COVID-19 global pandemic planning: Performance and electret charge of N95 respirators after recommended decontamination methods.
COVID-19 global pandemic planning: Performance and electret charge of N95 respirators after recommended decontamination methods.
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2019冠状病毒病全球大流行规划：推荐去污方法后N95净化器的性能和驻极体电荷。
DOI：
10.1177/1535370220976386
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发表时间：
2021-03
期刊：
影响因子：
--
通讯作者：
Perkins DJ
中科院分区：
文献类型：
--
作者：
Grillet AM;Nemer MB;Storch S;Sanchez AL;Piekos ES;Leonard J;Hurwitz I;Perkins DJ
供医务人员使用的N95呼吸器的短缺促使人们考虑新的保护策略，包括为重复使用和延长使用而进行去污。针对两种常用的外科N95呼吸器(3M™1860和1870+AURA™)，研究了美国疾病控制和预防中心列出的有希望的去污方法(蒸气过氧化氢、湿热、紫外线照射)以及几种被认为是低资源量环境的方法(漂白剂、异丙醇和洗涤剂/肥皂)。虽然N95的过滤性能取决于带静电的驻极体滤层，但去污对这一层的影响在很大程度上是未知的。因此，根据配合度、过滤效率和压降以及(1)驻极体层的表面电荷和(2)带的弹性特性之间的关系来评估净化后的呼吸器的性能。用VHP、湿热、紫外线和漂白剂去污不会降低FIT和过滤性能，也不会降低驻极体电荷。异丙醇和肥皂显著降低了FIT、过滤性能和驻极体电荷。呼吸器上的压力降没有变化。在机械疲劳试验中，观察到N95皮带弹性略有下降，这是一种重复打绒和落纱的模型。美国疾病控制与预防中心推荐的去污方法，包括VHP、湿热和紫外线，在这些测试中不会降低N95呼吸器的适配性或过滤性能。延长使用N95呼吸器可能会降低背带的弹性，但在用户进行密封性检查时，表面密封完整性的损失应该是明显的。NIOSH建议在每次穿上后进行用户密封检查，以检测是否失去了合适的合身。N95呼吸器上不应使用酒精或洗涤剂等会降低驻极体电荷的去污方法。由于驻极体退化造成的N95性能损失对于呼吸器用户来说不明显，或者在负压用户密封性检查期间不明显。
Shortages of N95 respirators for use by medical personnel have driven consideration of novel conservation strategies, including decontamination for reuse and extended use. Decontamination methods listed as promising by the Centers for Disease Control and Prevention (CDC) (vaporous hydrogen peroxide (VHP), wet heat, ultraviolet irradiation (UVI)) and several methods considered for low resource environments (bleach, isopropyl alcohol and detergent/soap) were studied for two commonly used surgical N95 respirators (3M™ 1860 and 1870+ Aura™). Although N95 filtration performance depends on the electrostatically charged electret filtration layer, the impact of decontamination on this layer is largely unexplored. As such, respirator performance following decontamination was assessed based on the fit, filtration efficiency, and pressure drop, along with the relationship between (1) surface charge of the electret layer, and (2) elastic properties of the straps. Decontamination with VHP, wet heat, UVI, and bleach did not degrade fit and filtration performance or electret charge. Isopropyl alcohol and soap significantly degraded fit, filtration performance, and electret charge. Pressure drop across the respirators was unchanged. Modest degradation of N95 strap elasticity was observed in mechanical fatigue testing, a model for repeated donnings and doffings. CDC recommended decontamination methods including VHP, wet heat, and UV light did not degrade N95 respirator fit or filtration performance in these tests. Extended use of N95 respirators may degrade strap elasticity, but a loss of face seal integrity should be apparent during user seal checks. NIOSH recommends performing user seal checks after every donning to detect loss of appropriate fit. Decontamination methods which degrade electret charge such as alcohols or detergents should not be used on N95 respirators. The loss of N95 performance due to electret degradation would not be apparent to a respirator user or evident during a negative pressure user seal check.
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DOI：
10.1109/tei.1986.349096
发表时间：
1986-06-01
期刊：
IEEE TRANSACTIONS ON ELECTRICAL INSULATION
影响因子：
--
作者：
BAUMGARTNER, H;LOFFLER, F;UMHAUER, H
通讯作者：
UMHAUER, H
影响因子：
9.5
作者：
Liu, Jinxin;Zhang, Haifeng;Jin, Xiangyu
通讯作者：
Jin, Xiangyu
DOI：
10.13075/ijomeh.1896.00153
发表时间：
2015
影响因子：
2
作者：
Kim JH;Roberge RJ;Powell JB;Shaffer RE;Ylitalo CM;Sebastian JM
通讯作者：
Sebastian JM
影响因子：
3.7
作者：
Lin TH;Chen CC;Huang SH;Kuo CW;Lai CY;Lin WY
通讯作者：
Lin WY
影响因子：
5.8
作者：
Lin, T. -H.;Tang, F. -C.;Lai, C. -Y.
通讯作者：
Lai, C. -Y.