Size-Resolved Penetration of Filtering Materials from CE-Marked Filtering Facepiece Respirators.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F17%3A00476259" target="_blank" >RIV/67985858:_____/17:00476259 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4209/aaqr.2016.09.0390" target="_blank" >http://dx.doi.org/10.4209/aaqr.2016.09.0390</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4209/aaqr.2016.09.0390" target="_blank" >10.4209/aaqr.2016.09.0390</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Size-Resolved Penetration of Filtering Materials from CE-Marked Filtering Facepiece Respirators.

Popis výsledku v původním jazyce

Throughout the years, the performance of the FFRs has been the topic of extensive studies, resulting mainly in the characterization of aerosol penetration through filters using aerosols that are thought to be similar to those encountered in workplaces. There are limited number of studies in the literature reporting CE-marked respirator performance, and there is a need to perform a penetration evaluation of CE-marked respirators through all 3 filtering classes: FFP1 (80%), FFP2 (94%), and FFP3 (99%). In this study, the percentage penetrations and the most penetrating particle size (MPPS) of 47 mm filters cut out from 13 different CE-marked respirator half masks (2 samples of each FFR) were evaluated size-selectively using nine sizes of charge-neutralized monodisperse aerosol, which ranged from 20 to 400 nm (CMD). Comparison of the penetrations at MPPS from all the examined filters showed that the percentage penetration ranged 3.2-16.3% (FFP1), 2.4-34.3% (FFP2), and 0.02-3.3% (FFP3). Experimental data also revealed that the penetration difference between 2 samples from the same respirator was in most cases up to 6.8%, and between 2 identical respirators up to 2.5%. The MPPS was found to be between 30 and 60 nm (CMD) in all measurements. By comparing the obtained results to the European Standard we conclude that the standard method underestimates particle penetration (especially for particles < 100 nm) due to the usage of non-neutralized, polydisperse test aerosol, detection methods burdened with measurement artifacts, and the assumption that the MPPS is at approximate to 600 nm (MMD) as the criterion for filtering facepieces to pass the penetration test.

Název v anglickém jazyce

Size-Resolved Penetration of Filtering Materials from CE-Marked Filtering Facepiece Respirators.

Popis výsledku anglicky

Throughout the years, the performance of the FFRs has been the topic of extensive studies, resulting mainly in the characterization of aerosol penetration through filters using aerosols that are thought to be similar to those encountered in workplaces. There are limited number of studies in the literature reporting CE-marked respirator performance, and there is a need to perform a penetration evaluation of CE-marked respirators through all 3 filtering classes: FFP1 (80%), FFP2 (94%), and FFP3 (99%). In this study, the percentage penetrations and the most penetrating particle size (MPPS) of 47 mm filters cut out from 13 different CE-marked respirator half masks (2 samples of each FFR) were evaluated size-selectively using nine sizes of charge-neutralized monodisperse aerosol, which ranged from 20 to 400 nm (CMD). Comparison of the penetrations at MPPS from all the examined filters showed that the percentage penetration ranged 3.2-16.3% (FFP1), 2.4-34.3% (FFP2), and 0.02-3.3% (FFP3). Experimental data also revealed that the penetration difference between 2 samples from the same respirator was in most cases up to 6.8%, and between 2 identical respirators up to 2.5%. The MPPS was found to be between 30 and 60 nm (CMD) in all measurements. By comparing the obtained results to the European Standard we conclude that the standard method underestimates particle penetration (especially for particles < 100 nm) due to the usage of non-neutralized, polydisperse test aerosol, detection methods burdened with measurement artifacts, and the assumption that the MPPS is at approximate to 600 nm (MMD) as the criterion for filtering facepieces to pass the penetration test.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Aerosol and Air Quality Research

ISSN

1680-8584

e-ISSN

—

Svazek periodika

17

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

TW - Čínská republika (Tchaj-wan)

Počet stran výsledku

11

Strana od-do

1305-1315

Kód UT WoS článku

000403503700017

EID výsledku v databázi Scopus

2-s2.0-85018430348