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61,005 resultsShowing papers similar to Microplastics as a Modifier of Polycyclic Aromatic Hydrocarbon (PAH) Toxicity: A Review on Context-Dependent Effects Across Organisms
ClearInteractions 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.
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.
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.
Microplastics and PAHs mixed contamination: An in-depth review on the sources, co-occurrence, and fate in marine ecosystems
This review examines how microplastics and PAHs (cancer-causing chemicals from fossil fuel burning) interact in ocean environments, with microplastics acting as carriers that help spread these toxic chemicals through marine ecosystems. This combined contamination matters for human health because both pollutants can accumulate in seafood and potentially reach people through diet.
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.
Modulation of PAH toxicity on the freshwater organism G. roeseli by microparticles
Researchers investigated whether polyethylene and polystyrene microplastics modify the aquatic toxicity of the polycyclic aromatic hydrocarbon phenanthrene in the freshwater amphipod Gammarus roeseli. The study found that microplastics altered the bioavailability and toxicity of phenanthrene, with effects depending on plastic type and exposure conditions.
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.
Potentiation of polycyclic aromatic hydrocarbon uptake in zebrafish embryos by nanoplastics
Nanoplastics present in the environment were found to enhance the uptake of polycyclic aromatic hydrocarbons (PAHs) in zebrafish embryos, suggesting that plastic particles can act as a "Trojan horse" that increases exposure to other toxic pollutants. This combined toxicity effect raises important concerns about the true health risks of microplastic contamination.
Toxicities of Polycyclic Aromatic Hydrocarbons for Aquatic Animals
This review examines the toxicity of polycyclic aromatic hydrocarbons (PAHs) in aquatic animals, including their effects on hormones, tissue damage, and cancer risk. Researchers highlight the growing concern about microplastics acting as carriers for these harmful chemicals in water environments. The study emphasizes the need to address PAH pollution in aquatic ecosystems, particularly as microplastics may increase organisms' exposure to these toxic compounds.
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.
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.
Suspended fine particulate matter (PM2.5), microplastics (MPs), and polycyclic aromatic hydrocarbons (PAHs) in air: Their possible relationships and health implications
Researchers analyzed the relationship between airborne fine particulate matter, microplastics, and toxic chemicals in an urban area near the Persian Gulf. They found microplastics embedded in air pollution particles, suggesting that people may be inhaling microplastics along with other air pollutants, with potential combined health effects that warrant further investigation.
Toxicological interactions of microplastics/nanoplastics and environmental contaminants: Current knowledge and future perspectives
This review examines how the combined presence of micro- and nanoplastics with other environmental contaminants like heavy metals, pesticides, and pharmaceuticals affects toxicity. Researchers found that plastic particles can alter the bioavailability and toxic effects of co-occurring pollutants, sometimes increasing harm to organisms, which complicates environmental risk assessment.
Microplastics Reduce Short-Term Effects of Environmental Contaminants. Part II: Polyethylene Particles Decrease the Effect of Polycyclic Aromatic Hydrocarbons on Microorganisms
This study (Part II of a series) tested whether microplastics reduce the short-term toxic effects of environmental contaminants on aquatic organisms, finding that microplastics can sequester contaminants and reduce their bioavailability and acute toxicity in some exposure scenarios.
Research Progress on The Adsorption and Their Mechanisms of Polycyclic Aromatic Hydrocarbons in Soil by Microplastics
This review examines how microplastic characteristics including polymer type, particle size, density, and aging state influence their adsorption of polycyclic aromatic hydrocarbons (PAHs) in soil, along with how environmental factors such as pH and organic matter modify this interaction. The authors provide a theoretical framework for understanding the combined pollution risk of microplastics and PAHs in terrestrial ecosystems.
Evaluating the effect of different modified microplastics on the availability of polycyclic aromatic hydrocarbons
Researchers investigated how weathering processes alter the ability of polyethylene microplastics to affect the bioavailability of polycyclic aromatic hydrocarbons, finding that etching and UV aging increased surface oxygen groups, specific surface area, and pore volume. Free PAH concentrations decreased with increasing microplastic concentration for most hydrophobic PAHs, and UV aging only slightly altered sorption coefficients compared to pristine microplastics.
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.
Evaluation of Polyciclic Aromatic Hydrocarbons in Water and Microplastics
Researchers measured five cancer-linked PAH compounds in water samples and found that microplastics can bind these chemicals, potentially concentrating them. This suggests microplastics may act as carriers of carcinogenic compounds in drinking water and aquatic environments.
A review on the combined toxicological effects of microplastics and their attached pollutants
Researchers reviewed how microplastics act as carriers for other environmental pollutants — including heavy metals and persistent organic chemicals — and how these combinations produce toxic effects in organisms that are more severe than either contaminant alone. The findings highlight a complex, layered toxicity problem that affects microbes, invertebrates, and vertebrates across marine and terrestrial environments.
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.
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.
Adsorption of PAHs and PCDD/Fs in Microplastics: A Review
This review examines the adsorption of polycyclic aromatic hydrocarbons (PAHs) and dioxins/furans (PCDD/Fs) onto microplastics, highlighting how microplastics can act as vectors transporting these toxic compounds through aquatic environments and into organisms that ingest them.
Effects 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.
How synergistic or antagonistic effects may influence the mutual hazard ranking of chemicals
This study examined how the presence of other environmental agents including microplastics can change how chemical pollutants are ranked for hazard, using chlorinated pesticides as an example. Microplastics can make some chemicals more persistent, bioaccumulative, or toxic through sorption effects, potentially changing which substances pose the greatest risk.