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61,005 resultsShowing papers similar to Interaction of biosolids-derived dissolved organic matter with microplastics: EEM analysis
ClearEffects of Microplastics and Organic Fertilizer Regulation on Soil Dissolved Organic Matter Evolution
This study examined how microplastic addition to soil affects dissolved organic matter (DOM) evolution, focusing on the interactions between microplastics as carbon sources and organic fertilizer. Microplastics altered DOM composition and quantity, with effects on soil carbon cycling that varied by plastic type and organic fertilizer combination, suggesting complex interactions between plastic pollution and soil amendment practices.
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.
Microplastic leachates in farmland: impact of acid rain on DOM characteristics and metal release
Researchers investigated how varying acid rain conditions affect the leaching of dissolved organic matter (DOM) and heavy metals from microplastics commonly found in agricultural soils, characterizing leachate physicochemical properties and three-dimensional fluorescence profiles and finding that acid rain intensity significantly altered contaminant release patterns.
The deciphering of microplastics‐derived fluorescent dissolved organic matter in urban lakes, canals, and rivers using parallel factor analysis modeling and mimic experiment
Fluorescent dissolved organic matter leached from microplastics in urban lakes, canals, and rivers was characterized using 3D excitation-emission matrix spectroscopy, identifying five distinct fluorophores linked to plastic degradation products.
Spatiotemporal heterogeneous effects of microplastics input on soil dissolved organic matter (DOM) under field conditions
Researchers conducted a long-term field experiment and found that microplastic inputs have spatiotemporally heterogeneous effects on soil dissolved organic matter (DOM), with implications for soil carbon dynamics under increasing terrestrial plastic contamination.
A fluorescence indicator for source discrimination between microplastic-derived dissolved organic matter and aquatic natural organic matter
Fluorescence analysis of dissolved organic matter leached from expanded polystyrene, PVC, and PET microplastics was used to identify a unique optical signature that could distinguish microplastic-derived DOM from natural organic matter in aquatic environments.
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.
Deciphering the Fingerprint of Dissolved Organic Matter in the Soil Amended with Biodegradable and Conventional Microplastics Based on Optical and Molecular Signatures
Researchers compared the effects of biodegradable and conventional microplastics on dissolved organic matter in two soil types using advanced spectroscopy techniques. They found that biodegradable polybutylene succinate significantly increased dissolved organic carbon and generated more biologically active organic molecules, likely due to polymer degradation. Conventional microplastics showed subtler effects that varied between soil types, suggesting that both biodegradable and non-biodegradable plastics can alter soil chemistry in distinct ways.
Changes in Fluorescence of Aquatic Dissolved Organic Matter Induced by Plastic Debris
Researchers investigated how plastic debris influences fluorescent dissolved organic matter (FDOM) in freshwater, contaminating river and tap water samples under controlled laboratory conditions and assessing bacterial proliferation via fluorescence spectroscopy, dynamic light scattering, and flow cytometry. The study found that plastic-derived FDOM affected the dissolved-particulate organic matter continuum and altered bacterial cell proliferation, demonstrating that fluorescence spectroscopy can effectively identify plastic FDOM in water samples of various origins.
Environmental behavior and mechanistic interactions of biochar-derived dissolved organic matter with microplastics
This review examines how dissolved organic matter released from aging biochar interacts with microplastics in soil and water environments. Researchers found that biochar-derived organic matter can alter the surface properties, mobility, and toxicity of microplastic particles through mechanisms like adsorption and coating. The study highlights these interactions as an important but underappreciated factor in understanding the environmental fate of microplastics.
Molecular-level insights of microplastic-derived soluble organic matter and heavy metal interactions in different environmental occurrences through EEM-PARAFAC and FT-ICR MS
Researchers used advanced spectroscopic techniques to show that dissolved organic matter leached from microplastics forms stable complexes with copper, lead, and cadmium, and found that free-floating microplastic-derived organic matter enhances heavy metal mobility through porous soils, while settled microplastic organic matter retains metals — altering contaminant transport depending on environmental state.
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.
Interactions of microplastics, dissolved organic matter, and coexisting pollutants: Mechanisms, environmental implications, and knowledge gaps
This review examines the three-way interactions between microplastics, dissolved organic matter, and coexisting pollutants, synthesizing how microplastic-DOM adsorption influences contaminant behavior and fate in the environment. The authors identify the dual roles of environmental DOM and microplastic-derived DOM in regulating pollutant adsorption, mobility, and toxicity as a critical knowledge gap.
Identification of microplastics extracted from field soils amended with municipal biosolids
Researchers developed a method for extracting and identifying microplastics from agricultural soils that had been treated with municipal biosolids, a common fertilizer derived from wastewater treatment. They found a variety of plastic polymer types in the soil, confirming that biosolid application is a pathway for microplastic contamination of farmland. The study provides a reliable technique for tracking how microplastics cycle through agricultural environments.
Microplastics InfluenceDissolved Organic Matter TransformationMediated by Microbiomes in Soil Aggregates
A 450-day incubation experiment found that microplastics altered dissolved organic matter transformation in different soil aggregate fractions by modifying microbial community composition and activity, potentially affecting long-term soil carbon dynamics. (Duplicate record of ID 10767.)
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.
Three-dimensional excitation-emission matrix (EEM) fluorescence approach to probing the binding interactions of polystyrene microplastics to bisphenol A
Researchers developed a three-dimensional excitation-emission matrix fluorescence spectroscopy approach to quantify polystyrene microplastic binding to bisphenol A, finding stronger binding under neutral and weakly acidic conditions, increasing binding with temperature, and hydrophobic forces as the dominant mechanism.
Microplastic incorporation into soil aggregates: Insights from two-year field experiments in European agricultural topsoils
Researchers conducted two-year field experiments in European agricultural topsoils comparing microplastic incorporation into soil aggregates from biodegradable and conventional plastic mulch films, finding that soil properties and MP size and shape influence the degree of occlusion, with aggregate embedment potentially protecting MPs from further degradation.
Pollution of agricultural soils by microplastics and their interaction with residual herbicides
Researchers investigated how microplastics interact with three residual herbicides -- diuron, hexazinone, and S-metolachlor -- in agricultural soil matrices, using near-infrared spectroscopy, multispectral analysis, and HPLC to assess sorption and desorption isotherms and evaluate the most effective detection methods for MPs at varying concentrations.
Organic fertilizer facilitates the soil microplastic surface degradation and enriches the diversity of bacterial biofilm
Researchers found that organic fertilizer application facilitates surface degradation of microplastics in soil and enriches the diversity of bacterial biofilms on plastic surfaces, suggesting fertilizer use influences microplastic behavior and fate in agricultural soils.
Characteristics of microplastic-derived dissolved organic matter and its binding with pharmaceuticals unveiled by fluorescence spectroscopy and two-dimensional correlation spectroscopy
Researchers characterized dissolved organic matter released by microplastics during UV-driven aging and examined how it interacts with pharmaceutical compounds. They found that aged polyethylene terephthalate and polystyrene microplastics release fluorescent organic substances that can bind with antibiotics like chloramphenicol and carbamazepine. The study suggests that microplastic degradation byproducts may influence the environmental fate and transport of pharmaceutical pollutants in water.
Phototransformation and photoreactivity of MPs-DOM in aqueous environment: Key role of MPs structure decoded by optical and molecular signatures
Researchers investigated how dissolved organic matter released from microplastics behaves during light-driven transformation in water. They found that organic matter from benzene-containing polymers showed distinctly different photoreactivity compared to matter from polyolefin-based plastics. The study reveals that the chemical structure of the parent microplastic plays a key role in determining how its dissolved byproducts react and generate reactive species in aquatic environments.
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.
Spectroscopic Tracking of the Characteristics of Microplastic-Derived Dissolved Organic Matter
This study used fluorescence spectroscopy to track dissolved organic matter leaching from polyethylene, PVC, and other plastic types over time, finding that different polymers release distinct dissolved organic matter compositions with varying potential to affect aquatic ecosystems.