About: Physical Collection Efficiency of Filter Materials for Bacteria and Viruses

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An Entity of Type : schema:ScholarlyArticle, within Data Space : covidontheweb.inria.fr associated with source document(s)

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Physical Collection Efficiency of Filter Materials for Bacteria and Viruses
Creator	Reponen, Tiina Grinshpun, Sergey Burton, Nancy
source	Medline; PMC
abstract	The purpose of this study was to determine the physical collection efficiency of commercially available filters for collecting airborne bacteria, viruses, and other particles in the 10–900 nm (nanometer) size range. Laboratory experiments with various polytetrafluoroethylene (PTFE), polycarbonate (PC) and gelatin filters in conjunction with Button™ Inhalable samplers and three-piece cassettes were undertaken. Both biological and non-biological test aerosols were used: Bacillus atrophaeus, MS2, polystyrene latex (PSL), and sodium chloride (NaCl). The B.atrophaeus endospores had an aerodynamic diameter of 900 nm, whereas MS2 virion particles ranged from 10 to 80 nm. Monodisperse 350 nm PSL particles were used as this size was believed to have the lowest filtration efficiency. NaCl solution (1% weight by volume) was used to create a polydisperse aerosol in the 10–600 nm range. The physical collection efficiency was determined by measuring particle concentrations size-selectively upstream and downstream of the filters. The PTFE and gelatin filters showed excellent collection efficiency (>93%) for all of the test particles. The PC filters showed lower collection efficiency for small particles especially <100 nm. Among the tested filters, the lowest collection efficiencies, 49 and 22%, were observed for 1 and 3-μm pore size PC filters at the particle sizes of 47 and 63 nm, respectively. The results indicate that the effect of filter material is more significant for the size range of single virions than for bacteria. The effect of filter loading was examined by exposing filters to mixtures of PSL particles, which aimed at mimicking typical indoor dust levels and size distributions. A 4-h loading did not cause significant change in the physical collection efficiency of the tested filters.
has issue date	2006-10-14(xsd:dateTime)
bibo:doi	10.1093/annhyg/mel073
bibo:pmid	17041245
has license	no-cc
sha1sum (hex)	ac5b39bd3520a5e2c89bbcae0b588eeb947d925b
schema:url	https://doi.org/10.1093/annhyg/mel073
resource representing a document's title	Physical Collection Efficiency of Filter Materials for Bacteria and Viruses
has PubMed Central identifier	PMC7187796
has PubMed identifier	17041245
schema:publication	Ann Occup Hyg
resource representing a document's body	covid:ac5b39bd3520a5e2c89bbcae0b588eeb947d925b#body_text
is schema:about of	named entity 'polydisperse' named entity 'distributions' named entity 'MS2' named entity 'collection' named entity 'aerosols' named entity 'weight' named entity 'filters' named entity 'observed' named entity 'polytetrafluoroethylene' named entity 'volume' named entity 'size' named entity 'SIGNIFICANT' named entity 'AEROSOL' named entity 'PSL' named entity 'FILTRATION' named entity 'HAVE' named entity 'AVAILABLE' named entity 'DETERMINED BY' named entity 'STUDY' named entity 'DID' named entity 'particles' named entity 'aerosol' named entity 'particles' named entity 'particle' named entity 'measuring' named entity 'aerodynamic diameter' named entity '350 nm' named entity 'gelatin' named entity 'ranged' named entity 'polystyrene' named entity 'cassettes' named entity 'dust' named entity 'commercially' named entity 'mimicking' named entity 'Monodisperse' named entity 'Physical' named entity 'Filter' named entity 'polydisperse' named entity 'latex' named entity 'aerosol' named entity 'virions' named entity 'filter material' named entity 'Bacillus atrophaeus' named entity 'Filter Materials' named entity 'filters' named entity 'particle counter' named entity 'U.S. Army' named entity '8.3' named entity 'PTFE' named entity 'jet nebulizer' named entity 'electrostatic' named entity 'porous media' named entity 'PTFE' named entity 'influenza' named entity 'airborne particles' named entity 'DMA' named entity 'aerosolized bacteria' named entity '35 mm' named entity 'PTFE' named entity 'harmlessness' named entity 'PCR technique' named entity 'nano-scale' named entity 'electrostatic charge' named entity 'PTFE' named entity 'PTFE' named entity 'SKC' named entity 'aerosol' named entity 'nanometer' named entity 'remote control' named entity 'humidity' named entity 'nano-scale' named entity 'significance level' named entity 'PTFE' named entity 'Shoreview' named entity 'equine encephalitis' named entity 'polycarbonate' named entity 'variola major' named entity 'Mettler-Toledo' named entity 'virus'

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