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61,005 resultsShowing papers similar to A Systematic Study on the Degradation Products Generated from Artificially Aged Microplastics
ClearA Systematic Study on the Degradation Products Generated from Artificially Aged Microplastics
This study systematically characterized the degradation products generated from artificially aged microplastics, finding that weathering produces a complex mixture of chemical byproducts beyond the original polymer that deserve attention in environmental risk assessments.
A review on enriched microplastics in environment: From the perspective of their aging impact and associate risk
This review explores what happens to microplastics as they age in the environment over long periods. Researchers found that natural weathering changes the physical and chemical properties of microplastics in ways that may increase their ability to harbor harmful microorganisms and interact with other pollutants, suggesting that aging may actually make microplastic pollution more hazardous over time rather than less.
Degradation of microplastics in the natural environment: A comprehensive review on process, mechanism, influencing factor and leaching behavior
This review examines how microplastics break down in the environment through physical, chemical, and biological processes, and what happens as they degrade. As microplastics age and fragment, they release chemical additives and dissolved organic matter that can be toxic, meaning degrading plastics may actually become more harmful to ecosystems and human health over time.
Innovative overview of the occurrence, aging characteristics, and ecological toxicity of microplastics in environmental media
This review summarizes existing research on where microplastics are found in the environment, how they age and break down, and their toxic effects on living organisms. The paper highlights that as microplastics weather in the environment through sunlight and chemical exposure, they become smaller and can carry other pollutants, potentially increasing their health risks. It also covers emerging strategies for detecting and removing microplastics.
The wheel of time: The environmental dance of aged micro- and nanoplastics and their biological resonance
This review examines how micro- and nanoplastics change as they age in the environment through exposure to sunlight, water, and biological activity. Aged plastics behave differently than fresh ones: they accumulate faster in ecosystems, are more easily taken up by organisms, and can release trapped chemicals as they break down. The findings suggest that the real-world health and environmental risks of microplastics may be greater than lab studies using new, unweathered plastics indicate.
Mechanistic insights into non-negligible toxicity evolution of microplastics under different aging processes
This review examines how different environmental aging processes, such as UV exposure, mechanical wear, and chemical weathering, change the physical and chemical properties of microplastics and alter their toxicity. Researchers found that aged microplastics and the chemicals they leach tend to be more harmful to organisms than fresh particles, causing growth inhibition and genetic damage. The findings suggest that the environmental risks of microplastics may increase significantly as they degrade over time.
Multi-Analytical Approach to Characterize the Degradation of Different Types of Microplastics: Identification and Quantification of Released Organic Compounds
Researchers studied how temperature and light exposure cause five common types of plastic to degrade and release organic chemical compounds. Using a solar simulation chamber, they tracked the breakdown products over time with multiple analytical techniques. The findings help identify which chemicals are released as plastics weather in the environment, which is important for understanding the secondary pollution caused by microplastic degradation.
The environmental effects of microplastics and microplastic derived dissolved organic matter in aquatic environments: A review
This review examines how microplastics interact with other pollutants in water and how aging from sunlight and weathering changes their behavior. As microplastics break down, they release dissolved organic matter and develop surface changes that increase their ability to carry harmful chemicals like pesticides and pharmaceuticals. The findings suggest that weathered microplastics in real-world environments may be more dangerous than fresh plastics used in most lab studies.
Mechanism and characterization of microplastic aging process: A review
This review explains how microplastics age and break down in the environment through sunlight, heat, and chemical reactions, and why this aging process matters. As microplastics weather, their surfaces change in ways that make them better at absorbing toxic pollutants and more harmful to living organisms. Understanding these aging processes is important because the microplastics people encounter in food and water have typically been weathered, meaning they may be more dangerous than the fresh plastics used in most lab studies.
Seeping plastics: Potentially harmful molecular fragments leaching out from microplastics during accelerated ageing in seawater
Researchers conducted accelerated aging experiments on four common plastic types in seawater to study the chemical compounds they release as they degrade. The study found that aging microplastics leach potentially harmful molecular fragments into the surrounding water, demonstrating that microplastics are not inert pollutants but chemically reactive materials that release degradation byproducts over time.
A comprehensive review of microplastic aging: Laboratory simulations, physicochemical properties, adsorption mechanisms, and environmental impacts
This review examines how microplastics change as they age in the environment through exposure to sunlight, water, and chemicals, becoming rougher and more chemically reactive over time. Aged microplastics absorb more pollutants than fresh ones and release harmful additives and free radicals, meaning the microplastics people encounter in the real world may be more dangerous than the pristine particles typically used in lab studies.
Microplastic aging processes: Environmental relevance and analytical implications
Researchers reviewed how microplastics change physically and chemically over time in the environment — a process called 'aging' — and found that standard lab methods for detecting microplastics were mostly developed using fresh, unaged plastics, making it harder to accurately measure real-world contamination. Improved analytical methods that account for aged microplastics are needed for reliable environmental assessment.
How aging microplastics influence heavy metal environmental fate and bioavailability: A systematic review
This systematic review found that environmental aging (UV, weathering) degrades microplastics into smaller particles with higher surface reactivity, increasing their capacity to adsorb heavy metals. These aged microplastic-heavy metal complexes bioaccumulate through the food chain, posing greater ecological and human health risks than either pollutant alone.
[Research Progress on Plastic Aging Processes and Their Environmental Hazards].
This review examines the full dynamic aging process of plastics—from large pieces through microplastics and nanoplastics—including the mechanisms by which additives and soluble compounds are released during degradation. It concludes that while aging mechanisms are similar across plastic sizes, smaller particles carry greater potential for harm due to higher surface area and bioavailability.
Effects of aging on environmental behavior of plastic additives: Migration, leaching, and ecotoxicity
This review examines how the aging and weathering of microplastics in the environment causes chemical additives like plasticizers, flame retardants, and antioxidants to leach out. As microplastics age through UV exposure, heat, and biological activity, they release these additives more readily, increasing the toxic risk to organisms. The findings are important because they show that older, weathered microplastics found in the real world may be more chemically hazardous than fresh plastics used in most lab studies.
Review of the artificially-accelerated aging technology and ecological risk of microplastics
This review examines laboratory methods used to artificially age microplastics to simulate long-term environmental weathering, including UV light, chemical oxidation, heat, and radiation treatments. Researchers found that aging generally increases the environmental risks of microplastics by making them easier for organisms to ingest, enhancing their ability to interact with other pollutants, and triggering the release of chemical additives. The study calls for more realistic aging methods that better simulate the complex conditions microplastics face in natural environments.
Interactions between microplastics and contaminants: A review focusing on the effect of aging process
This review explains how aging and weathering change microplastics in ways that make them interact differently with environmental pollutants like heavy metals and pesticides. Aged microplastics tend to absorb more contaminants than fresh ones, and they can also release those pollutants under certain conditions. This is important for human health because the microplastics we encounter in food and water are typically weathered, meaning they may carry higher loads of toxic substances than laboratory studies suggest.
Insights into the Photoaging Behavior of Microplastics: Environmental Fate and Ecological Risk
This review examines how sunlight ages microplastics in the environment, breaking them into smaller pieces and changing their surface chemistry in ways that make them more toxic and more likely to carry other pollutants. Sun-aged microplastics release dissolved organic matter that can harm aquatic life, and their roughened surfaces attract more bacteria and chemical contaminants. Since most microplastics in nature have been exposed to sunlight, their real-world health risks may be higher than studies using fresh lab plastics suggest.
Impact of Degradation of Polyethylene Particles on Their Cytotoxicity
Researchers found that degradation of polyethylene particles altered their cytotoxicity, with weathered and fragmented PE showing different toxic effects on cells compared to pristine particles, suggesting environmental aging changes microplastic health risks.
Recent advances on microplastic aging: Identification, mechanism, influence factors, and additives release
This review found that environmental aging transforms microplastic surface properties through abrasion, chemical oxidation, UV irradiation, and biodegradation, altering their environmental behavior and ecological risk. Aging also triggers the release of toxic plastic additives, but significant gaps remain between laboratory aging simulations and real-world conditions.
Aging of plastics in aquatic environments: Pathways, environmental behavior, ecological impacts, analyses and quantifications
This review examines how plastics age and degrade in aquatic environments through photo-oxidation, mechanical abrasion, and biodegradation. Researchers discuss the physicochemical changes that occur in aging plastics and the release of potentially harmful oxidation products during degradation. The study suggests that understanding these complex aging dynamics is essential for assessing the environmental and ecological risks posed by microplastics.
Releasing characteristics of toxic chemicals from polystyrene microplastics in the aqueous environment during photoaging process
This study revealed that as polystyrene microplastics age under UV light, they release a growing number of toxic chemicals including organic compounds and heavy metals into surrounding water. The rate of chemical release increased dramatically with aging time, meaning that weathered microplastics in the environment are more chemically hazardous than fresh ones, with implications for water quality and human exposure.
Fragmentation of polypropylene into microplastics promoted by photo-aging; release of metals, toxicity and inhibition of biodegradability
This study showed that when polypropylene plastic ages in sunlight, it fragments into microplastics much faster and releases metal contaminants that were originally added during manufacturing. The resulting particles and chemical leachates were toxic to aquatic organisms and resistant to biodegradation, meaning aged plastics in the environment are more hazardous than fresh ones.
Environmental behaviors of microplastics in aquatic systems: A systematic review on degradation, adsorption, toxicity and biofilm under aging conditions
Aging processes like UV irradiation and physical abrasion alter microplastic surface properties, increasing their capacity to adsorb environmental pollutants while also enhancing leaching of toxic additives like phthalates, collectively amplifying the environmental toxicity of weathered microplastics.