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61,005 resultsShowing papers similar to Aging increases the particulate- and leachate-induced toxicity of tire wear particles to microalgae.
ClearToxicity of tire wear particles and the leachates to microorganisms in marine sediments
Researchers investigated the toxicity of tire wear particles and their chemical leachates on bacteria in marine sediments. The study found that aged tire wear particles were more toxic than pristine ones, and that leachates were even more harmful than the particles themselves, with zinc identified as the primary toxicity-causing substance.
Weathering of a micro and nanosized tire particle mixture increases ingestion and growth inhibition in larval fish and juvenile mysid shrimp
Researchers investigated how environmental weathering changes the toxicity of tire particle mixtures to larval fish and juvenile mysid shrimp. The study found that weathered tire particles were more readily ingested and caused greater growth inhibition compared to pristine particles, suggesting that aging in the environment makes tire-derived microplastics more harmful to marine organisms.
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.
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.
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.
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.
A 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.
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.
Effects of tire wear particle on growth, extracellular polymeric substance production and oxidation stress of algae Chlorella vulgaris: Performance and mechanism
This study examined how tire wear particles, a common form of microplastic from roads, affect freshwater algae. Surprisingly, the tire particles actually promoted algae growth at certain concentrations while also causing oxidative stress. The findings suggest that tire-derived microplastics could disrupt the balance of aquatic ecosystems by altering algae behavior, which sits at the base of the food chain.
Tire microplastic particles and warming inhibit physiological functions of the toxic microalga Alexandrium pacificum
Researchers studied how tire-derived microplastic particles affect a toxic marine algae species under normal and warmed water conditions. They found that low concentrations slightly promoted algal growth, while high concentrations inhibited it, and warming made these negative effects worse. The study suggests that the combination of tire microplastics and rising ocean temperatures could disrupt marine ecosystems in compounding ways.
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.
The aging of microplastics exacerbates the damage to photosynthetic performance and bioenergy production in microalgae (Chlorella pyrenoidosa)
Researchers found that aged microplastics are significantly more toxic to freshwater algae than new microplastics, inhibiting growth by up to 45% and causing greater damage to photosynthesis and energy production. Since algae form the base of aquatic food chains, this heightened toxicity from weathered microplastics could cascade through ecosystems and ultimately affect the safety of freshwater resources that humans depend on.
Phenotypic toxicity, oxidative response, and transcriptomic deregulation of the rotifer Brachionus plicatilis exposed to a toxic cocktail of tire-wear particle leachate
Researchers exposed the marine rotifer Brachionus plicatilis to tire-wear particle leachate and observed acute toxicity, oxidative stress, and widespread changes in gene expression related to cellular processes and metabolism. The study suggests that tire-wear particles may pose a greater threat to marine organisms than other microplastics because they release a complex cocktail of nano-sized particles and chemical additives with synergistic toxic effects.
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.
Tire wear particles in different water environments: occurrence, behavior, and biological effects—a review and perspectives
This review examines tire wear particles, a major but often overlooked source of microplastics in water environments. Tire particles release toxic chemicals as they break down in water and can harm aquatic organisms, but most research has focused only on the chemical leachate rather than the particles themselves. Since tire wear contributes a large share of total microplastic pollution, understanding its full impact on water ecosystems and the food chain is important for human health.
Cocktail effects of tire wear particles leachates on diverse biological models: A multilevel analysis
Tire wear particles, a major but underappreciated source of microplastic pollution, leached chemicals into seawater that inhibited algae growth, caused developmental problems in zebrafish embryos, and showed hormone-disrupting effects in cell tests. The study found that water-soluble organic compounds from tires -- not just heavy metals like zinc -- were the primary drivers of toxicity, underscoring the need for better regulation of tire additives.
Comparison of the effects of tire wear particles on the freshwater macrophyte under different exposure scenarios
Researchers compared the effects of tire wear particles on the freshwater macrophyte Lemna minor and other aquatic plants, examining how the complex composition of tire-derived microplastics affects plant growth and physiology. Tire wear particles showed toxicity to aquatic plants at environmentally relevant concentrations, with chemical leachates contributing to the observed effects.
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.
Behind conventional (micro)plastics: An ecotoxicological characterization of aqueous suspensions from End-of-Life Tire particles
Researchers studied the toxic effects of ground-up end-of-life tire particles on zebrafish larvae and found that finer tire powder was more harmful than coarser granules. The smaller particles released chemicals into the water that altered over 100 proteins involved in metabolic processes. The study suggests that recycled tire materials leach toxic substances that could pose risks to aquatic organisms.
Toxicity and intergenerational accumulation effect of tire wear particles and their leachate on Brachionus plicatilis
Researchers studied tire wear particles, a major source of microplastics in oceans, and found they harm tiny marine animals called rotifers across multiple generations. The toxic effects actually got worse over generations, with repeated exposure being more harmful than single-generation exposure. The zinc and chemical additives in tire particles were the main drivers of toxicity, raising concerns about the growing impact of tire-derived microplastics on marine food chains.
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.
Environmental aging and biodegradation of tire wear microplastics in the aquatic environment
Researchers investigated the environmental aging and biodegradation of tire wear microplastics in freshwater over 12 weeks, finding that biofilm formation and chemical changes occurred but complete biodegradation was limited under the studied conditions.
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.
Leachates from tyres induce acute toxicity in fish, influence of tyre type and age
Researchers tested the acute toxicity of leachates from different tire types and ages on fish, finding that tire leachates cause dose-dependent mortality. The toxicity varied with tire composition and age, with newer tire formulations in some cases producing more harmful leachates.