Ultraviolet-C decontamination of a hospital room: Amount of UV light needed
Ultraviolet-C decontamination of a hospital room: Amount of UV light needed
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DOI：
10.1016/j.burns.2019.10.004
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发表时间：
2020-06-01
期刊：
影响因子：
2.7
通讯作者：
Huss, Fredrik
中科院分区：
文献类型：
--
作者：
Lindblad, Marie;Tano, Eva;Huss, Fredrik
简介：我们的主要目的是使用商用辐射计调查自动 UVC 净化后烧伤 ICU 病房不同区域接收到的紫外线 C (UVC) 剂量。第二个目的是通过辐射计读数验证一次性 UVC 剂量指示器。方法：将一次性指示器和电子辐射计放置在烧伤 ICU 房间的十个不同位置。使用 Tru-D (TM)-UVC 设备对房间进行净化。记录并比较一次性指示器和辐射计读数的颜色变化。实验重复10次。结果：不同区域接收到的UVC辐射在15.9 mJ/cm(2)和1068 mJ/cm(2)之间变化（中位值266 mJ/cm(2)）。距离较短且位于 UVC 设备直接视线内的表面显示出的 UVC 剂量在统计学上显着高于设备阴影中的表面 (p=0.019)。 UVC 剂量指示器的颜色变化与商业辐射计读数相对应。结论：表面接收到的 UVC 辐射量取决于它们在房间中的位置（即距 UVC 发射器的距离）以及是否有任何物体遮挡光线。在这项研究中，我们建议应采用质量控制来确保有足够的 UVC 辐射到达所有表面。 (C) 2019 年作者。由爱思唯尔有限公司出版
Introduction: Our primary aim was to investigate, using a commercial radiometer, the ultraviolet C (UVC) dose received in different areas in a burn ICU ward room after an automated UVC decontamination. The secondary aim was to validate a disposable UVC-dose indicator with the radiometer readings.Methods: Disposable indicators and an electronic radiometer were positioned in ten different positions in a burn ICU room. The room was decontaminated using the Tru-D (TM)-UVC device. Colour changes of the disposable indicators and radiometer readings were noted and compared. Experiment was repeated 10 times.Findings: The UVC radiation received in different areas varied between 15.9 mJ/cm(2) and 1068 mJ/cm(2) (median 266 mJ/cm(2)). Surfaces, at shorter distances and in the direct line of sight of the UVC device showed statistically significant higher UVC doses than surfaces in the shadow of equipment (p=0.019). The UVC-dose indicator's colour change corresponded with the commercially radiometer readings.Conclusions: The amount of UVC radiation that is received in surfaces depends on their locations in the room (ie distance from the UVC emitter) and whether any objects shadow the light. In this study we suggest that quality controls should be used to assure that enough UVC radiation reaches all surfaces. (C) 2019 The Authors. Published by Elsevier Ltd.