Investigation of three different UV-C irradiation schemes for bacterial decontamination of FFP2 masks to make them reusable

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-04-29 DOI:10.1017/dmp.2024.86

Franziska Vaupel, Ingo Fengler, Nico T. Mutters, Patrick Scheid, Esther Sib, Ruth Weppler, Manuel Döhla

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Abstract

The effect of FFP2 masks for infection prevention is essential in healthcare systems, however, depending on supply chains. Efficient methods to reprocess FFP2 masks may be needed in disasters. Therefore, different UV-C irradiation schemes for bacterial decontamination of used FFP2 masks were investigated. 78 masks were irradiated with UV-light for durations between three and 120 seconds and subsequently analysed for the presence of viable bacteria on the inside. 10 masks served as control group. Irradiation on the inside of the masks reduced bacteria in proportion to the dose, with an almost complete decontamination after 30 seconds. Outside irradiation reduced the quantity of colonies without time dependent effects. Both side irradiation for cumulated 30 seconds or more showed almost complete decontamination. Overall, this study suggests that standardized UV irradiation schemes with treatment to both sides might be an efficient and effective method for FFP2 mask decontamination in times of insufficient supplies.

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研究三种不同的紫外线-C 照射方案，对 FFP2 掩膜进行细菌净化，使其可重复使用

然而，FFP2 口罩在医疗保健系统中预防感染的效果至关重要，这取决于供应链。在灾难中可能需要有效的方法来重新处理 FFP2 口罩。因此，研究人员对不同的紫外线-C 照射方案进行了调查，以对使用过的 FFP2 口罩进行细菌净化。78 个口罩接受紫外线照射，时间从 3 秒到 120 秒不等，随后分析口罩内部是否存在存活细菌。10 个口罩作为对照组。对口罩内部的照射可按剂量比例减少细菌数量，30 秒后几乎可完全消除污染。外部照射可减少菌落数量，但不会产生时间效应。两侧累计照射 30 秒或更长时间后，几乎可以完全消除污染。总之，这项研究表明，在供应不足的情况下，对两侧进行处理的标准化紫外线照射方案可能是一种高效的 FFP2 掩膜净化方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.