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20 resultsShowing papers similar to Kinetics of plasticiser release and degradation in soils
ClearMicroplastic formation and simultaneous release of phthalic acid esters from residual mulch film in soil through mechanical abrasion
Researchers found that mechanical abrasion of residual mulch film in soil simultaneously generates microplastics and releases phthalic acid esters like DEHP, with film thickness, polymer type, and aging all influencing the rate of microplastic formation and plasticizer release.
Effect of aging on the release of di-(2-ethylhexyl) phthalate from biodegradable and petroleum-based microplastics into soil
This study found that aging processes like UV exposure and chemical oxidation cause microplastics to release more of the plasticizer DEHP, a potential carcinogen, into surrounding soil. Biodegradable PLA plastic released DEHP faster than conventional PVC or polystyrene when aged, suggesting that so-called eco-friendly plastics may not be safer in terms of chemical leaching. The findings are concerning because DEHP is known to disrupt hormones, and this study shows that weathered microplastics in soil could be a greater source of exposure than previously thought.
Leaching of phthalate acid esters from plastic mulch films and their degradation in response to UV irradiation and contrasting soil conditions
Researchers studied how phthalate plasticizers leach from agricultural mulch films and break down under different soil conditions and UV exposure. They found that sunlight accelerates the release of these chemicals from plastic, while soil microbes play a major role in their subsequent degradation. The study highlights how plastic mulch in farming can be a continuous source of potentially harmful chemical additives entering the soil environment.
Plasticisers in the terrestrial environment: sources, occurrence and fate
This review examines the sources, occurrence, and environmental fate of plasticiser chemicals released from plastics into terrestrial environments. Researchers found that both phthalate and newer non-phthalate plasticisers persist in soil, can be taken up by organisms, and may pose emerging risks as industry transitions to replacement chemicals. The study highlights significant knowledge gaps about how these widely used additives behave once released into land-based ecosystems.
[Adsorption and Desorption Behavior of PAEs Plasticizer on PVC and Rubber Particles After Natural Environment Aging].
This study characterized adsorption and desorption behavior of phthalate plasticizers on PVC and rubber microparticles, finding that polymer type, particle aging, and environmental conditions govern plasticizer release rates.
Plasticiser leaching from polyvinyl chloride microplastics and the implications for environmental risk assessment
Researchers measured the leaching of diethylhexyl phthalate (DEHP) and bisphenol A (BPA) from polyvinyl chloride microplastics under simulated marine conditions, finding that both plasticizers leached in a concentration- and time-dependent manner. These findings are important for environmental risk assessments of PVC microplastics, which represent a major fraction of ocean plastic pollution.
The release, degradation, and distribution of PVC microplastic-originated phthalate and non-phthalate plasticizers in sediments
This study examined how chemical additives called plasticizers leach out of PVC microplastics into surrounding sediment. Researchers found that 35-79% of plasticizers were released from the microplastics within 30 days, and specific bacteria in the sediment helped break them down. This matters because PVC is one of the most common plastics, and its microplastic fragments are continuously releasing potentially harmful chemicals into the environment that can enter the food chain.
Aging Dynamics of Polyvinyl Chloride Microplastics in Three Soils with Different Properties
Researchers tracked how PVC microplastics age and degrade over 12 months in three different soil types. They found that soil properties significantly influenced the aging process, with sandy soil promoting more surface oxidation and silty clay causing greater physical fragmentation into smaller particles. The study reveals that microplastics do not remain static in soil but undergo continuous chemical and physical changes that may affect their environmental impact over time.
Dibutyl phthalate release from polyvinyl chloride microplastics: Influence of plastic properties and environmental factors
Researchers investigated how dibutyl phthalate leaches from PVC microplastics into surrounding environments, finding that particle size, temperature, pH, and salinity all significantly influenced the release rate of this plasticizer additive.
Polyvinyl Chloride Microplastics Leach Phthalates into the Aquatic Environment over Decades
Researchers measured how phthalate plasticisers leach from polyvinyl chloride microplastics into water over extended time periods and found that the release process can continue for decades. The study identified the specific mass transfer mechanisms governing leaching rates for three common phthalates. These findings suggest that PVC microplastics represent a long-term source of chemical contamination in aquatic environments, far longer than previously appreciated.
[Occurrence and Characteristics of Macro/Micro-plastics and Phthalates in Soils Under Different Plastic Film Mulching].
Researchers assessed residual characteristics of macroplastics, microplastics, and phthalate plasticizers in agricultural soils under different plastic film mulching treatments over a three-year field experiment, comparing traditional PE film with three types of biodegradable mulch and a no-mulch control. The study examined whether biodegradable film substitution effectively reduces soil plastic and PAE residual pollution.
Effect of particle size and environmental conditions on the release of di(2-ethylhexyl) phthalate from microplastics
Researchers studied how the plasticizer DEHP leaches out of microplastics under different environmental conditions, finding that smaller particles release more of the chemical due to their greater surface area. Higher temperatures, lower pH, and higher salt concentrations all increased the rate of DEHP release. The study suggests that environmental conditions can significantly influence how much potentially harmful chemical is released from microplastic debris in soil and water.
Solving the impact of Phthalate plasticizers in relieving environment pollution
This review examines how phthalate plasticizers—particularly DEHP, DEP, and DBP found in food packaging and cosmetics—enter soil and human bodies, where they disrupt metabolic and reproductive systems and contribute to environmental plastic pollution.
Microplastic acts as a vector for contaminants: the release behavior of dibutyl phthalate from polyvinyl chloride pipe fragments in water phase
Researchers investigated the release behavior of dibutyl phthalate (DBP) from polyvinyl chloride pipe fragments in water, finding that low concentrations were released under varying conditions, confirming that PVC microplastics act as vectors for phthalate contaminants in aquatic environments.
Environmental factors strongly influence the leaching of di(2-ethylhexyl) phthalate from polyvinyl chloride microplastics
Researchers found that environmental conditions like temperature, UV light, salinity, and pH strongly influence how fast the plasticizer DEHP leaches from PVC microplastics into water. Higher temperatures and UV exposure significantly accelerated the release of this endocrine-disrupting chemical. This is important because it means microplastics in warm, sunlit waters may release harmful additives much faster than lab studies under standard conditions would predict.
Effects of chemical and natural ageing on the release of potentially toxic metal additives in commercial PVC microplastics
Researchers aged commercial PVC microplastics under chemical and natural weathering conditions and measured release of potentially toxic trace metals added as stabilizers, finding that weathering significantly increased metal leaching rates, with cadmium and lead among the metals released.
Photoaging enhances the leaching of di(2-ethylhexyl) phthalate and transformation products from polyvinyl chloride microplastics into aquatic environments
This study found that sunlight aging of PVC microplastics accelerates the release of DEHP, a hormone-disrupting plasticizer, by 1.5 times compared to new plastics. The aging process also creates harmful breakdown products like MEHP and phthalic acid that leach into water. Since most microplastics in the environment have been exposed to sunlight, the actual release of toxic chemicals from plastic pollution is likely much higher than estimates based on new plastic suggest.
In-soil degradation of polymer materials waste – A survey of different approaches in relation with environmental impact
This review surveys the in-soil degradation of polymer materials — including natural fibers, synthetic plastics, and composites — examining how environmental factors such as UV radiation, microorganisms, moisture, and temperature drive degradation and influence the environmental impact of plastic waste in terrestrial ecosystems.
Polyvinyl chloride microplastics reduce Cd(II) adsorption and enhance desorption with soil-dependent mechanisms
The study investigated how polyvinyl chloride (PVC) microplastics affect cadmium adsorption and desorption in two different soil types. Researchers found that PVC reduced cadmium adsorption and promoted its release back into the soil, potentially increasing its bioavailability and environmental risk.
Impact of PVC microplastics on soil chemical and microbiological parameters
Researchers found that PVC microplastics altered soil chemical properties and significantly affected microbial community composition and enzymatic activities in agricultural soil, with effects varying over different incubation periods in microcosm experiments.