来自不同类型的灭火器的颗粒物和per-和多甲基物质 (PFAS) 度
Myoungho Lee1, Perng-Jy Tsai2, Chungsik Yoon3
1Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, 08826, Republic of Korea.
Journal of hazardous materials
|June 1, 2025
概括
灭火器会释放出颗粒物和多和多基物质 (PFAS). 粉末灭火器排放的颗粒最多,而泡类型的PFAS度较高,需要在使用过程中使用防护装备.
科学领域:
- 环境科学 环境科学
- 职业健康 职业健康 职业健康
- 化学工程是化学工程的重要组成部分.
背景情况:
- 被称为"永恒化学品"的Per-和多基基物质 (PFAS) 是持久的环境污染物.
- PFAS用于灭火器,以提高性能.
- 人们对PFAS的潜在健康风险和环境持久性存在担忧.
研究的目的:
- 量化来自灭火器的颗粒和PFAS的排放率和空气分布.
- 为了比较不同类型的粉末,和泡灭火器的排放.
- 评估在使用灭火器时潜在的暴露风险.
主要方法:
- 实时粒子测量使用光学粒子谱仪和扫描移动性粒子测量仪.
- 采集PFAS和野外排放扫描电子显微镜 (FE-SEM) 样本,在2.0 LPM的4小时内进行采集.
- 粉末,和泡灭火器排放的比较分析.
主要成果:
- 总颗粒物排放量:粉末 > 泡 > 哈隆.
- 粉末灭火器中排放率最高 (588.6 ± 9.3 × 104颗粒/分钟).
- 粉末灭火器中排放系数最高 (48.9 ± 1.8 × 102颗粒/g).
- 泡灭火器的总PFAS度很高 (70.2 ± 1.0 mg/m3),超过了垃圾填埋场和电子垃圾场的水平.
结论:
- 灭火器的使用会释放出大量的空气颗粒和PFAS.
- 粉末灭火器是主要的颗粒排放者,而泡灭火器释放大量的PFAS.
- 直接暴露的风险需要在灭火器运行期间使用个人防护设备.
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