A comparison of total inward leakage measured using sodium chloride (NaCl) and corn oil aerosol methods for air-purifying respirators

Journal of Occupational and Environmental Hygiene
Samy RengasamyC C Coffey

Abstract

The International Organization for Standardization (ISO) standard 16900-1:2014 specifies the use of sodium chloride (NaCl) and corn oil aerosols, and sulfur hexafluoride gas for measuring total inward leakage (TIL). However, a comparison of TIL between different agents is lacking. The objective of this study was to measure and compare TIL for respirators using corn oil and NaCl aerosols. TIL was measured with 10 subjects donning two models of filtering facepiece respirators (FFRs) including FFP1, N95, P100, and elastomeric half-mask respirators (ERs) in NaCl and corn oil aerosol test chambers, using continuous sampling methods. After fit testing with a PortaCount (TSI, Inc., St. Paul, MN) using the Occupational Safety and Health Administration (OSHA) protocol, five subjects were tested in the NaCl chamber first and then in the corn oil chamber, while other subjects tested in the reverse order. TIL was measured as a ratio of mass-based aerosol concentrations in-mask to the test chamber, while the subjects performed ISO 16900-1-defined exercises. The concentration of NaCl aerosol was measured using two flame photometers, and corn oil aerosol was measured with one light scattering photometer. The same instruments were used to meas...Continue Reading

References

Oct 26, 1999·American Industrial Hygiene Association Journal·C C CoffeyZ Zhuang
Nov 22, 2005·Journal of Occupational and Environmental Hygiene·Ziqing ZhuangRoland Berry Ann
May 3, 2007·Journal of Occupational and Environmental Hygiene·Matthew G DulingChristopher C Coffey
Mar 7, 2008·Journal of Occupational and Environmental Hygiene·Robert M EningerSergey A Grinshpun
Jul 31, 2008·Journal of Occupational and Environmental Hygiene·Ziqing ZhuangRonald E Shaffer
Aug 25, 2009·The Annals of Occupational Hygiene·Kyungmin Jacob ChoSergey A Grinshpun
Jun 13, 2012·Journal of Aerosol Medicine and Pulmonary Drug Delivery·Chantal Darquenne
Oct 11, 2013·The Annals of Occupational Hygiene·Samy RengasamyJonathan V Szalajda
Jul 17, 2015·The Annals of Occupational Hygiene·Evanly VoSamy Rengasamy
Apr 21, 2016·The Annals of Occupational Hygiene·Shuang GaoSergey A Grinshpun
Jan 1, 2013·Aerosol Science and Technology : the Journal of the American Association for Aerosol Research·Xinjian HeSergey A Grinshpun

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Citations

Aug 21, 2020·PloS One·Sejin ChoiWonjung Kim
Aug 28, 2020·International Journal of Environmental Research and Public Health·José G B DerraikYvonne C Anderson
Jul 29, 2020·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·Benjamin E SteinbergJason T Maynes
Apr 23, 2020·Journal of Exposure Science & Environmental Epidemiology·Sasan FaridiKazem Naddafi
Dec 15, 2020·Journal of Environmental Health Science & Engineering·Anahita FakherpourMozhgan Seif
Mar 28, 2021·European Journal of Clinical Pharmacology·Suzy HuijghebaertGuido Vanham
May 15, 2021·Scientific Reports·Lokesh K PandeyKavita Agarwal
Dec 1, 2020·Chinese Journal of Chemical Engineering·Junwei WuWeihong Xing
Sep 29, 2021·ACS Applied Materials & Interfaces·Chavis A StackhouseAmy C Marschilok
Nov 27, 2021·Advanced Science·Wei DengSteven Wang

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Methods Mentioned

BETA
light scattering
light-scattering

Software Mentioned

SAS
PortaCount
LabVIEW

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