, with plastic fragments and fibers detected at alarming concentrations in many waterways. The study highlights the widespread contamination of freshwater systems in New Zealand and identifies key sources including stormwater runoff and wastewater.
Abundance of Microplastics in Freshwater Streams of Rural Areas
This study surveyed microplastic concentrations in freshwater streams in rural areas, finding plastic particles including microbeads from personal care products and synthetic fibers in most samples. The results indicate that microplastic contamination extends well beyond urban settings into rural waterways.
Identification and Characterization of Microplastics in Freshwater Systems: a Close Look at the Poquessing Creek- a Delaware River Tributary
Scientists sampled a Pennsylvania creek tributary to the Delaware River and found microplastics at all sampling locations, with fibers and fragments being the most common types. Urban freshwater systems routinely carry microplastics that can accumulate in drinking water sources downstream.
Microplastics in urban New Jersey freshwaters: distribution, chemical identification, and biological affects
Researchers characterized microplastics in the heavily urbanized Raritan and Passaic Rivers in New Jersey, identifying polymer types at 15 sites using pyrolysis-GC/MS and finding that associated organic compounds can transfer between plastic and water phases, with embryonic zebrafish exposed to identified polymers showing physiological effects.
Distribution and risk assessment of microplastic pollution in a rural river system near a wastewater treatment plant, hydro-dam, and river confluence
This study measured microplastic pollution in a rural river in New York State and found elevated concentrations near a wastewater treatment plant, a hydroelectric dam, and a river junction. Even in this mostly forested and agricultural area, all sites were polluted with microplastics at concerning levels. The findings demonstrate that microplastic contamination is not just an urban problem and can affect rural waterways that communities depend on.
Microplastics in Western NY River Ecosystems
Researchers assessed microplastic pollution in river ecosystems of Western New York, characterizing particle abundance, types, and distribution across sampling sites. The study provides regional baseline data and highlights urban and agricultural land use as contributors to freshwater microplastic contamination.
Microplastic Abundance and Variation in the Blind Brook Stream
Researchers sampled sediment from multiple points along the Blind Brook stream to map microplastic distribution, finding that abundance varied significantly along the waterway and that fibers and fragments were the most common shapes detected.
Quantification and composition of microplastics in the Raritan Hudson Estuary: Comparison to pathways of entry and implications for fate
A comprehensive microplastic survey of the Raritan Hudson Estuary characterized particle abundance and polymer composition across multiple media and compared concentrations to known input pathways, identifying wastewater treatment plant effluent and stormwater as the dominant sources.
Occurrence and Quantification of Natural and Microplastic Items in Urban Streams: The Case of Mugnone Creek (Florence, Italy)
Researchers monitored microplastic and natural fiber fluxes in Mugnone Creek, a small urban stream in Florence, Italy, over two years across dry and wet seasons, finding the creek transports significant microplastic loads to the Arno River and ultimately the Tyrrhenian Sea.
Widespread microplastic pollution in Indiana, USA, rivers
Researchers surveyed nine Indiana river watersheds and found microplastics in every single one, regardless of whether the surrounding land was urban, agricultural, or forested. Plastic fibers dominated across all sites, suggesting they arrive mainly via atmospheric deposition rather than runoff, which means even remote waterways are exposed. The findings indicate that rivers have a distinct microplastic profile compared to large lakes, and that flowing water ecosystems are pervasively contaminated throughout the midwestern United States.
Impact of land cover on microplastics accumulation in freshwater sediments
Researchers collected sediment cores from four Pennsylvania watersheds with different land uses to examine how land cover influences microplastic accumulation in freshwater sediments over time. Urban and agricultural watersheds showed higher microplastic concentrations than forested watersheds, with fibers being the most common morphotype.
Pervasive occurrence of microplastics in Hudson-Raritan estuary zooplankton
Researchers found microplastics in the majority of zooplankton samples collected across the Hudson-Raritan estuary, with fibers being the most prevalent particle type, indicating that estuarine zooplankton are extensively exposed to microplastic contamination and represent a pathway for plastic entry into the food web.
Fluvial Concentrations of Microplastics in a Suburban Micro-Watershed: Sampling Methodology and Analysis
Researchers designed a low-cost sampling station to collect and quantify microplastics in a shallow suburban stream in South Carolina. They found that microplastic abundance increased from the top of the watershed to the bottom, rising from about 269 to 715 particles per 10 cubic meters of surface water. Fibers were the dominant type, and the study highlights the need for standardized sampling methods for small freshwater streams.
Microplastic contamination in urban aquatic environments: Occurrence characteristics in urban streams and stormwater runoff from urban surfaces
Researchers examined microplastic contamination in urban streams and stormwater runoff across different seasons and found that wastewater treatment plant discharges were a major source during dry weather. During rainy periods, stormwater runoff from roads and rooftops contributed additional microplastics, predominantly fibers and fragments. The study highlights that urban water systems receive microplastic pollution from multiple pathways year-round.
Temporal/Spatial Trends and Concentrations of Microplastics in Streams Throughout the Central Illinois Watersheds
This study measured microplastic concentrations across streams in a U.S. city, finding elevated levels downstream of wastewater treatment plants and in urban waterways. The results highlight urban wastewater discharge as a key pathway delivering microplastics from everyday activities — including laundry — into freshwater systems.
Occurrence and distribution of plastic particles (10–25,000 μm) and microfibers in the surface water of an urban river network in Japan
This study assessed the occurrence and distribution of plastic particles (10-25,000 micrometers) and microfibers in the surface water of an urban river network in Japan, finding that plastic abundance was closely tied to urban land use and proximity to discharge points.
The effect of urban point source contamination on microplastic levels in water and organisms in a cold‐water stream
Microplastic concentrations in water, macroinvertebrates, and trout in a Wisconsin stream increased significantly downstream of stormwater outfalls and a wastewater plant. The study demonstrates that point sources of pollution drive measurable increases in microplastic contamination in freshwater food webs.
Microplastics in Four Estuarine Rivers in the Chesapeake Bay, U.S.A.
Researchers surveyed microplastics in four estuarine rivers of the Chesapeake Bay watershed and found contamination across all sites, with fibers as the dominant type and concentrations reflecting inputs from surrounding urban and suburban land use.
First evidence of microplastics in a freshwater river and their relationship to water quality
Researchers measured microplastic concentrations in a freshwater river used for recreational purposes and found a significant relationship between microplastic abundance and water physicochemical quality parameters, along with the presence of three organic compounds, providing evidence that microplastic pollution and water quality are closely linked.
Sources, Occurrence, and Analysis of Microplastics in Freshwater Environments
This review summarizes current knowledge on microplastic sources and occurrence in freshwater environments, noting that freshwater systems are major conduits delivering microplastics to the ocean. The review highlights that freshwater microplastic research lags far behind marine studies despite rivers and lakes being primary pollution pathways.
Microplastic pollution in streams spanning an urbanisation gradient
Researchers sampled microplastics in small streams across an urbanization gradient and found contamination at all sites, with concentrations comparable to those in larger rivers and lakes. Fragments and small particles between 63 and 500 micrometers were the most common forms detected. Surprisingly, catchment-scale factors like population density and stormwater overflows did not predict microplastic levels well, suggesting that local-scale sources may be more important for pollution in small streams.
An Assessment of Microplastic Pollution in Several Streams of Gyeonggi-do
This study assessed microplastic pollution in several streams in Gyeonggi-do, South Korea, finding microplastic concentrations in freshwater environments and contributing data to a literature dominated by marine studies.
Plastics in Paradise: Quantifying Microplastics in Lake Champlain Beaches
Researchers quantified and characterized microplastics on Lake Champlain beaches, finding contamination at all sampled sites with fragments and fibers as the dominant particle types. The study documents that even inland freshwater shorelines accumulate significant microplastic loads over time.