通过相关性分析和无监督学习,探索微塑料,DOM和DBPs在经过化的PVC管道内同时出现的情况
Thitiwut Maliwan1, Quyen Thi Thuy Do2, Chi Mai Nguyen3
1Department of Civil and Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, 117576, Singapore.
Chemosphere
|January 30, 2025
概括
饮用水释放的微塑料 (MP) 和来自PVC管道的有机物质中的较高含量. 溶解有机物 (DOM) 作为MP和消毒副产品 (DBP) 之间的关键联系.
科学领域:
- 环境科学 环境科学
- 水的化学 水的化学
- 材料科学 材料科学 材料科学
背景情况:
- 饮用水系统面临的挑战包括微塑料 (MP) 生产,塑料管道中的化学液以及消毒副产品 (DBP) 形成.
- 聚乙烯 (PVC) 管道在供水中很常见,这引发了人们对其对水质恶化的贡献的担忧.
研究的目的:
- 调查不同度下PVC管道中MPs和化学液的同时释放情况.
- 评估DBP的后续形成以及溶解有机物 (DOM) 作为中间体的作用.
主要方法:
- 实验室规模的实验使PVC管道暴露在不同度的中.
- 对微塑料 (PVC-MP) 和溶解有机物 (PVC-DOM) 浸出的分析.
- 消毒副产品 (DBP) 的量化.
- 相关性分析和无监督学习 (集群,缩小维度),以了解MP,DOM和DBP之间的关系.
主要成果:
- 在较高度下,PVC-DOM和PVC-MP的显著液发生.
- 在1ppm的中,自然有机物 (NOM) 主导,PVC-DOM和PVC-MP的释放最小.
- 溶解有机物 (DOM),包括NOM和PVC-DOM,与MP和DBP都有很强的相关性,作为一个关键的中间体.
结论:
- 在饮用水配送系统中,DOM在将微塑料和DBP形成联系起至关重要的作用.
- 的度影响了PVC衍生的污染物释放的程度.
- 了解这些复杂的相互作用对于评估饮用水中的风险至关重要.
更多相关视频
05:31Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
Published on: July 28, 2018
15.9K
05:48Sampling, Identification and Characterization of Microplastics Release from Polypropylene Baby Feeding Bottle during Daily Use
Published on: July 24, 2021
5.5K
相关概念视频
Classification and Mechanical Properties of Synthetic Polymers
Synthetic polymers are classified as elastomers, fibers, or plastics based on their crystallinity. Crystallinity, the degree of long-range order in the solid state, influences the mechanical properties (stretching or contracting) of elastomers. Elastomers are flexible polymers that can expand or contract easily upon the application of an external force. They have numerous crosslinks that pull them back into their original shape when stress is removed. Silicones, for instance, are highly elastic...
Microbial Bioremediation of Pesticides
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
Bioplastics
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
