文章基本信息

标题：Equivalent Diameter of Standard Quartz Dust Used as a Test Aerosol for the Dust Respirator
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作者：Toshihiko MYOJO ; Mitsumasa SUGIMOTO
期刊名称：Industrial Health
印刷版ISSN：0019-8366
电子版ISSN：1880-8026
出版年度：1996
卷号：34
期号：3
页码：217-225
DOI：10.2486/indhealth.34.217
出版社：National Institute of Occupational Safety and Health
摘要：In the standard of the approval test for dust respirator certification, test aerosols are defined as air containing quartz particles of 2μm or smaller¹⁾. However, it is well-known that the filtration efficiency of air filters depends on the size of the test aerosol particles. Alternative test aerosols containing submicron size particles will be studied for use in future approval test of dust respirators. Before searching for alternatives, characterization of currently-used quartz dust, e.g. information about size and electrostatic charge of the aerosol particles, should be determined. The currently-used approval test measures filtration efficiencies with a light scattering photometer. The photometer gives overall aerosol concentration, while Aerodynamic Particle Sizer (APS-33B, TSI Inc., St. Paul, U.S.A.) is able to give the number concentration for each particle size based on the aerodynamic diameter ranging from 0.9 to 2.0μm. In this study, equivalent diameter was defined as the diameter at which penetration has the same value when measured by APS-33B and by light scattering photometer. The equivalent diameter for the ten filter samples for dust respirator was around 1μm, irrespective of neutralization of the test aerosol.
关键词：Test aerosol;Dust respirator;Certification;Quartz dust