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Papers
20 resultsShowing papers similar to [Adsorption Characteristics of Arsenic on UV-aged Polypropylene Microplastics in Aqueous Solution].
ClearAdsorption of As(III) by microplastics coexisting with antibiotics
This study examined how microplastics absorb arsenic, a toxic metal, from water, especially when antibiotics are also present. Smaller and more aged microplastic particles absorbed more arsenic, and environmental factors like pH and dissolved organic matter significantly changed absorption rates. This is relevant to human health because microplastics in contaminated water can concentrate toxic metals like arsenic on their surface and potentially carry them into drinking water or the food chain.
Arsenic adsorption by carboxylate and amino modified polystyrene micro- and nanoplastics: kinetics and mechanisms
Researchers found that functionalized polystyrene micro- and nanoplastics can adsorb arsenic from water, with carboxylate-modified particles showing higher capacity than amino-modified ones, and that salinity and humic acids inhibit adsorption, confirming microplastics can alter arsenic behavior in ecosystems.
Interface adsorption characteristics of microplastics on multiple morphological arsenic compounds
Researchers studied how polystyrene and PET microplastics adsorb different forms of arsenic, a toxic element commonly found in contaminated water. They found that polystyrene had a much higher capacity to bind arsenic compounds than PET, and that the arsenic-loaded microplastics were more toxic to organisms than either pollutant alone. The study highlights that microplastics can act as carriers for toxic heavy metals, amplifying their environmental harm.
Impact of Microplastics on the Fate and Behaviour of Arsenic in the Environment and Their Significance for Drinking Water Supply
This review highlights a largely overlooked problem: microplastics in the environment can adsorb arsenic — one of the world's most dangerous water contaminants — onto their surfaces and potentially transport it to new locations or make it harder to remove during drinking water treatment. The authors call for urgent research into how the presence of microplastics affects the performance of arsenic removal technologies, since both pollutants now co-occur in water sources globally.
Adsorption of arsenite to polystyrene microplastics in the presence of humus
Polystyrene microplastics adsorb arsenic more effectively when humic acid is present in the water, because the organic matter forms a coating on the plastic surface that attracts more arsenic ions. This finding suggests that microplastics can serve as vectors for the toxic metalloid arsenic in natural water environments.
Effect of light irradiation on heavy metal adsorption onto microplastics
Researchers investigated how UV light irradiation of polypropylene microplastics affected their adsorption of lead (Pb) from water, finding that photo-weathering increased surface oxidation and significantly enhanced heavy metal adsorption capacity.
Aging of microplastics increases their adsorption affinity towards organic contaminants
Researchers found that microplastics that have been weathered by sunlight and environmental exposure absorb significantly more chemical pollutants than fresh microplastics, with up to a 4.7-fold increase in adsorption. Ultraviolet exposure changes the surface chemistry of the plastics, making them stickier for contaminants. This matters because most microplastics in nature are weathered, meaning they may be carrying more toxic chemicals into the food chain than laboratory studies using new plastics would suggest.
Change in adsorption behavior of aquatic humic substances on microplastic through biotic and abiotic aging processes
Researchers found that both UV irradiation and microbial aging of polyethylene microplastics significantly altered their surface chemistry, changing how aquatic humic substances adsorb onto the plastic surface and highlighting the importance of weathering state in assessing microplastic-contaminant interactions.
Aging characteristics of polylatic acid microplastics and their adsorption on hydrophilic organic pollutants: mechanistic investigations and theoretical calculations
Researchers characterized how polylactic acid microplastics undergo UV and thermal aging in aquatic environments, finding that aging altered surface chemistry, increased hydrophilicity, and enhanced adsorption of heavy metal pollutants—raising concerns about aged biodegradable plastics as carriers of co-contaminants.
A Comparison of the Adsorption Behavior of Bisphenol A by Microplastics From Different Sources
Lab experiments showed that UV weathering of four common microplastic types — PVC, polypropylene, polyethylene, and polyolefin resin — consistently increased their ability to adsorb the endocrine-disrupting chemical bisphenol A (BPA) by up to 19%, and in some cases changed the fundamental mechanism of adsorption. Acidic conditions and warmer temperatures amplified uptake, while higher plastic doses diluted it. Since weathered microplastics are what actually exist in the environment, these results suggest that aged particles are more potent BPA carriers than fresh plastic, worsening hormonal disruption risks in aquatic ecosystems.
Aging mechanism of microplastics with UV irradiation and its effects on the adsorption of heavy metals
Researchers aged polystyrene microplastics using UV irradiation under three conditions (air, pure water, seawater) and found that aging changed surface chemistry and increased the microplastics' capacity to adsorb heavy metals, with seawater aging producing the most pronounced surface oxidation.
Adsorption behaviour of accelerated UV aged PET and PP microplastics towards Pb(II) under varying pH, temperature, and salinity conditions
UV aging causes PET and PP microplastics to adsorb significantly more lead (Pb) from water, with the extent varying by pH, temperature, and salinity. This means weathered microplastics in the environment may carry greater toxic metal loads than virgin plastic, amplifying their hazard to ecosystems and human health.
Insights into the characteristics, adsorption and desorption behaviors of microplastics aged with or without fulvic acid
Researchers investigated how fulvic acid, a key component of dissolved organic matter, influences the aging, adsorption, and desorption behavior of microplastics under UV radiation, finding that water environmental factors significantly alter the surface properties and contaminant-binding capacity of aged microplastics.
Study on the Adsorption Behavior and Mechanism of Heavy Metals in Aquatic Environment before and after the Aging of Typical Microplastics
Researchers investigated the adsorption behavior and mechanisms of heavy metals by typical microplastics before and after environmental aging, finding that aging significantly alters microplastics' surface properties and capacity to bind metals such as cadmium and lead in aquatic systems.
As(III) adsorption onto different-sized polystyrene microplastic particles and its mechanism
Researchers studied how arsenic adsorbs onto polystyrene microplastic particles of different sizes prepared by ball milling. They found that smaller particles with greater surface area adsorbed more arsenic, with hydrogen bonding and electrostatic attraction driving the process. The study indicates that microplastics in the environment could serve as carriers for arsenic contamination, with adsorption influenced by pH, temperature, and the presence of other ions.
Adsorption behavior of UV aged microplastics on the heavy metals Pb(II) and Cu(II) in aqueous solutions
Researchers examined how UV aging affects the adsorption of lead and copper onto polypropylene, polyethylene, and polystyrene microplastics, finding that aging creates new oxidation functional groups that enhance heavy metal adsorption capacity.
Adsorption of Pb(II) by UV-aged microplastics and cotransport in homogeneous and heterogeneous porous media
Researchers found that microplastics aged by UV sunlight are better at absorbing and carrying lead (a toxic heavy metal) through soil and water than fresh microplastics. The aging process changes the microplastic surface in ways that make it grab onto more lead, potentially spreading this toxic metal further through the environment. This is relevant to human health because aged microplastics in the real world may be transporting more heavy metals into water supplies and food-growing soil than previously thought.
The effect of UV exposure on conventional and degradable microplastics adsorption for Pb (II) in sediment
Researchers studied how UV aging affects the ability of conventional polyethylene and degradable polylactic acid microplastics to adsorb lead ions from aquatic sediment. They found that UV aging increased the surface area and oxygen content of both plastic types, enhancing their capacity to adsorb heavy metals. The study suggests that weathered microplastics in the environment may be more effective carriers of heavy metal contamination than pristine particles.
The adsorption of arsenic on micro- and nano-plastics intensifies the toxic effect on submerged macrophytes
Researchers investigated how arsenic adsorbs onto microplastics of varying types and sizes, and how those particles affect underwater plants. They found that nanoplastics increased arsenic absorption in aquatic macrophytes by 36-47%, causing more severe leaf damage and oxidative stress than either contaminant alone.
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.