|
KMID : 1039220220320020163
|
|
Journal of Korean Society of Occupational and Environmental Hygiene
2022 Volume.32 No. 2 p.163 ~ p.171
|
|
|
Fit Performance Comparison Between OPC and CNC Based on Number of Ambient Aerosol Particles
|
|
Seo Hye-Kyung
Jang Ho-Yeong
Shim Su-A
Kim Hui-Ju
Han Don-Hee
|
|
|
Abstract
|
|
|
Objectives: Fit performance may vary depending on the ambient aerosol number and ratio in respective test environment. Although several instrument can measure it, they differ with respect to the measurement principle and the range of ambient aerosols collected to calculate the fit factor.
Methods: In this study, the fit performance between a condensation nuclei counter(CNC) and an optical particle counter(OPC) was compared according to ambient aerosol number concentration, and evaluated consistency. One type respirators(N95 masks) was worn by 50 participants PortaCount®(Pro+ 8038) and MT®(05U) were connected with one probe to one mask, and Fit Factors(FFs) were measured simultaneously.
Results: The interclass correlation coefficient of the fit factor and ambient aerosol number, as measured by the two instrument, was 0.82 and 0.79, respectively, indicating a high consistency level. On the other hand there was a significant correlation between the successful test performance of the OPC instrument and the ambient aerosol number.
Conclusions: The test was passed with the CNC and OPC instruments when the ambient aerosol number was 635?3,332 particles/cm3 and 368?1,976 particles/cm3, respectively. Thus, the ideal ambient aerosol number of particles differed between the two instrument.
|
|
|
KEYWORD
|
|
|
Ambient aerosol number concentration, CNC, Fit test, N95 mask, OPC
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|