Performance of Conventional and Antimicrobial-Treated Filtering Facepiece Respirators Challenged with Biological Aerosols.
This study evaluated the filtration performance of four commercially available models of National Institute of Occupational Safety and Health (NIOSH)-certified filtering facepiece respirators (FFR) against both biological and inert aerosols at a flow rate of 85 L/min. Conventional N95 and P100 FFRs...
| Publicado en: | Journal of Occupational & Environmental Hygiene Vol. 9; no. 2; pp. 69 - 81 |
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| Autores principales: | , , , , , |
| Formato: | equations & formulas research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Feb2012
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104561507&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104561507 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15459624 V1L jtl: Journal of Occupational & Environmental Hygiene issn: 15459624 maglogo: Y pubinfo: dt: Feb2012 vid: 9 iid: 2 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 104561507 74688753 10.1080/15459624.2011.640273 NLM22206440 104561507 ppf: 69 ppct: 12 formats: fmt: @attributes: type: P tig: atl: Performance of Conventional and Antimicrobial-Treated Filtering Facepiece Respirators Challenged with Biological Aerosols. aug: au: Lore, Michael B. Sebastian, John M. Brown, TeAnne L. Viner, Andrew S. McCullough, Nicole V. Hinrichs, Steven H. affil: Department of Pathology and Microbiology, University of Nebraska Medical Center sug: subj: Occupational Exposure Prevention and Control Respiratory Protective Devices Evaluation Face Antiinfective Agents Human Florida National Institute for Occupational Safety and Health Respiratory Protective Devices Classification Aerosols Classification Filtration Evaluation Analysis of Variance Funding Source ab: This study evaluated the filtration performance of four commercially available models of National Institute of Occupational Safety and Health (NIOSH)-certified filtering facepiece respirators (FFR) against both biological and inert aerosols at a flow rate of 85 L/min. Conventional N95 and P100 FFRs and two antimicrobial (AM)-treated FFRs (an N95 and a P95, both with iodine-based AM treatments) were tested for both physical penetration (PENP) and viable penetration (PENV) with three different bioaerosols, including MS2 bacteriophage virus, and the spores and vegetative cells of Bacillus atrophaeus bacteria, in addition to inert sodium chloride (NaCl) aerosol. For each FFR model, the PENP measured with NaCl was predictive of its MS2 PENP, and it was observed that spores and bacteria aerosols were also filtered similarly to the inert aerosol. For both conventional FFRs, up to a 1-log reduction in PENV in comparison with PENP was observed and attributed to the experimental variability of the test system. For both models of AM-FFRs, no statistically significant differences between PENV and PENP for any of the three different bioaerosol challenges were observed. Thus, no bioaerosol filtration enhancement over the conventional FFRs was detected for either iodine-based AM-FFR. In the absence of any standardized test methods, we recommend that future studies evaluating the filtration performance of AM-treated FFRs incorporate the experimental best practices described herein. [Supplementary materials are available for this article. Go to the publisher's online edition of the Journal of Occupational and Environmental Hygiene for the following free supplemental resource: a pdf file containing I. Review of Research on Antimicrobial-Treated Respirators, and II. Microorganism Propagation, Plating, and Enumeration Protocols.] pubtype: Academic Journal doctype: equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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