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暴露于火的聚烯作为水生环境中纳米塑料的潜在来源

Hansang Lee¹, Junpyo Park¹, Ji-Won Son¹

¹Department of Environment and Energy Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea.

Journal of hazardous materials

|October 16, 2025

概括

暴露在火中的聚烯会将纳米塑料 (NP) 释放到水中. 增加的火灾暴露,物理冲击和pH水平增加了NP的漏,突出了燃烧塑料废物的风险.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学化学化学

背景情况:

塑料废物的管理不善,特别是来自发展中国家的塑料废物,是全球日益关注的问题.
这些废物的很大一部分暴露在火中,导致其进入自然环境.
了解暴露在火灾中的塑料,特别是纳米塑料 (NP) 形成的环境命运至关重要.

研究的目的:

调查和量化纳米塑料 (NP) 在水生环境中从暴露在火灾中的聚烯 (PP) 出.
为了阐明火灾暴露参数和环境条件对NP释放的影响.

主要方法:

聚烯 (PP) 样品被暴露在火中 (9501150°C),持续时间不同 (1030秒).
暴露于火灾的PP的表征使用了拉曼光谱,XPS,SEM和HRTEM.
使用振动化器模拟NP释放,并通过动态光散射 (DLS) 和总有机碳 (TOC) 进行分析.

主要成果:

纯净的PP在震动24小时后没有释放NP.
暴露在火中30秒的PP释放出显著的NP (1.33 × 10^12 ± 3.64 × 10^11颗粒数kg-1在1小时内).
随着火灾暴露时间,震动强度和pH (59) 的增加,NP释放量增加.

结论:

暴露于火灾中的塑料残留物是水中纳米塑料的强有力的来源.
物理压力和pH等环境因素显著影响NP水.
对于来自火灾 (野火,野火,燃烧) 的塑料废物,迫切需要评估和管理策略.

关键词:

燃烧的塑料塑料被烧毁了管理不善的塑料塑料.纳米塑料的洗过程塑料纳米颗粒塑料纳米粒子水的污染水的污染

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