We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Research of photodegradation of phenanthrene, pyrene and chrysene adhering to polyethylene in the water
AI summary Read the abstract
Researchers studied the photodegradation of three polycyclic aromatic hydrocarbons (PAHs) - phenanthrene, pyrene, and chrysene - both dissolved in water and adsorbed onto polyethylene microplastics. The work addresses how microplastics influence the environmental fate and degradation of co-occurring chemical pollutants in aquatic systems.
Polycyclic aromatic hydrocarbons (PAHs) play an important role in the manufacturing industry. However, some PAHs are carcinogenic or mutagenic. Aqueous PAH contamination is widespread. Due to the low solubility in the water, they are likely to be absorbed in plastics. Phenanthrene, pyrene, and chrysene are three PAHs with different structures. In this project, there are two existing states of phenanthrene, pyrene, and chrysene: dissolved in water and adsorb on PE circle. Each existence state of phenanthrene, pyrene, and chrysene was irradiated using a UV lamp for 2 hours respectively. The total mass of irradiated PAHs was detected by GC-MS to identify the photodegradation ratio of each chemical. The sorption of pyrene on the PE circles increases the photodegradation. However, obvious photodegradation ratio cannot be detected on chrysene.
More Papers Like This
Photolysis of polycyclic aromatic hydrocarbons adsorbed on polyethylene microplastics
AI summary Read the abstract
Researchers investigated the photolysis of polycyclic aromatic hydrocarbons adsorbed onto polyethylene microplastics under natural sunlight conditions, finding that PAH concentrations on microplastic surfaces decreased over time due to photodegradation. The study provides first data on the environmental fate of PAH-microplastic complexes under realistic solar irradiation.
Enhancement of photodegradation of polyethylene with adsorbed polycyclic aromatic hydrocarbons under artificial sunlight irradiation
AI summary Read the abstract
Researchers showed that polycyclic aromatic hydrocarbons (PAHs) adsorbed onto polyethylene plastic act as photocatalysts that accelerate the photodegradation of the plastic in marine environments, increasing microplastic production from plastic waste contaminated with hydrophobic organic pollutants.
The adsorption and desorption behaviors of phenanthrene and pyrene onto microplastics in the aquatic environment and digestive fluids
AI summary Read the abstract
This study examined how polycyclic aromatic hydrocarbons (PAHs) like phenanthrene and pyrene adsorb to and desorb from four types of microplastics in both freshwater and simulated digestive fluids. The findings show that PAHs bind strongly to microplastics and can be released under digestive conditions, suggesting that microplastics can deliver organic pollutants to organisms that ingest them.
Microplastic Properties Govern the Photodegradation of Sorbed Anthracene in Aquatic Environments
AI summary Read the abstract
Researchers found that microplastic properties — including polymer type, surface chemistry, and aging state — govern the rate and pathway of solar photodegradation of sorbed anthracene in aquatic environments, with sorption to microplastics altering contaminant photochemical fate compared to free solution.
Laboratory Measurements of Pyrene and Acenaphthene Partition into Microplastics
AI summary Read the abstract
Laboratory experiments measured how quickly and extensively three polycyclic aromatic hydrocarbons (PAHs) — pyrene, phenanthrene, and acenaphthene — sorb onto pellets of five common plastic types. PAH uptake had half-lives of around 10 hours, with polypropylene absorbing the most and PVC absorbing the least. The results confirm that microplastics act as concentration vectors for toxic organic pollutants in the environment, and that weathering and oxidation of plastic surfaces increases their capacity to carry these chemicals into aquatic food chains.
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.