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20 resultsShowing papers similar to Impact of natural organic matter and inorganic ions on the stabilization of polystyrene micro-particles
ClearAggregation and stability of sulfate-modified polystyrene nanoplastics in synthetic and natural waters
Researchers studied how polystyrene nanoplastics behave in different water conditions, examining aggregation and stability under varying pH, salt types, and natural organic matter concentrations. The study found that nanoplastics remain highly stable and suspended in freshwater and even wastewater, but aggregate rapidly and settle in seawater. Natural organic matter was identified as the most significant factor affecting nanoplastic aggregation in waters with high ionic strength.
Mechanistic understanding of the aggregation kinetics of nanoplastics in marine environments: Comparing synthetic and natural water matrices
Researchers investigated aggregation kinetics of polystyrene nanoplastics in marine environments, finding that organic matter type and salt concentration strongly influenced particle stability, with nanoplastics in natural seawater aggregating differently than in synthetic matrices.
Effects of inorganic ions and natural organic matter on the aggregation of nanoplastics
Researchers investigated how inorganic ions and natural organic matter (NOM) influence the aggregation of polystyrene nanoplastics, finding that iron ions uniquely promote aggregation while NOM can either suppress or enhance clumping depending on iron concentration, with electrostatic forces and surface chemistry governing overall particle stability.
Influence of environmental and biological macromolecules on aggregation kinetics of nanoplastics in aquatic systems
Researchers studied how natural macromolecules like humic acid, alginate, and proteins influence the clumping behavior of polystyrene nanoplastics in water. They found that these macromolecules generally stabilized nanoplastics in sodium chloride solutions but caused them to aggregate in calcium chloride solutions, with effects varying by pH. The findings suggest that the environmental fate and transport of nanoplastics in natural waters depends heavily on the surrounding organic molecules and water chemistry.
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.
Impact of electrolyte and natural organic matter characteristics on the aggregation and sedimentation of polystyrene nanoplastics
Researchers examined how dissolved organic matter from different water sources affects the aggregation and sedimentation of polystyrene nanoplastics under varied salt concentrations and temperatures, finding that biopolymers form a protective 'eco-corona' around particles that strongly inhibits long-term sedimentation, while temperature influences aggregation dynamics in complex ways.
[Effect of Water Components on Aggregation and Sedimentation of Polystyrene Nanoplastics].
Researchers investigated how sodium ions (Na+) and natural organic matter (NOM) affect the aggregation and sedimentation of polystyrene nanoplastics (PS-NPs) in six water types including seawater, lake water, and domestic sewage. They found that Na+ concentrations below 80 mmol/L facilitated PS-NP sedimentation, while NOM effects varied by water type, with findings informing the environmental fate and distribution of nanoplastics.
Impact of water chemistry on surface charge and aggregation of polystyrene microspheres suspensions
Researchers investigated how water chemistry factors such as pH, salt concentration, and humic acid affect the surface charge and aggregation behavior of polystyrene microspheres in aqueous solutions. The study found that higher ionic strength and lower pH promoted aggregation, while humic acid stabilized the particles, suggesting that water chemistry strongly influences the environmental fate and transport of microplastics.
Combined effects of photoaging and natural organic matter on the colloidal stability of nanoplastics in aquatic environments
Researchers found that photoaging of polystyrene nanoplastics alters how natural organic matter interacts with their surfaces — reducing humic acid adsorption while increasing protein adsorption — with downstream effects on the nanoplastics' stability and transport 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.
Aggregation kinetics of different surface-modified polystyrene nanoparticles in monovalent and divalent electrolytes
Researchers investigated how surface chemistry and morphology affect the clumping behavior (aggregation kinetics) of polystyrene nanoplastics in water, finding that surface charge and functional groups strongly govern stability, while dissolved organic matter can either inhibit or promote aggregation depending on concentration and whether mono- or divalent ions are present.
Destabilization of photochemical weathered nanoplastics by natural organic matter in monovalent electrolyte solutions
Researchers investigated how photochemical weathering of nanoplastics alters the adsorption of natural organic matter (NOM) and subsequent colloidal stability in monovalent electrolyte solutions, comparing pristine and photoaged polystyrene nanoplastics exposed to Suwannee River NOM. They found that photoaging modified the eco-corona structure formed by NOM adsorption, destabilizing nanoplastic aggregation behavior in aquatic environments.
Heteroaggregation of nanoplastic particles in the presence of inorganic colloids and natural organic matter
Nanoplastics were found to heteroaggregate extensively with inorganic colloids and natural organic matter in both freshwater and marine conditions, altering their size, surface charge, and settling behavior compared to pristine particles. The study demonstrates that nanoplastic behavior in natural waters is dominated by interactions with other environmental constituents rather than the intrinsic properties of the plastic alone.
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.
Stabilization of Fragmental Polystyrene Nanoplastic by Natural Organic Matter: Insight into Mechanisms
This study investigated how natural organic matter stabilizes fragmental polystyrene nanoplastics in aqueous environments, finding that humic and fulvic acid coatings reduce aggregation and enhance colloidal stability, affecting nanoplastic transport and bioavailability.
Aggregation and Deposition Kinetics of Polystyrene Microplastics and Nanoplastics in Aquatic Environment
Researchers measured aggregation and deposition kinetics of 50 nm and 500 nm polystyrene particles under varying ionic strength and pH conditions, finding that both particle sizes aggregated rapidly at elevated salt concentrations and that the smaller nanoplastics were more mobile in column experiments.
Polystyrene nanoplastics are unlikely to aggregate in freshwater bodies
Researchers tested whether polystyrene nanoplastics clump together in realistic freshwater conditions and found that they remained stable and dispersed even after a week. Smaller nanoplastics were slightly less stable than larger ones in calcium-rich water, but in natural surface water, canal water, and tap water, no aggregation occurred. The findings suggest that nanoplastics are likely to remain as individual particles in freshwater bodies, which may increase their potential to spread and interact with organisms.
Influence of protein configuration on aggregation kinetics of nanoplastics in aquatic environment
Researchers investigated how five different proteins with varying structures affect the aggregation behavior of polystyrene nanoplastics in water under different ionic strength and pH conditions. They found that protein type and configuration significantly influenced whether nanoplastics clumped together or remained dispersed, with globular proteins like albumin having different effects than fibrous proteins like collagen. The study suggests that the protein composition of natural waters plays an important role in determining how nanoplastics behave and transport in aquatic environments.
Impact of different modes of adsorption of natural organic matter on the environmental fate of nanoplastics
Natural organic matter in water can stabilize nanoplastics by coating their surfaces and preventing them from clumping together and settling out, with different types of organic matter working through different physical mechanisms. Understanding this stabilization effect is important for predicting how long nanoplastics remain suspended in aquatic environments.
Natural Organic Matter Stabilizes Pristine Nanoplastics but Destabilizes Photochemical Weathered Nanoplastics in Monovalent Electrolyte Solutions
This study examined how sunlight weathering and natural organic matter coatings change the behavior of nanoplastics in water. Researchers found that organic matter stabilizes fresh nanoplastics but actually destabilizes sun-weathered ones, meaning aged nanoplastics in natural waters may clump together and settle differently than expected, affecting where they end up in aquatic environments.