使用紫外线直接照射在暴露限值以下的空气中的病原体的无活化
Gary R Allen1, Kevin J Benner2, William P Bahnfleth3
1Gary Allen Consulting, Inc., Euclid, OH 44119, USA.
概括
直接照射低于暴露限值 (DIBEL) 使用低强度紫外线 (UV) 光来禁用空气中的病原体,如SARS-CoV-2. 这种安全的方法可以实现每小时相当的高空气变化 (ACHeq),补充现有的消毒策略.
科学领域:
- 微生物学和病毒学
- 环境卫生工程 环境卫生工程
- 摄影化学和摄影生物学
背景情况:
- 空气传播的病原体,如SARS-CoV-2,对公共健康构成重大风险.
- 像通风和过这样的传统方法在实现高消毒率方面存在局限性.
- 紫外线 (UV) 辐射是一种已知的杀菌剂,但安全问题限制了其在被占用空间中的应用.
研究的目的:
- 引入和评估一种名为低于暴露限值的直接照射 (DIBEL) 的新方法,用于使空气传播的病原体失活.
- 为了证明低强度紫外线辐射在占用空间中实现高相当每小时空气变化 (ACHeq) 的有效性.
- 评估DIBEL作为传统空气消毒技术的补充或替代策略的潜力.
主要方法:
- 使用高峰波长为275nm的UV-C发光二极管 (LED) 进行直接照射.
- 暴露占用空间的紫外线辐射剂量低于公认的行为性暴露极限 (EL).
- 通过DIBEL方法实现的每小时相当空气变化 (ACHeq) 的测量和计算.
主要成果:
- 在8个小时内,DIBEL使用275nm的UV-CLED实现了SARS-CoV-2的4h-1的ACHeq.
- 该方法连续无活化现有和新引入的病原体,达到99%和99.9%的累积无活化.
- 目前的UV-C DIBEL提供1-10h-1的ACHeq值,与传统方法相比或超过,未来的预测超过100h-1.
结论:
- 低强度紫外线辐射低于暴露限值 (DIBEL) 是一种有效的策略,可以使空气中的病原体失活.
- DIBEL提供高的ACHeq值,为分层消毒策略提供了宝贵的补充,包括上层室紫外线杀菌辐射和过.
- 该方法的简单性,低成本和不引人注目的性质使其成为改善室内空气质量和安全的实用解决方案.
关键词:
在LEDLEDLEDLED中,我们可以看到LED.这就是SARS-CoV-2病毒.紫外线 (UV-C) 是一种行为性 行为性 行为性在空中运输的空中运输.消毒 消毒 消毒 消毒暴露的极限是指暴露在极限的范围内.杀菌剂是一种杀菌剂.室内空气质量 室内空气质量发光二极管是一种发光二极管.病原体是一种病原体.紫外线是一种紫外线.病毒 病毒 病毒 病毒更多相关视频
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