Počet záznamů: 1

Manikin-Based Size-Resolved Penetrations of CE-marked Filtering Facepiece Respirators.

SYSNO ASEP	0482428
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Manikin-Based Size-Resolved Penetrations of CE-marked Filtering Facepiece Respirators.
Tvůrce(i)	Serfozo, N. (GR) Ondráček, Jakub (UCHP-M)_{RID, ORCID, SAI} Otáhal, P. (CZ) Lazaridis, M. (GR) Ždímal, Vladimír (UCHP-M)_{RID, ORCID, SAI}
Zdroj.dok.	Journal of Occupational and Environmental Hygiene - ISSN 1545-9624 Roč. 14, č. 12 (2017), s. 965-974
Poč.str.	10 s.
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	size-resolved penetration ; manikin-based study ; CE-marked respirator
Vědní obor RIV	CF - Fyzikální chemie a teoretická chemie
Obor OECD	Physical chemistry
Institucionální podpora	UCHP-M - RVO:67985858
UT WOS	000423260600006
EID SCOPUS	85042716091
DOI	10.1080/15459624.2017.1358816
Anotace	The purpose of this manikin-based study was to determine the percentage penetrations of nine CE-marked filtering facepiece respirator models (two samples from each) from filtering classes FFP1, FFP2, and FFP3 and to demonstrate by an independent measurement method the disadvantages and shortcomings of the currently valid European Norm (EN 149:2001) for filtering facepieces. All of the filtering facepieces were evaluated size-selectively in an experimental chamber using charge-neutralized monodisperse ammonium sulfate in 9 sizes ranging from 20–400 nm of count median diameter (CMD) under flowrate of 95 L/min. The results were then compared to the previous study concerning penetrations of 47-mm diameter filters cut from the filtering material of identical filtering facepieces. Although these two experimental methods for measuring penetrations of filtering materials from filtering facepieces are in good agreement (R2 = 0.91), the results show within-respirator variations in all three filtering classes (5.5–19.3% for all FFRs in FFP1, 2.8–8.5% in FFP2, and 0.1–2.8% in FFP3). The most penetrating particle size (MPPS) in this study was found to be in the range of 25–65 nm (CMD), which is in agreement with the range of 30–60 nm found in the previous study. Moreover, 7 out of 9 FFR models reached higher penetrations from manikin-based respirator measurements than during measurements of filters from the respective respirators. Furthermore, penetration levels increased up to ∼50% when the respirator was not sealed around the face of the manikin, indicating that the real protection level provided by these filtering facepieces may be even lower if the respirator does not fit perfectly. Considering that poor filtration efficiency and poor fit may increase under real work conditions, the particle penetration is even higher than was found in this study. Therefore, the CE-marked respirators examined in this study may not be efficient in providing the expected level of protection for workers exposed to nanoparticles.
Pracoviště	Ústav chemických procesů
Kontakt	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Rok sběru	2018

Počet záznamů: 1