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Papers
20 resultsShowing papers similar to Adsorption of PAHs and PCDD/Fs in Microplastics: A Review
ClearEffects of microplastic sorption on microbial degradation of halogenated polycyclic aromatic hydrocarbons in water
Researchers investigated how microplastics act as carriers for halogenated polycyclic aromatic hydrocarbons (HPAHs) in water and whether this sorption affects microbial degradation of these dioxin-like compounds. They found that microplastic-sorbed HPAHs had reduced bioavailability to degrading bacteria, potentially slowing natural breakdown of these toxic pollutants.
Microplastics, PAHs and biofilms in freshwater
Researchers tested how five common plastic types adsorb polycyclic aromatic hydrocarbons (PAHs) in freshwater and serve as surfaces for microbial biofilm growth. All five plastics were able to bind PAHs and support biofilms, suggesting microplastics can concentrate toxic compounds and harbor bacteria in freshwater environments.
A review of human and animals exposure to polycyclic aromatic hydrocarbons: Health risk and adverse effects, photo-induced toxicity and regulating effect of microplastics
This review examines the health risks of polycyclic aromatic hydrocarbons (PAHs), toxic chemicals from burning fossil fuels, and how microplastics can change their behavior in the environment. Microplastics absorb PAHs on their surface, potentially carrying these cancer-causing chemicals into organisms that ingest the contaminated particles. The combined toxicity of PAHs attached to microplastics may be greater than either pollutant alone, increasing risks to both wildlife and human health.
Close encounters on a micro scale: microplastic sorption of polycyclic aromatic hydrocarbons and their potential effects on associated biofilm communities
Researchers investigated the sorption of polycyclic aromatic hydrocarbons (PAHs) onto microplastics and the potential cascading effects on biofilm communities associated with those microplastics in aquatic environments. They found that evaluating microplastics in isolation underestimates their ecological impact, as co-transported PAHs can alter the composition and function of biofilm communities across different compartments of aquatic ecosystems.
Transport of persistent organic pollutants: Another effect of microplastic pollution?
This review examines how microplastics act as vectors for persistent organic pollutants (POPs) in aquatic environments, covering the physical and chemical factors governing pollutant adsorption and desorption. The authors discuss how interactions between microplastics and POPs vary with polymer type, particle properties, and environmental conditions, and when these interactions may result in toxic effects on aquatic organisms.
Interactions between polyaromatic hydrocarbons and microplastics: Environmental mechanisms and ecotoxicological impacts
This review examines how microplastics interact with polycyclic aromatic hydrocarbons, a class of toxic organic pollutants found throughout the environment. Evidence indicates that microplastics can adsorb these pollutants and alter their availability and toxicity to living organisms, with effects depending on plastic type, pollutant properties, and environmental conditions. The study identifies critical gaps in long-term exposure research and calls for standardized testing methods to better assess these combined risks.
Sorption of benzo(a)pyrene and of a complex mixture of petrogenic polycyclic aromatic hydrocarbons onto polystyrene microplastics
Researchers investigated the sorption of benzo(a)pyrene and a complex mixture of petrogenic polycyclic aromatic hydrocarbons onto polystyrene microplastics in aquatic systems, quantifying how the hydrophobic nature and large surface area of microplastics facilitate PAH accumulation and potential vector transport.
The adsorption and desorption behaviors of phenanthrene and pyrene onto microplastics in the aquatic environment and digestive fluids
This study examined how polycyclic aromatic hydrocarbons (PAHs) like phenanthrene and pyrene adsorb to and desorb from four types of microplastics in both freshwater and simulated digestive fluids. The findings show that PAHs bind strongly to microplastics and can be released under digestive conditions, suggesting that microplastics can deliver organic pollutants to organisms that ingest them.
Microplastic-Toxic Chemical Interaction: A Review Study on Quantified Levels, Mechanism and Implication
This review summarizes quantified levels of heavy metals and hydrophobic organic contaminants sorbed onto microplastics in environmental media, examining adsorption and desorption mechanisms and discussing health implications of ingested microplastics acting as vectors for toxic chemical transport.
Sorption of Pyrene and Fluoranthene onto Common Microplastics Under Freshwater Conditions
Researchers investigated how two common polycyclic aromatic hydrocarbons, pyrene and fluoranthene, bind to six different types of microplastic polymers under freshwater conditions. The study found significant differences in sorption capacity across polymer types, confirming that microplastics can act as vectors for transporting harmful organic pollutants through aquatic environments.
Microplastic-water partitioning of two states halogenated PAHs: Solute and sol
This study examined how halogenated polycyclic aromatic hydrocarbons (PAHs) partition between microplastics and water, finding that plastic type and contaminant chemistry both influence sorption behavior. Understanding how microplastics absorb and transport toxic chemicals is important for assessing the ecological risks they pose.
Sorption, Extraction, and Characterization of Polycyclic Aromatic Hydrocarbons in Environmentally Weathered Microplastics, Particulate Organic Matter, Sediment, and Fish Species in the Lavaca-Matagorda Bay System
Researchers studied how microplastics carry cancer-causing chemicals called polycyclic aromatic hydrocarbons (PAHs) in the Lavaca-Matagorda Bay system in Texas. They found PAHs attached to microplastics, sediment, and in the digestive systems of three commercially important fish species. This shows that microplastics can act as vehicles for toxic chemicals in coastal waters, potentially affecting the safety of fish that people eat.
Exploring the interplay between microplastics, polyciclic aromatic hidrocarbons and biofilms in freshwater
Researchers explored how microplastics interact with polycyclic aromatic hydrocarbons (PAHs) in freshwater, and how both pollutants together form biofilms. The study found that microplastics can act as concentration surfaces for PAHs, potentially amplifying toxic exposure in organisms that ingest plastic particles.
Bioavailability of micro/nanoplastics and their associated polycyclic aromatic hydrocarbons to Daphnia Magna: Role of ingestion and egestion of plastics
Using a passive dosing system that kept dissolved pollutant concentrations constant, researchers showed that microplastics and nanoplastics dramatically increase the toxicity of polycyclic aromatic hydrocarbons (PAHs) to the water flea Daphnia magna: immobilization reached 71-80% when MPs/NPs and PAHs were combined, compared to 24% for PAHs alone. The PAHs adsorbed onto microplastic surfaces were bioavailable and contributed 37-50% of the total toxic effect, acting as a vector that delivers concentrated doses of carcinogenic compounds to organisms that ingest the particles. These findings reveal that the true hazard of microplastics in polluted water is substantially greater than either the particles or the chemical contaminants would cause on their own.
Estimation of the uptake of polycyclic aromatic hydrocarbons desorbed from polyethylene microplastics in the digestive tract of the red seabream (Pagrus major) and mummichog (Fundulus heteroclitus)
In vitro desorption experiments with red seabream and mummichog showed that polycyclic aromatic hydrocarbons with higher octanol-water partition coefficients desorb more slowly from polyethylene microplastics in digestive fluids, suggesting the vector effect of MPs for PAH exposure to fish depends strongly on PAH hydrophobicity.
Effects of microplastics on polycyclic aromatic hydrocarbons migration in Baiyangdian Lake, northern China: Concentrations, sorption–desorption behavior, and multi-phase exchange
Researchers measured microplastics and polycyclic aromatic hydrocarbons (PAHs) in Baiyangdian Lake, China, and studied how microplastics affect the movement of these toxic chemicals between water, sediment, and air. They found that microplastics can adsorb PAHs and alter their transfer between environmental compartments, increasing deposition from air to water and volatilization from sediment to water. The study suggests microplastics may act as carriers that redistribute harmful organic pollutants within lake ecosystems.
Bioaccumulation of polycyclic aromatic hydrocarbons and their human health risks depend on the characteristics of microplastics in marine organisms of Sanggou Bay, China
This study found that the type and characteristics of microplastics present in marine organisms from Sanggou Bay, China, influenced how much of the harmful chemical pollutant PAH (polycyclic aromatic hydrocarbons) accumulated in their tissues. Smaller, more degraded microplastics carried more PAHs into organisms, raising the human health risk from eating contaminated seafood and highlighting that microplastics act as vehicles for other toxic chemicals.
Sorption of PAHs to microplastic and their bioavailability and toxicity to marine copepods under co-exposure conditions
Researchers studied the sorption of two polycyclic aromatic hydrocarbons (PAHs) to polyethylene and polystyrene microplastics and tested their bioavailability to marine copepods under co-exposure conditions. They found that adsorption dominated at lower temperatures and for smaller particles, while absorption was the main process for larger microplastics. The study suggests that PAHs sorbed to microplastics were generally less bioavailable to copepods than the same chemicals dissolved in surrounding water.
Trojan horse effects of microplastics: A mini-review about their role as a vector of organic and inorganic compounds in several matrices
This review examines the 'Trojan horse' role of microplastics as vectors for organic and inorganic pollutants, finding that adsorption follows Freundlich models and that contaminant transfer to organisms is species-specific, with some species showing increased and others decreased toxicant bioavailability.
Mechanistic Insights into PFAS Adsorption on Microplastics: Effects of Contaminant Properties and Water Chemistry
Researchers investigated how two widely detected PFAS compounds, PFOS and PFOA, adsorb onto five common types of microplastics in aquatic environments. The study found that contaminant properties and water chemistry significantly influence adsorption behavior, confirming that microplastics can serve as carriers for PFAS transport in waterways.