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用紫外线辐射对呼吸器进行消毒
Dianne L Poster1, Matthew Hardwick2, C Cameron Miller1
1National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
概括
紫外线C辐射有效地使N95呼吸器上的OC43冠状病毒失活. 这项研究证实N95面部过呼吸器 (FFR) 在UV-C消毒后的材料完整性和功能,支持安全的重复使用策略.
科学领域:
- 微生物学 微生物学
- 材料科学 材料科学 材料科学
- 公共卫生 公共卫生
背景情况:
- N95面部过呼吸器 (FFR) 是重要的个人防护设备.
- 对N95FFR的消毒和再利用策略对于在公共卫生危机期间管理短缺至关重要.
- 了解紫外线 (UV) 辐射对N95 FFRs的影响对于开发有效的消毒协议至关重要.
研究的目的:
- 评估UV-C辐射对N95FFRsOC43冠状病毒的失活的疗效.
- 在UV-C暴露后评估N95FFR的材料完整性,形状,适合性和功能.
- 提供数据支持使用商业UV-C外消毒和重复使用N95 FFR.
主要方法:
- 使用在N95 FFRs上接种的OC43β冠状病毒来确定病毒无活化.
- 材料完整性通过高分辨率扫描电子显微镜进行评估.
- 形式,适合性和功能通过流动阻力,抗拉强度和颗粒过度测量来评估. 此外,还测量了过器效率和带拉伸应力.
主要成果:
- 紫外线-C辐射证明了在N95FFRs上OC43冠状病毒的有效失活.
- 计量学检查显示,辐射和非辐射N95 FFR材料之间没有明显的物理差异.
- 材料完整性,波器效率和机械性能在辐射后保持不变.
结论:
- 在商业环境中,UV-C辐射是消毒N95 FFR的有效方法.
- 在UV-C处理后,N95 FFR的完整性和功能得到保留,支持安全的重复使用.
- 这些发现支持开发基于紫外线的N95 FFR消毒和再利用策略.
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