We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Effects of pH and Temperature on the Leaching of Di(2-Ethylhexyl) Phthalate and Di-n-butyl Phthalate from Microplastics in Simulated Marine Environment
AI summary Read the abstract
Researchers tested how pH and temperature affect the leaching of phthalate plasticizers (DEHP and DBP) from common microplastics including PE, PET, and PVC in simulated seawater. Higher temperatures (45 degrees C vs 25 degrees C) significantly promoted DBP release, while pH effects varied by polymer type.
This study aims to examine the influences of pH and temperature on the leaching of bis(2-ethylhexyl) (DEHP) and di-n-butyl phthalate (DBP) from microplastics in pseudo-seawater. This study consisted of two parts. In the first part, DEHP and DBP in three common microplastics (polyethylene (PE), polyethylene terephthalate (PET), and polyvinyl chloride (PVC)) were experimentally leached into pseudo-seawater at pH values of 5, 7, and 9 respectively with simulated waves. High-performance liquid chromatography was used to detect the leached DBP and DEHP in the samples. The concentrations of DBP leached from PE, PVC and PET from Day-4 to Day-16 were in the ranges of 0.558 – 0.711 mg/L, 0.518 – 0.760 mg/L and 0.540 – 0.791 mg/L respectively. The effect of pH on the amount of DBP leached could not be concluded with different polymers having different optimal pH of leaching. In the second part, DEHP and DBP in six common microplastics (PE, PET, PVC, plastic wrap, disposable gloves, disposable plastic bag) were leached into pseudo-seawater at 25℃ and 45℃. DBP and DEHP were not detected at 25°C, and a small amount of DBP was detected at 45°C. Higher temperatures promoted the leaching of DBP. This study provides important insight into the leaching behaviors of phthalates from microplastics in the marine environment, which is currently understudied.
More Papers Like This
Plasticiser leaching from polyvinyl chloride microplastics and the implications for environmental risk assessment
AI summary Read the abstract
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.
Environmental factors strongly influence the leaching of di(2-ethylhexyl) phthalate from polyvinyl chloride microplastics
AI summary Read the abstract
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.
Effect of particle size and environmental conditions on the release of di(2-ethylhexyl) phthalate from microplastics
AI summary Read the abstract
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.
Dibutyl phthalate release from polyvinyl chloride microplastics: Influence of plastic properties and environmental factors
AI summary Read the abstract
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.
Effect of temperature and sunlight on the leachability potential of BPA and phthalates from plastic litter under marine conditions
AI summary Read the abstract
Researchers exposed six plastic polymer types to simulated marine conditions (UV and heat) for 140 days and measured the leaching of bisphenol A and phthalate plasticizers, finding that temperature and sunlight substantially increase the release of these endocrine-disrupting chemicals.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.