Collection Efficiency Comparison of N95 Respirators Saturated with Artificial Perspiration,ACS Chemical Health & Safety

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Collection Efficiency Comparison of N95 Respirators Saturated with Artificial Perspiration
ACS Chemical Health & Safety ( IF 2.9 ) Pub Date : 2020-09-15 , DOI: 10.1021/acs.chas.0c00054
Diana L Larson ₁

Affiliation

Due to the COVID-19 pandemic, current high demand for N95 filtering facepiece respirators has placed them in short supply. Filtering facepiece respirator wearers have traditionally been instructed to discard their respirator and don a new one should the respirator become saturated with perspiration or damp from exhaled breath. However, today’s shortage may prohibit many N95 respirator wearers from replacing their filtering facepieces at this desired frequency. Previously unpublished research that evaluated the performance of N95 filtering facepiece respirators saturated with artificial perspiration and then dried out can help provide insight into making critical decisions about the change out frequency of N95 respirators that become damp with use. This study concluded that the collection efficiency of filtering facepiece respirators, containing electrostatic filter media, remained statistically unchanged or slightly improved after being dried out following harsh saturation conditions with artificial perspiration. Therefore, respirator wearers can continue to rely on their N95 filtering facepiece respirators to perform as intended.

中文翻译：

充满人工汗液的 N95 口罩收集效率比较

由于 COVID-19 大流行，目前对 N95 过滤式面罩呼吸器的高需求导致其供应短缺。传统上，过滤式面罩呼吸器佩戴者会被要求丢弃呼吸器，并在呼吸器被汗水浸透或呼出的呼吸潮湿时戴上新的呼吸器。然而，目前的短缺可能会阻止许多 N95 呼吸器佩戴者按所需频率更换过滤面罩。此前未发表的研究评估了充满人工汗液然后干燥的 N95 过滤式面罩呼吸器的性能，有助于深入了解如何更换因使用而变湿的 N95 呼吸器的频率。这项研究得出的结论是，含有静电过滤介质的过滤式面罩呼吸器的收集效率在人工汗液的严酷饱和条件下干燥后，在统计上保持不变或略有改善。因此，呼吸器佩戴者可以继续依靠其 N95 过滤面罩呼吸器来发挥预期作用。

更新日期：2020-09-28

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