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61,005 resultsShowing papers similar to Organic Matter Sources, Composition, and Quality in Rivers and Experimental Streams
ClearNatural organic matter under human‐influenced environments: Implications for future environmental quality research
This review highlighted that anthropogenic materials including microplastics and nanomaterials have become integrated into soil and dissolved organic matter pools, arguing that environmental scientists need new frameworks to distinguish these altered organic matter pools from natural organic matter.
Interactions between Microplastics and Dissolved Organic Matter in the Fresh Water Environment
This review explores how microplastics interact with dissolved organic matter (DOM) — the complex mixture of carbon compounds found in rivers and lakes — and what that means for freshwater ecosystems. Microplastics readily bind to DOM, altering its distribution in sediments and affecting the microbial communities that depend on it for food and energy. DOM can also change how far microplastics travel and how available they are to aquatic organisms. The interplay between these two classes of contaminant complicates efforts to predict microplastic behavior in the environment.
Microplastic-derived dissolved organic matter and its biogeochemical behaviors in aquatic environments: A review
This review examines how microplastics release dissolved organic matter (MP-DOM) as they break down in water, and how these released chemicals affect water ecosystems. MP-DOM can interact with other pollutants and alter carbon cycling in natural waters, with the type and amount varying based on plastic composition and weathering conditions. Understanding what microplastics release into water as they degrade is important because these dissolved chemicals may have their own toxic effects on aquatic life and water quality.
Integrating Aquatic and Terrestrial Perspectives to Improve Insights Into Organic Matter Cycling at the Landscape Scale
This review examines how organic matter moves and breaks down at the interfaces between aquatic and terrestrial ecosystems at the landscape scale. It is a foundational ecology paper with limited direct relevance to microplastics.
Managing organic micropollutants in rivers : From monitoring to mitigation
This thesis reviewed how organic micropollutants including pharmaceuticals, pesticides, and industrial chemicals end up in rivers and explored monitoring and treatment strategies for their removal. Understanding micropollutant fate in waterways is related to the broader challenge of microplastics, which can also adsorb and transport these same chemical contaminants.
Interplay between microplastics and natural organic matter in association with environmental processes
This review explores how microplastics interact with natural organic matter—the dissolved and particulate carbon that permeates soils and waterways—and how these interactions alter microplastic transport, surface chemistry, and biological availability. Because natural organic matter coats microplastics and changes their behavior, ignoring this interplay leads to underestimates of how far and how dangerously microplastics spread through ecosystems.
Aging behavior of microplastics affected DOM in riparian sediments: From the characteristics to bioavailability
Researchers examined how aging of microplastics in riparian sediments affects dissolved organic matter characteristics and bioavailability, finding that accumulated and weathered microplastics alter carbon cycling functions in these critical river-land interface zones.
Microplastic-derived dissolved organic matter: Generation, characterization, and environmental behaviors
This review examines how microplastics release dissolved organic matter as they break down in the environment, creating a previously overlooked source of carbon and chemical pollution. Researchers found that this microplastic-derived organic matter can interact with other pollutants, affect water quality, and influence microbial communities. The study highlights a lesser-known dimension of microplastic pollution that could have significant environmental consequences.
Environmental Fate of Emerging Organic Micro-Contaminants
This review covers the sources, fate, and toxicity of pharmaceuticals and other organic micropollutants in natural and built environments. It examines how these contaminants, which often co-occur with microplastics, persist in water systems and affect aquatic organisms.
Vertical Profile Characteristics of Dissolved Organic Matter Biochemistry in the Tropical Reservoir Shaped by Hydrodynamic Forces
Despite its title referencing dissolved organic matter in a reservoir, this paper examines how water movement and depth affect the chemical characteristics of natural organic compounds in a tropical Chinese reservoir — not microplastic pollution. It uses spectroscopy to trace organic matter sources and transformations and is not relevant to microplastics or human health.
The implications of water extractable organic matter (WEOM) on the sorption of typical parent, alkyl and N/O/S-containing polycyclic aromatic hydrocarbons (PAHs) by microplastics
This study explored how dissolved organic matter in water affects the ability of microplastics to adsorb persistent organic pollutants like pesticides, finding that organic matter significantly influences microplastics' role as chemical carriers. The results have implications for understanding how microplastics transfer toxic chemicals through aquatic ecosystems.
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.
Parameters of labile organic carbon as the indicators of the stability of soil organic matter under different land use
Despite its title referencing soil organic carbon and land use, this paper studies chemical indicators of soil organic matter stability under different farming practices — not microplastic pollution. It examines which carbon fractions best signal how organic matter is protected in forest and agricultural soils, and is not relevant to microplastics or human health.
Interaction and driving factors influencing microplastics and dissolved organic matter in the hyporheic ecosystem of the Jinghe River Basin under different land-use types
Researchers investigated the interactions between microplastics and dissolved organic matter (DOM) in hyporheic zone sediments of the Jinghe River Basin under different land-use types, finding that land use type directly determined DOM fraction differences and influenced microplastic characteristics, with anthropogenic land uses associated with higher abundances of larger microplastic particles (>= 2,000 micrometers).
Concentration of Total Organic Carbon and Its Fractions in Surface Water in Poland and Germany
This study measured concentrations of total organic carbon and its fractions in river surface water in Poland and Germany, finding high biodegradable organic carbon in some locations. The research provides context for how organic matter in water affects the behavior and transport of other pollutants including microplastics.
Microplastics and benthic animals reshape the geochemical characteristics of dissolved organic matter by inducing changes in keystone microbes in riparian sediments
Researchers found that microplastics and benthic animals together reshape the geochemical characteristics of dissolved organic matter in riparian sediments. The study revealed that both stressors altered keystone microbial communities, leading to changes in how organic matter is processed in river ecosystems, with implications for pollutant behavior and nutrient cycling.
Research progress of persistent organic pollutants in water: classification, sources, potential risks, and treatment approaches
This review summarizes existing research on persistent organic pollutants (POPs) in water, covering their sources, classification, and health risks. The paper notes that microplastics act as carriers for these long-lasting toxic chemicals, transporting them through water systems and potentially increasing human exposure. Understanding how microplastics interact with POPs is important because it means plastic pollution may amplify the health risks of other chemical contaminants.
Plastic and Microplastic in the Environment
This review summarizes the sources, pathways, analytical methods, and distribution of microplastics in freshwater environments, emphasizing that rivers and lakes are major conduits transferring plastic pollution from terrestrial sources to the oceans.
Coupling between Increased Amounts of Microplastics and Dissolved Organic Compounds in Water
This review synthesizes current knowledge on how microplastics in freshwater interact with dissolved organic compounds (DOC), acting as both absorbers and releasers of organic chemicals through hydrophobic interactions, van der Waals forces, and pi-pi stacking. The authors identify a critical gap: while much is known about how MPs adsorb specific pollutants, almost nothing is known about how growing MP concentrations alter the natural dissolved organic matter cycle in lakes and rivers — a potentially major but overlooked ecological impact.
Review of decisive factors for controlling generation and environmental effect of dissolved organic matter from (micro)plastics.
This review examines the composition, formation mechanisms, and environmental risks of dissolved organic matter (DOM) derived from plastics, identifying key controlling factors such as UV irradiation, temperature, and microbial activity, and assessing DOM's potential ecological impacts including toxicity and facilitation of contaminant transport.
Leaf Litter and Benthic Sediments Are Important Reservoirs of Microplastic Pollution in Rivers
A controlled stream mesocosm experiment showed that leaf litter and benthic sediment quickly trap microplastics introduced into rivers, removing nearly all particles from the water column within 28 days. Leaf litter alone captured up to 16–19% of total microplastics, nearly matching sediment retention. These findings are important because they show that organic material in rivers acts as a significant sink for microplastics, meaning leaf-litter removal (e.g., for stream management) could inadvertently re-release trapped particles downstream.
Assessment of Micro-Plastic Contamination in Urban River Systems: A Case Study Using UK Catchment Data
This systematic review examines microplastic contamination in urban rivers across the UK, finding that wastewater treatment plants, stormwater runoff, and industrial discharge are the main sources. The research matters for human health because urban rivers supply drinking water and recreational areas, and microplastic pollution in these waterways increases the risk of human exposure.
Microplastics meet micropollutants in a central european river stream: Adsorption of pollutants to microplastics under environmentally relevant conditions
Researchers investigated how microplastics adsorb organic micropollutants in a Central European river under real-world conditions. They found that aged microplastics showed higher adsorption capacity for contaminants compared to pristine ones, and that the type of plastic material influenced which pollutants were absorbed. The findings suggest that microplastics in rivers can act as carriers for harmful chemicals, potentially spreading contamination through aquatic ecosystems.
Monthly Year-Round Characteristics and Ocean Export of Riverine Organic Matter: Relationship with Microplastics
Researchers conducted year-round monthly sampling of a river system to characterize the quantity and composition of organic matter exported to the ocean, examining how microplastics contribute to allochthonous carbon fluxes and how their transport co-varies with seasonal changes in riverine organic matter dynamics.