Quantitative assessment of facemask peripheral leakage
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| Titel: | Quantitative assessment of facemask peripheral leakage |
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| Autoren: | Reischl, Uwe, Colby, Conrad, Mijović, Budimir, Goonetilleke, Ravindra S. |
| Quelle: | Sigurnost, Vol 67, Iss 2, Pp 129-134 (2025) Sigurnost : časopis za sigurnost u radnoj i životnoj okolini CODEN SIGUAE Volume 67 Issue 2 |
| Verlagsinformationen: | Zavod za Istrazivanje i Razvoj Sigurnosti, 2025. |
| Publikationsjahr: | 2025 |
| Schlagwörter: | Social sciences (General), H1-99, Industrial safety. Industrial accident prevention, T55-55.3, maske za lice, periferno propuštanje, pojednostavljena metoda procjene, javno zdravlje, facemasks, peripheral leakage, simplified assessment methodology, public health |
| Beschreibung: | Peripheral air leakage affects the ability of a facemask to protect a wearer from exposure to airborne contaminants. Leakage occurs when air bypasses a mask’s filter material and enters or exits the mask through gaps between the mask and the face. A wearer creates a negative pres-sure inside the mask during inhalation and a positive pressure during exhalation. These pres-sure differentials draw air in, or push air out of the mask reducing the effectiveness of a face-mask. An air-pressure measurement chamber was developed to simplify mask air leakage as-sessments. Changes in air pressure and airflow were recorded using a differential manometer and a digital thermoanemometer. Differences between mask airflow and airflow through an open configuration (control) determined the airflow deficit driving peripheral leakage. Four facemask types were tested including a surgical mask, a covid mask, a cotton mask and a N95 mask. The data showed leakage similarities among the four mask types tested. The surgical mask exhibited 50% leakage. The covid mask exhibited 67% leakage while the cotton mask exhibited 63%. The N95 mask exhibited a leakage of 72%. The results of this study confirm previous studies that show high levels of peripheral leakage associated with most facemasks currently in use. The assessment method described in this study provides a new and simplified method to determine such leakages. |
| Publikationsart: | Article Conference object |
| Dateibeschreibung: | application/pdf |
| ISSN: | 1848-6347 0350-6886 |
| DOI: | 10.31306/s.67.2.3 |
| Dokumentencode: | edsair.doi.dedup.....72bff3cf56c068b6f449ceb3fb35f3cc |
| Datenbank: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstract: | Peripheral air leakage affects the ability of a facemask to protect a wearer from exposure to airborne contaminants. Leakage occurs when air bypasses a mask’s filter material and enters or exits the mask through gaps between the mask and the face. A wearer creates a negative pres-sure inside the mask during inhalation and a positive pressure during exhalation. These pres-sure differentials draw air in, or push air out of the mask reducing the effectiveness of a face-mask. An air-pressure measurement chamber was developed to simplify mask air leakage as-sessments. Changes in air pressure and airflow were recorded using a differential manometer and a digital thermoanemometer. Differences between mask airflow and airflow through an open configuration (control) determined the airflow deficit driving peripheral leakage. Four facemask types were tested including a surgical mask, a covid mask, a cotton mask and a N95 mask. The data showed leakage similarities among the four mask types tested. The surgical mask exhibited 50% leakage. The covid mask exhibited 67% leakage while the cotton mask exhibited 63%. The N95 mask exhibited a leakage of 72%. The results of this study confirm previous studies that show high levels of peripheral leakage associated with most facemasks currently in use. The assessment method described in this study provides a new and simplified method to determine such leakages. |
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| ISSN: | 18486347 03506886 |
| DOI: | 10.31306/s.67.2.3 |