| Title | The effect of the significant acid and alkaline environment and oxidation agent on the microplastic integrity |
|---|---|
| ID_Doc | 15432 |
| Authors | Adedapo, O; Boros, N; Dálnoki, AB; Gulyás, M; Sebok, A; Túry, R; Takács, A |
| Title | The effect of the significant acid and alkaline environment and oxidation agent on the microplastic integrity |
| Year | 2024 |
| Published | Discover Sustainability, 5, 1 |
| Abstract | The research examined the ability of each treatment to recover a known quantity of particles and the impact on identifying polymer type using a microscope. By conducting extensive research on the changes induced in the chemical structures and morphologies of microplastics (MPs) there is potential for enhancing the detection and analysis of MPs by incorporating pre-treatment methods in the future. When treating environmental matrices with high organic content, chemical digestion treatment is required to get rid of microplastics and release particles. This type of treatment involves using a range of chemical agents, including acids, bases, and oxidizing agents. Unfortunately, there has been limited research into the chemical resistance of various types of microplastics to these substances. To address this issue, a study was conducted to examine the chemical resistance of four species of microplastics high-density polyethylene (HD-PE), low-density polyethylene (LD-PE), polypropylene (PP) and polyethylene terephthalate (PET) to hydrogen peroxide (H2O2), potassium hydroxide (KOH), nitric acid (HNO3) and acetic acid (CH3COOH). The results showed that acidic and alkaline substances were the most destructive to microplastics, while oxidative reagents resulted in fewer changes to plastic properties. These findings provide valuable insights into the properties of MPs and their response to strong acids, bases and oxidizing agents, which can serve as a reference for future studies on MP pre-treatment. In addition, used as a guideline to update current protocols and ensure that microplastics can be treated without causing damage. The purpose of this study was to investigate the effects of different chemical digestion protocols, including acidic, oxidative, and alkaline reagents, on the physical and chemical properties of microplastics.Before processing and analyzing samples, it is critical to assess chemical digestion protocols to ensure that microplastics are recovered optimally.Based on the observations of different types of microplastics and methods tested, oxidative digestion at room temperature (20-23 degrees C) appears to be the most appropriate for digestion, but it can be destructive over an extended period.Selective processing conditions that eliminate certain materials may result in incomplete assessments of the occurrence, types, sources, and impacts of microplastics.The properties related to digestion can vary depending on the polymer type, so further research is needed on the specific polymer types relevant to each study. |
| https://link.springer.com/content/pdf/10.1007/s43621-024-00200-x.pdf |
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