期刊
ENVIRONMENTAL TECHNOLOGY & INNOVATION
卷 28, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.eti.2022.102897
关键词
Breathability; Face mask waste; Filtration efficiency; Wearing conditions; Wearing time
资金
- Saint-Etienne Metropole
- IMT (Institut Mines-Telecom)
By simulating different wearing conditions, this study found that some medical masks can be worn for up to 8 hours without significant decrease in their bacterial filtration and breathability performance. Therefore, it is recommended to extend the usage duration of masks to reduce waste and environmental impact.
Wearing a medical mask for longer than the manufacturer's recommended 4 h would reduce the number of masks used and limit their environmental impact. The objective of this study was to determine if a medical mask could be worn for an extended period of time by simulating different wearing conditions. A simulator was developed to reproducibly study various experimental conditions (wearing time, breathing pattern, mask fit, inhaled air humidity) by placing the masks on a 3D replica of the upper airways connected to a respiratory pump. Medical mask performance was determined by assessing normative requirements: bacterial filtration and breathability. No impact on performance was observed for wearing times from 2 h to 8 h. Similarly, when simulating moderate respiratory effort or at rest, various humidity levels in the inhaled air or different fitting conditions, no influence on performance was found. These results imply that none of these experimental conditions appear to have a significant impact on mask performance. In conclusion some medical masks can be used for up to 8 h under different wearing conditions without significant decrease in their bacterial filtration and breathability performance. This recommendation of a possible rise of usage duration would limit mask waste, and thus environmental consequence.(c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据