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20 resultsShowing papers similar to Effect of Dry Soil Aggregate Size on Microplastic Distribution and Its Implications for Microplastic Emissions Induced by Wind Erosion
ClearHeterogeneous aggregation of microplastics and mineral particles in aquatic environments: Effects of surface functional groups, pH, and electrolytes
Researchers studied how microplastics clump together with soil and rock minerals in water, finding that positively charged minerals bound to plastic particles nearly three times more effectively than clay minerals, and that low pH and calcium ions dramatically accelerated aggregation. Understanding these dynamics helps predict where microplastics will settle or stay suspended in rivers, lakes, and aquifers.
Acute toxicity of nanoplastics on Daphnia and Gammarus neonates: Effects of surface charge, heteroaggregation, and water properties
Researchers examined nanoplastic toxicity on crustacean neonates and found that smaller particles (20-40 nm) were more toxic, with surface charge and aggregation behavior being the primary factors influencing toxicity depending on species and water conditions.
Interaction, Adhesion and Aggregation of Microplastic/Nanoplastic Particles: Effects of Plastic Polymer Type
This review examines how polymer type, particle size, shape, pH, ionic strength, and salt composition influence the interaction, adhesion, and aggregation behavior of microplastics and nanoplastics in aquatic and soil environments. The paper synthesizes findings on homoaggregation and heteroaggregation with natural and engineered nanoparticles, highlighting how aggregation affects particle transport and environmental fate.
Combined effects of particle size and humic acid corona on the aggregation kinetics of nanoplastics in aquatic environments
Researchers examined how humic acid coating and nanoplastic particle size interact to govern aggregation behavior, finding that while humic acid generally inhibits clumping in freshwater, calcium ions cause the coating on larger particles (100–200 nm) to promote aggregation through bridging — a size-dependent mechanism not seen in the smallest 40 nm particles tested.
Effect of the Surface Hydrophobicity–Morphology–Functionality of Nanoplastics on Their Homoaggregation in Seawater
Researchers found that nanoplastic surface hydrophobicity, morphology, and functional chemistry strongly govern homoaggregation behavior in aquatic environments, with more hydrophobic and functionalized particles forming larger, faster-settling aggregates that alter their environmental fate and bioavailability.
Aggregation in experimental studies with microparticles: Experimental settings change particle size distribution during exposure
Researchers investigated how experimental conditions including exposure duration, particle concentration, organic carbon content, and test organism presence affect microplastic aggregation in ecotoxicological experiments, finding that particle size distribution changed substantially during experiments. Failure to account for aggregation during exposure leads to inconsistent and unreliable toxicity results across studies.
Effects of size and surface charge on the sedimentation of nanoplastics in freshwater
Researchers investigated how size and surface charge of polystyrene nanoplastics affect their sedimentation behavior in freshwater, finding that both properties significantly influence aggregation dynamics and settling rates, with implications for predicting nanoplastic fate in aquatic environments.
Understanding the stability of nanoplastics in aqueous environments: effect of ionic strength, temperature, dissolved organic matter, clay, and heavy metals
This study examined how environmental factors including ionic strength, temperature, dissolved organic matter, and clay affect the stability and aggregation of nanoplastics in water, finding that these conditions significantly influence particle behavior. Understanding nanoplastic stability is critical for predicting their fate, transport, and bioavailability in aquatic systems.
Aquatic behavior and toxicity of polystyrene nanoplastic particles with different functional groups: Complex roles of pH, dissolved organic carbon and divalent cations
Researchers systematically examined how water chemistry — pH, dissolved organic carbon, and divalent calcium and magnesium ions — affects the stability, aggregation, and toxicity of polystyrene nanoplastics with different surface functional groups, finding that complex solution conditions enhanced aggregation through cation bridging and increased oxidative gut damage in Daphnia magna.
Weathering pathways differentially affect colloidal stability of nanoplastics
This study showed that different environmental weathering pathways — UV exposure, mechanical abrasion, and chemical aging — differentially affect nanoplastic aggregation behavior, with implications for how their colloidal stability and environmental transport should be assessed in risk evaluations.
Environmental factors-mediated behavior of microplastics and nanoplastics in water: A review
This review examines how environmental conditions such as pH, salt levels, and organic matter influence how microplastics and nanoplastics behave in water. The study found that these factors significantly affect whether tiny plastic particles clump together or stay dispersed, which in turn determines how far they travel and how available they are for organisms to ingest.
Heteroaggregation kinetics of nanoplastics and soot nanoparticles in aquatic environments
Researchers examined how polystyrene nanoplastics and soot particles aggregate together in aquatic environments, finding that particle ratio, salinity, pH, and dissolved organic matter all influence clumping rates — with calcium ions dramatically accelerating aggregation and potentially altering nanoplastic transport in coastal and marine waters.
Nanoplastics Aggregation in Environment: Analytical Methods and Environmental Implications
This review examines how nanoplastics aggregate in the environment—clumping together or attaching to other particles—and how this affects their analysis and ecological impact. Aggregation changes how nanoplastics move through water and accumulate in organisms, complicating risk assessment for these extremely small plastic particles.
The association of microplastics with water-stable aggregates formed under controlled conditions
Researchers compiled data from a controlled study examining the association between microplastics and water-stable soil aggregates, providing the underlying dataset for the linked publication on microplastic-aggregate interactions.
Aggregation kinetics of microplastics in aquatic environment: Complex roles of electrolytes, pH, and natural organic matter
Researchers found that the aggregation behavior of polystyrene microplastics in water was strongly influenced by pH, ionic strength, and the presence of natural organic matter, with divalent cations like calcium and magnesium promoting aggregation. Understanding aggregation kinetics is critical for predicting how microplastics partition between suspended and settled states in natural water bodies.
Microplastics and Nanoplastics in Aquatic Environments: Aggregation, Deposition, and Enhanced Contaminant Transport
This review examined the aggregation, deposition, and transport of microplastics and nanoplastics in aquatic environments, synthesizing how particle properties and water chemistry govern their fate and mobility in rivers, lakes, and oceans.
Soil Solution Promotes Nanoplastic Aggregation via Eco-corona Formation and Hetero-aggregation
Scientists found that tiny plastic particles in soil clump together into bigger chunks when they interact with natural soil chemicals and microbes. This clumping could affect how these plastic particles move through soil and potentially into our food and water supply. Understanding how plastic pollution behaves in soil helps us better predict human exposure to these particles.
The environmental fate of nanoplastics: What we know and what we need to know about aggregation
Researchers systematically analyzed experimental studies on nanoplastic aggregation behavior, evaluating the environmental relevance of 377 solution chemistries and 163 particle models. The study found that commonly used polymer latex spheres do not accurately represent real-world nanoplastics, and suggests that incidentally produced nanoplastics may be more sensitive to heteroaggregation than previously expected.
Influence of polymer age and soil aggregation on microplastic transport in soil erosion events
Researchers compared the transport rates of pristine and aged polystyrene microplastics during simulated rainfall events and quantified their incorporation into soil aggregates across multiple wet-dry cycles, providing the first empirical data on how surface roughness and hydrophobicity changes from weathering affect MP mobility in soil erosion.
Stability and dispersibility of microplastics in experimental exposure medium and detection of nanoplastic fractions by SMLS, SAXS, Raman microscopy, and SEM
Researchers investigated the stability and dispersibility of microplastics in laboratory exposure media, assessing how particle aggregation affects experimental dosing and relevance to ecological risk assessment. Microplastic behavior in test media differed substantially from predicted behavior based on particle properties alone, with implications for toxicity test design.