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61,005 resultsShowing papers similar to Effect of UV exposure and natural aging on the in vitro PAHs bioaccessibility associated with tire wear particles in soil
ClearA critical review of tire wear particles aging and ecotoxicological consequences in terrestrial environments: Insights into environmentally persistent free radicals
This review synthesizes evidence on how tire wear particles age in terrestrial environments and the resulting ecological consequences. Researchers found that UV-induced aging generates environmentally persistent free radicals and reactive oxygen species that amplify soil toxicity, while biodegradation may reduce some risks. The study highlights that characterizing aged tire wear particles remains difficult due to their compositional complexity and calls for standardized analytical methods.
In Vitro Assessment Reveals the Effects of Environmentally Persistent Free Radicals on the Toxicity of Photoaged Tire Wear Particles
Researchers examined how tire wear particles change when exposed to sunlight and found that the aging process generates environmentally persistent free radicals on their surfaces. These radicals significantly increased the toxicity of the particles in laboratory cell tests, causing oxidative stress and DNA damage. The study suggests that weathered tire particles may be more harmful than freshly released ones, adding a new dimension to microplastic pollution concerns.
Assessing the Biodegradability of Tire Tread Particles and Influencing Factors
Researchers tested the biodegradability of tire tread particles under natural and UV-weathered conditions, finding that biodegradation was limited and that UV weathering affected the process. Tire wear particles persist in the environment and contribute to microplastic, chemical, and particulate matter pollution.
UV and thermal degradation of tire derivatives: A comparative study of unused tires, recycled tire chips, and tire and road wear particles
Researchers compared UV and thermal aging behavior of unused tires, recycled tire chips, and tire and road wear particles, finding that material history and particle size influenced degradation rate and benzothiazole leaching—a marker of toxicological concern from tire-derived microplastics.
A study on the aquatic degradation of tire wear particles: Impact of environmental factors and material formulations
This study investigated how tire wear particles degrade in aquatic environments, examining the effects of environmental factors such as UV exposure and water chemistry on particle breakdown. The results showed that aquatic degradation alters tire wear particles in ways that may increase their ecotoxicological risk.
Time-dependent toxicity of tire particles on soil nematodes
Tire wear particles—a major source of microplastics—were found to become increasingly toxic to soil nematodes over time as chemical additives leach out. The time-dependent toxicity means that older, weathered tire particles in soil may pose greater ecological risks than freshly deposited ones.
A study on the aquatic degradation of tire wear particles: Impact of environmental factors and material formulations
This study assessed how tire wear particles degrade in freshwater environments under varying environmental conditions including UV radiation and water chemistry. The degradation process alters particle properties in ways that may increase toxicity to aquatic organisms.
When and how leachate toxicity of tire wear particles peaks: quantifying its dynamics using dose-response analysis
Researchers quantified how leachate toxicity from tire wear particles (TWP) changes with weathering over time, using aging experiments and toxicity bioassays to map the temporal dynamics of toxic compound release. Toxicity peaked during early weathering as soluble compounds leached rapidly, then declined, providing data relevant to risk assessment of TWP in stormwater runoff.
[Aging and Small-sized Particles Release Characteristics of Tire Microplastics in Various Environmental Media].
Researchers simulated the aging of tire microplastics from cars and electric bicycles under UV illumination in both dry and aquatic environments, finding that 30 days of UV exposure caused surface roughening, cracking, and flaking while increasing the carbonyl index and releasing smaller particles, revealing distinct aging and fragmentation behaviors across environmental media.
Effect of vacuum UV and UV-C treatment on degradation and ecotoxicity of tire wear microrubber leachates
Researchers tested UV light treatments on leachates from tire wear particles and found that a combined vacuum UV and UV-C approach effectively broke down toxic compounds including certain PAHs and chemical additives by up to 90%. The treatment also reduced the potential ecological toxicity and genotoxicity of the leachates, suggesting UV technology could help mitigate the environmental impact of tire-derived pollution.
Behavior of compounds leached from tire tread particles under simulated sunlight exposure
This study examined what happens to chemicals that leach from tire tread particles when exposed to sunlight. While sunlight broke down about a third of the leached compounds, it also created new transformation products, some of which may be more harmful than the originals. Since tire particles are a major source of microplastics in waterways, understanding how their chemicals change in sunlight is important for assessing real-world health risks.
Investigation on the adsorption and desorption behaviors of heavy metals by tire wear particles with or without UV ageing processes
UV aging of tire wear particles and polypropylene microplastics increased their surface area and negative charge, enhancing adsorption of cadmium and lead, with tire wear particles showing stronger adsorption changes than PP after aging.
Degradation rates and ageing effects of UV on tyre and road wear particles
Researchers studied how UV light degrades tire and road wear particles, which are considered the largest source of microplastics in the environment. They found that UV exposure caused significant surface cracking and chemical changes in the rubber particles, accelerating their breakdown into smaller fragments. The study provides important data on how quickly these particles degrade outdoors, which helps predict their long-term environmental fate and accumulation.
Degradation rates and ageing effects of UV on tyre and road wear particles
Researchers examined how UV exposure degrades tyre and road wear particles (TRWPs) using accelerated ageing experiments, finding that UV irradiation alters particle physicochemical properties in ways relevant to understanding their long-term environmental fate.
Time-Dependent Toxicity of Tire Particles on Soil Nematodes
Researchers found that tire-wear particle toxicity to soil nematodes was time-dependent, with chemical leaching from the polymer-based materials gradually increasing over contact time, demonstrating the importance of exposure duration in assessing tire particle risks.
Toxic effects of environmentally persistent free radicals (EPFRs) on the surface of tire wear particles on freshwater biofilms: The alleviating role after sewage-incubation-aging
Researchers investigated how tire wear particles affect freshwater biofilms, which are communities of microorganisms that play important roles in aquatic ecosystems. They found that reactive chemical compounds on the surface of fresh tire particles caused significant toxicity, reducing photosynthesis and biological activity in the biofilms. The study suggests that aging in sewage environments reduces the toxicity of tire wear particles by breaking down these harmful surface chemicals.
Aging, characterization and sorption behavior evaluation of tire wear particles for tetracycline in aquatic environment
Researchers aged tire wear particles using UV weathering and chemical oxidation and studied how aging affects their sorption of tetracycline antibiotics, finding that weathering significantly alters surface chemistry and increases the capacity of tire particles to adsorb and potentially transport pharmaceutical contaminants.
Aging increases the particulate- and leachate-induced toxicity of tire wear particles to microalgae.
Researchers found that environmental aging of tire wear particles increases their toxicity to marine microalgae beyond that of fresh particles, with aged particles triggering greater oxidative stress, photosynthesis disruption, and metabolic changes in the algae.
The Influence of Microplastics from Ground Tyres on the Acute, Subchronical Toxicity and Microbial Respiration of Soil
Researchers assessed the toxicity of ground tire microplastics on soil organisms and microbial respiration, finding subchronic phytotoxicity effects that highlight the environmental risks posed by tire wear particles accumulating in soils.
Soil Storage Conditions Alter the Effects of Tire Wear Particles on Microbial Activities in Laboratory Tests
Researchers found that soil storage conditions in the laboratory — including room temperature, low temperature, air drying, and heat drying — significantly alter microbial activity and therefore affect the measured toxicity of tire wear particles on soil microbiomes.
Effects of sunlight exposure on tire tread particle leachates: Chemical composition and toxicity in aquatic systems
Researchers tested how sunlight exposure changes the chemical composition and toxicity of substances leaching from tire tread particles in water. They found that light-exposed tire particle leachates were significantly more toxic to zebrafish embryos, causing developmental abnormalities and reduced survival at lower concentrations. The study suggests that the environmental weathering of tire-derived microplastics can make their chemical releases more hazardous to aquatic life over time.
Assessment of the bioaccessibility of PAHs and other hazardous compounds present in recycled tire rubber employed in synthetic football fields
Researchers assessed the oral bioaccessibility of carcinogenic polycyclic aromatic hydrocarbons from recycled tire crumb rubber used in synthetic football fields, finding 17 of 18 target PAHs present in simulated body fluids with potential health risks for children.
Advanced understanding of the natural forces accelerating aging and release of black microplastics (tire wear particles) based on mechanism and toxicity analysis
Tire wear particles, a major but often overlooked source of microplastics in water, release heavy metals (especially zinc) and toxic organic chemicals as they age under sunlight and heat. The aging process increases the toxicity of these released substances to cells, raising concerns about long-term health effects from this widespread form of microplastic pollution.
Differential cytotoxicity to human cells in vitro of tire wear particles emitted from typical road friction patterns: The dominant role of environmental persistent free radicals
Researchers found that tire wear particles generated from different road friction patterns exhibit varying levels of toxicity to human lung cells in laboratory tests. The study suggests that environmental persistent free radicals formed during tire wear play a dominant role in driving these differences in cytotoxicity, with sliding friction particles showing distinct properties from rolling friction particles.