We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Influence of chemical aging processes on releasing organic products from microplastics
AI summary Read the abstract
This study examined how chemical aging processes, including UV exposure and oxidation, affect the release of organic compounds from microplastic particles. The results showed that weathered microplastics release different and sometimes more abundant chemical products than pristine particles, increasing their chemical hazard in the environment.
At the end of the 1940s, the production of plastics began on a large scale. Since then, a dynamic increase in their production has been observed. It is associated with a variety of applications and low costs. The negative consequences of the use of polymers and poor disposal are still growing. Microplastic is an important hazard. These are pieces of plastic, the size of which does not exceed 5 mm. Microplastic particles have already been detected all over the world. Increasingly, attention is being paid to their accumulation in the environment. During their stay in ecosystems, they undergo aging processes. Their structure and composition are changing. The washed substances are released into the environment. The aim of the research was to check the effect of artificial aging methods on the leaching of functional groups and changes in the structure of selected polymers. Polystyrene and polyethylene terephthalate were selected for the research. They belong to the most common kind of plastics. For aging, combined methods were used, with irradiation with UV lamp irradiation and hydrogen peroxide. Before and post-aging polymers were analyzed using spectroscopic methods and a microscope. ATR FTIR, Raman confocal microscope and FTIR microscope were used for this purpose. The tests showed leaching of organic products from the samples and the formation of additional bands. The structure of plastics has changed. These changes show a possible degradation path for plastics with a significant environmental impact.
More Papers Like This
Emerging investigator series: microplastic-based leachate formation under UV irradiation: the extent, characteristics, and mechanisms
AI summary Read the abstract
Six common microplastic types were exposed to UV irradiation to characterize surface changes and leachate chemical profiles, finding that UV treatment generated oxidized surface groups and released diverse organic compounds. Leachate composition varied by polymer type, highlighting the role of weathering in generating secondary chemical pollution from microplastics.
A Systematic Study on the Degradation Products Generated from Artificially Aged Microplastics
AI summary Read the abstract
This study systematically tracked the chemical degradation products that form as microplastics age in the environment, finding that weathering generates a range of potentially toxic organic compounds beyond the plastic itself. This suggests the environmental and health risks of microplastics increase as they break down over time.
Releasing characteristics of toxic chemicals from polystyrene microplastics in the aqueous environment during photoaging process
AI summary Read the abstract
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.
Contaminant release from aged microplastic
AI summary Read the abstract
Researchers exposed recycled plastic granules of polyethylene, PVC, and polystyrene to simulated aging conditions including UV radiation and high temperatures. They found that aging significantly increased the rate at which chemical additives leached from the plastic particles into water, with UV exposure having the greatest effect. The study highlights that weathered microplastics in the environment may release harmful chemicals at much higher rates than fresh plastic materials.
Elucidating the characteristic of leachates released from microplastics under different aging conditions: Perspectives of dissolved organic carbon fingerprints and nano-plastics
AI summary Read the abstract
Researchers investigated how different aging conditions affect the release of dissolved organic carbon and nanoplastics from PVC and polystyrene microplastics over 130 days. The study found that UV aging and high temperatures promoted the release of nanoplastics and altered the chemical characteristics of leached substances, with UV-aged treatments producing smaller, rougher nanoparticles that may pose greater ecological risks.
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.