评估在口罩使用过程中排放的危险物质
Jongmin Park1, Cheonghoon Lee2, Myoungho Lee1
1Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea.
Environment international
|January 26, 2025
概括
这项研究发现,经过认证的一次性口罩过了90%以上的纳米颗粒,而可重复使用的口罩过不到40%. 面具中总挥发性有机化合物 (TVOC) 的高度可以通过在使用前空气化来降低.
科学领域:
- 环境健康 环境健康
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 全球面具使用量激增,引发了人们对面具衍生材料的潜在吸入的担忧.
- 了解在现实的呼吸条件下各种口罩类型的安全性至关重要.
研究的目的:
- 为了评估在模拟呼吸条件下口罩衍生材料的吸入.
- 评估呼吸流速和持续时间如何影响吸入物质的数量.
- 为了比较认证的一次性口罩与非认证的可重复使用口罩的过效率.
主要方法:
- 模拟的吸入实验使用三个非认证的可重复使用的口罩和两个认证的一次性口罩.
- 对纳米粒子,总挥发性有机化合物 (TVOCs),挥发性有机化合物 (VOCs),酸盐和金属元素的分析.
- 使用实时仪器,气色谱-质谱和感应合等离子体质谱.
主要成果:
- 经过认证的一次性口罩表现出高纳米颗粒过效率 (>90%),明显优于未经认证的可重复使用口罩 (<40%).
- 总挥发性有机化合物 (TVOCs) 的初始度高 (4004,000 ppb),随着时间的推移而下降.
- 没有检测到任何目标VOC或金属元素;只在可重复使用的口罩中发现微量甲酸盐.
结论:
- 经过认证的一次性口罩提供了卓越的纳米粒子保护.
- 虽然初始TVOC度可能很高,但危险的口罩衍生物质通常在微量或根本不吸入.
- 建议在使用前对口罩进行透气,以减轻高TVOC度.
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