We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to [Effect of Water Components on Aggregation and Sedimentation of Polystyrene Nanoplastics].
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.
Impact of natural organic matter and inorganic ions on the stabilization of polystyrene micro-particles
Researchers investigated how natural organic matter (NOM) and inorganic ions affect the stabilization and aggregation behavior of polystyrene nanoplastics in water, finding that NOM enhanced colloidal stability while high ionic strength promoted aggregation. The results indicate that water chemistry plays a dominant role in determining nanoplastic mobility and persistence in natural freshwater environments.
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.
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.
Novel measurement method of determining PS nanoplastic concentration via AuNPs aggregation with NaCl
Researchers examined how salinity and dissolved organic matter affect the aggregation and sedimentation of polystyrene nanoplastics in estuarine water, finding that higher salinity and humic acid promoted particle aggregation and accelerated settling. These dynamics influence the fate and bioavailability of nanoplastics in coastal environments.
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.
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.
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 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.
The effects of organic and inorganic colloids on the aggregation and settling of polystyrene (PS) nanoplastics in mimicked ocean temperature conditions
Researchers studied how naturally occurring minerals and biological compounds affect the clumping and sinking behavior of nanoplastics in ocean-like conditions. They found that clay minerals caused up to 70% of nanoplastics to settle out of the water at warm temperatures, but certain biological polymers produced by marine organisms could block this process entirely, keeping the plastics suspended. These findings matter because they help explain why nanoplastics may persist in surface waters rather than sinking to the ocean floor.
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.
Aggregation behavior of polystyrene nanoplastics: Role of surface functional groups and protein and electrolyte variation
Researchers studied how different surface coatings on polystyrene nanoplastics affect their tendency to clump together in water containing proteins and salts. They found that the type of surface functional group significantly changed how the particles aggregated, with proteins and electrolytes playing important roles in the process. The study helps explain how nanoplastics behave and transform as they move through natural water systems.
Assessing the size transformation of nanoplastics in natural water matrices
Researchers studied how nanoplastics change in size when placed in different types of natural water, including freshwater and seawater. They found that factors like pH, salt content, and dissolved organic matter significantly influenced whether the particles clumped together or remained small. The findings are important for understanding how nanoplastics behave in real-world aquatic environments and assessing their potential risks.
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.
Structural Compactness Governs the Environmental Fate of Polystyrene Nanoplastics: Reaggregation Mechanisms in Laboratory-Scale Aquatic Systems.
Scientists studied how tiny plastic particles from polystyrene (smaller than the width of a human hair) behave in water under different conditions like saltiness and water movement. They found that these plastic particles can break apart and stick back together, staying suspended in water for long periods and traveling far distances through rivers and oceans. This matters because it means these microscopic plastics could spread widely through water systems and potentially end up in our drinking water and food chain.
Raman spectra characterization of size-dependent aggregation and dispersion of polystyrene particles in aquatic environments.
This study used Raman spectroscopy to examine how the presence of salt, proteins, and organic matter influences the aggregation and dispersion of polystyrene nanoplastics in water. The findings show that environmental conditions significantly alter nanoplastic behavior and can complicate their detection, which has implications for understanding how nanoplastics move through aquatic environments.
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.
Enhanced sinks of polystyrene nanoplastics (PSNPs) in marine sediment compared to freshwater sediment: Influencing factors and mechanisms
Researchers compared nanoplastic transport through freshwater and marine sediment columns, finding that nanoplastics penetrate far more readily in freshwater (up to 90% breakthrough) than in marine sediments (under 9%), primarily because higher salinity causes aggregation and marine sediments have finer grain sizes that trap particles more effectively.
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.
Photoaging-induced variations in heteroaggregation of nanoplastics and suspended sediments in aquatic environments: A case study on nanopolystyrene
Researchers investigated how photoaging affects the aggregation behavior of polystyrene nanoplastics with suspended sediments in water. They found that 30 days of photoaging retarded aggregation in sodium chloride solutions due to steric hindrance from leached organic matter, but promoted aggregation in calcium chloride solutions through calcium bridging of newly formed oxygen-containing surface groups. The study provides mechanistic insights into how environmental weathering changes the transport and fate of nanoplastics in aquatic systems.
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.
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.
Effect of salinity and humic acid on the aggregation and toxicity of polystyrene nanoplastics with different functional groups and charges
Researchers showed that surface charge governs nanoplastic behavior in water — higher salinity caused negatively charged nanoplastics to aggregate while positively charged particles remained stable — and that humic acid (dissolved organic matter) alleviated toxicity to Daphnia, increasing survival from 15% to nearly 100% in some cases.