[商用口罩在捕获颗粒和空气传播细菌方面的过滤效率]

[Filter efficiency of commercial face masks in capturing particles and airborne bacteria].

作者信息

Minakami K, Obara T, Yamauchi C

出版信息

Jikken Dobutsu. 1986 Jul;35(3):293-7. doi: 10.1538/expanim1978.35.3_293.

DOI:10.1538/expanim1978.35.3_293

Abstract

The filter efficiency of seven kinds of commercial face mask for particles and airborne bacteria was tested in the wash room of a laboratory animal facility. The filter efficiency of the masks was 19 to 50%, as measured by the weight of particles with diameters below 10 micron, 22 to 71% for particles of the 0.3 micron level, 47 to 90% for the 1 micron level, and 90 to 99.6% for the 5 micron level. The filter efficiency for airborne bacteria was 35 to 81%. Among these even masks tested, glasswool surgery masks, three-sheet synthetic fiber masks with and without charcoal, and 28-sheet gauze masks with glass filter showed generally high efficiency, and single-sheet synthetic fiber masks, 18-sheet of gauze masks and gas masks showed low efficiency.

摘要

在一个实验动物设施的洗手间中，测试了七种商用口罩对颗粒物和空气传播细菌的过滤效率。通过测量直径小于10微米颗粒的重量，这些口罩的过滤效率为19%至50%；对于0.3微米级别的颗粒，过滤效率为22%至71%；对于1微米级别，过滤效率为47%至90%；对于5微米级别，过滤效率为90%至99.6%。对空气传播细菌的过滤效率为35%至81%。在这些测试的口罩中，玻璃棉手术口罩、带或不带活性炭的三层合成纤维口罩以及带玻璃过滤器的28层纱布口罩通常显示出较高的效率，而单层合成纤维口罩、18层纱布口罩和防毒面具则显示出较低的效率。