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61,005 resultsShowing papers similar to Dissolved organic matter leached from microplastic (MPs-DOM) divergently alters pyrene adsorption in soil
ClearMicroplastic-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.
Microplastic-Derived Dissolved Organic Matter Regulates Soil Carbon Respiration via Microbial Ecophysiological Controls
Researchers investigated how dissolved organic matter released by microplastics affects the way soil microbes process carbon. They found that compounds leaching from both new and aged microplastics stimulated soil carbon release, with aged microplastics having a larger effect by altering microbial community structure. The findings suggest that microplastic pollution may influence soil carbon cycling and potentially affect how effectively soils store carbon.
Impacts of climatic stressors on dissolved organic matter leaching from microplastics and their effects on biogeochemical processes: A review
This review examines how microplastics release dissolved organic matter as they break down in the environment, and how climate change may accelerate this process. The chemicals leached from degrading plastics can disrupt microbial communities and natural nutrient cycles, potentially increasing greenhouse gas production and altering the ecosystems that ultimately support our food and water supplies.
Diverse Impacts of Microplastic-derived Dissolved Organic Matter at Environmentally Relevant Concentrations on Soil Dissolved Organic Matter Transformation
Researchers examined how dissolved organic matter leached from biodegradable and conventional agricultural mulch microplastics affects soil chemistry at environmentally realistic concentrations. They found that UV-exposed microplastic leachates were more bioavailable and caused greater changes to soil organic matter than those produced in dark conditions. The study suggests that even at low concentrations, microplastic-derived compounds can meaningfully alter soil carbon dynamics, with effects varying by soil type.
Adsorption of microplastic-derived organic matter onto minerals
Dissolved organic matter (DOM) released from weathered microplastics was studied for its adsorption onto soil minerals, a process relevant to microplastic fate and potential contaminant transport. Microplastic-derived DOM adsorbed onto mineral surfaces, altering soil chemistry and potentially stabilizing or mobilizing other contaminants in soil-water systems.
Diverse Impactsof Microplastic-derived DissolvedOrganic Matter at Environmentally Relevant Concentrations on SoilDissolved Organic Matter Transformation
Researchers examined how dissolved organic matter derived from agricultural microplastic mulches affects soil DOM transformation in yellow and black soils at environmentally relevant concentrations. They found that microplastic-derived DOM altered soil DOM dynamics in ways that could affect nutrient cycling and soil ecosystem function even at low, realistic exposure levels.
Photo-induced leaching behaviors and biodegradability of dissolved organic matter from microplastics and terrestrial-sourced particles
Researchers studied how light exposure causes microplastics and terrestrial particles to leach dissolved organic matter, and how this leachate behaves in the environment. The study found differences in the biodegradability of leachate from plastic versus natural sources, suggesting that microplastic-derived organic matter may persist differently in aquatic ecosystems.
Microplastic coupled with soil dissolved organic matter mediated changes in the soil chemical and microbial characteristics
Researchers conducted a two-month incubation experiment to study how polyethylene microplastics of different sizes and concentrations affect soil carbon composition and microbial communities. They found that microplastics altered the dissolved organic matter in soil and shifted how microbial communities utilized carbon sources. The study suggests that microplastic accumulation in agricultural soils may have cascading effects on soil health and nutrient cycling.
Microplastic effects on soil organic matter dynamics and bacterial communities under contrasting soil environments
Researchers compared microplastic effects on soil organic matter dynamics and bacterial communities across contrasting soil environments, finding that the type of microplastic polymer and soil conditions together determine whether microbial activity and carbon cycling are stimulated or suppressed.
Microplastic-DerivedDissolved Organic Matter RegulatesSoil Carbon Respiration via Microbial Ecophysiological Controls
Researchers investigated how microplastic-derived dissolved organic matter influences soil carbon respiration, finding that carbon compounds leached from microplastics alter soil heterotrophic microbial ecophysiology and thereby affect carbon sequestration dynamics in contaminated soils.
Effects of microplastics on nitrogen and phosphorus cycles and microbial communities in sediments
Researchers found that PVC, PLA, and polypropylene microplastics altered nitrogen and phosphorus cycling in freshwater sediments by shifting microbial community composition, with effects varying by polymer type and biodegradability.
Microplastics Trigger Soil Dissolved Organic Carbon and Nutrient Turnover by Strengthening Microbial Network Connectivity and Cross-Trophic Interactions
This study found that polyethylene and PVC microplastics in agricultural soil significantly altered the microbial communities responsible for breaking down organic carbon and recycling nutrients. The microplastics strengthened connections between bacteria, fungi, and other microorganisms in ways that accelerated carbon and nutrient turnover. These changes to fundamental soil processes could affect crop nutrition and long-term soil health on farms contaminated with microplastics.
Microplastics enhance soil residue of polycyclic aromatic hydrocarbons: Roles of pH and dissolved organic matter
Researchers used dynamic soil column leaching experiments with multiple controlled factors to investigate how microplastics affect the soil residue of polycyclic aromatic hydrocarbons (PAHs). MPs significantly enhanced PAH persistence in soil by altering sorption-desorption dynamics, with MP type, aging, and soil organic matter content as key modulating factors.
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.
NewInsights into the Long-Term Leaching Process ofDissolved Organic Matter from Microplastics: Dynamic Formation andTransformation Mechanism
Researchers studied the long-term photoaging process and dissolved organic matter (DOM) release from conventional polystyrene and biodegradable PBAT microplastics, finding distinct molecular transformation pathways for each polymer type. Biodegradable PBAT released more labile DOM that altered aquatic carbon cycling differently than conventional PS-derived DOM.
Photochemical reactivity of water-soluble dissolved organic matter from microplastics and microfibers
When microplastics and microfibers sit in water, they leach dissolved organic matter (DOM) that can react with sunlight to produce reactive chemicals. This study found that the type and amount of DOM released depends heavily on polymer chemistry, with aromatic plastics like PET and polystyrene releasing more light-absorbing DOM, and microfibers releasing more DOM overall than microplastic particles. Understanding how plastic-derived DOM breaks down in sunlight is important because these chemical by-products can interact with other aquatic pollutants and affect aquatic ecosystems in ways not yet fully understood.
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.
Microplastics Influence Dissolved Organic Matter Transformation Mediated by Microbiomes in Soil Aggregates
Researchers conducted a 450-day experiment to study how microplastics alter the transformation of dissolved organic matter within soil aggregates, a process critical for soil stability and fertility. They found that microplastics destabilized organic matter in larger soil clumps while increasing its chemical complexity in smaller ones, with biodegradable plastics having the strongest effects. These changes were driven by shifts in microbial communities, suggesting that microplastic pollution could fundamentally alter how carbon cycles through agricultural soils.
Microplastics InfluenceDissolved Organic Matter TransformationMediated by Microbiomes in Soil Aggregates
A 450-day incubation study found that microplastics altered dissolved organic matter (DOM) transformation in soil aggregates by disrupting microbiome composition and activity, with effects differing between macro- and micro-aggregate fractions.
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.
Characterization of the Differences in Dissolved Organic Matter (DOM) Adsorbed on Five Kinds of Microplastics Using Multiple Methods
Researchers developed an optimized method for extracting dissolved organic matter directly from microplastics collected across five different environmental settings. They found that the type of microplastic, its shape, and the environment it was collected from all significantly influenced how much organic matter was adsorbed, with porous extruded polyethylene showing the highest enrichment. The study provides new analytical approaches for characterizing how microplastics interact with organic matter in aquatic and sediment environments.
Molecular insights into effects of PBAT microplastics on latosol microbial diversity and DOM chemodiversity
Researchers found that biodegradable PBAT microplastics significantly altered soil microbial community diversity and dissolved organic matter composition in tropical latosol over 120 days, with effects intensifying at higher microplastic concentrations.
Plastic leachates promote marine protozoan growth
Researchers studied how chemicals leaching from ocean plastics affect the growth of a marine protozoan and its associated bacteria. They found that plastic leachates dramatically increased dissolved organic carbon in seawater, boosting protozoan growth by up to ten times compared to controls. The study suggests that plastic pollution may be altering the base of marine food webs by providing an unnatural carbon source that shifts microbial community dynamics.
Polystyrene microplastics facilitate formation of refractory dissolved organic matter and reduce CO2 emissions
Researchers found that polystyrene microplastics altered the composition and function of microbial communities in aquatic environments, promoting the formation of refractory dissolved organic matter that resists further breakdown. This shift in organic matter composition also led to reduced carbon dioxide emissions from the water system. The study suggests that microplastic pollution may have unexpected effects on aquatic carbon cycling by changing how organic matter is processed by microbes.