東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Respirator and Face Mask Filtration ...

Feye, Christian,

Linked to FindBook

Google Book

Amazon

博客來

Respirator and Face Mask Filtration Efficiency Enhancement Due to Unipolar Ion Emission /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Respirator and Face Mask Filtration Efficiency Enhancement Due to Unipolar Ion Emission // Christian Feye.
Author:	Feye, Christian,
Description:	1 electronic resource (96 pages)
Notes:	Source: Masters Abstracts International, Volume: 85-03.
Contained By:	Masters Abstracts International85-03.
Subject:	Environmental health. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30574537
ISBN:	9798380185073

Respirator and Face Mask Filtration Efficiency Enhancement Due to Unipolar Ion Emission /
Feye, Christian,

Respirator and Face Mask Filtration Efficiency Enhancement Due to Unipolar Ion Emission /Christian Feye. - 1 electronic resource (96 pages)

Source: Masters Abstracts International, Volume: 85-03.

The filtration capabilities of surgical face masks and respirators are crucial in preventing the transmission of airborne pathogens and particles in healthcare settings as well to the general public. Previous studies have shown that the filtration efficiency of face masks can be influenced by various factors, such as the size and composition of aerosols. However, the potential enhancement in filter efficiency through the addition of ions remains largely unexplored.The main goal of the study was to investigate whether the addition of ions to an atmosphere containing aerosols increases filter efficiency of surgical facemasks and N95 respirators. The primary objective was to demonstrate whether aerosol ionization enhancement in surgical face masks results in successfully meeting National Institute of Occupational Safety and Health (NIOSH) standards for the particulate filtration efficiency of N95 respirators.The experimental design involved the comparison of two ASTM-rated face masks, differing in filtration efficiency, with an N95 respirator, where the criteria of success was to investigate whether ionization enhancement increases filter capture efficiency, and a "quality factor" that combines the effect of both filter efficiency and flow resistance. Air ionization was observed with a small, portable air ionizer. An aerosol particle counter was used to collect ambient (upstream) and respirator (downstream) particulate counts in the size range of 0 to 380 nm to determine filter efficiency. A scanning mobility particle sizer was used to measure the overall capture efficiency of the masks in the fine and ultrafine range of particle size range where filter capture efficiency is typically poorest. Pressure drop was measured by using a calibrated pressure voltage reader.

English

ISBN: 9798380185073Subjects--Topical Terms:

543032
Environmental health.
Subjects--Index Terms:

Airborne pathogens

Respirator and Face Mask Filtration Efficiency Enhancement Due to Unipolar Ion Emission /
LDR:03195nmm a22004213i 4500 001 2396188
005 20250522083207.5
006 m o d
007 cr|nu||||||||
008 251215s2023 miu||||||m |||||||eng d
020 $a 9798380185073
035 $a (MiAaPQD)AAI30574537
035 $a AAI30574537
040 $a MiAaPQD $b eng $c MiAaPQD $e rda
100 1 $a Feye, Christian, $e author. $3 3765809
245 1 0 $a Respirator and Face Mask Filtration Efficiency Enhancement Due to Unipolar Ion Emission / $c Christian Feye.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 1 electronic resource (96 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 85-03.
500 $a Advisors: O'Shaughnessy, Patrick Committee members: Peters, Thomas; Anthony, Renee.
502 $b M.S. $c The University of Iowa $d 2023.
520 $a The filtration capabilities of surgical face masks and respirators are crucial in preventing the transmission of airborne pathogens and particles in healthcare settings as well to the general public. Previous studies have shown that the filtration efficiency of face masks can be influenced by various factors, such as the size and composition of aerosols. However, the potential enhancement in filter efficiency through the addition of ions remains largely unexplored.The main goal of the study was to investigate whether the addition of ions to an atmosphere containing aerosols increases filter efficiency of surgical facemasks and N95 respirators. The primary objective was to demonstrate whether aerosol ionization enhancement in surgical face masks results in successfully meeting National Institute of Occupational Safety and Health (NIOSH) standards for the particulate filtration efficiency of N95 respirators.The experimental design involved the comparison of two ASTM-rated face masks, differing in filtration efficiency, with an N95 respirator, where the criteria of success was to investigate whether ionization enhancement increases filter capture efficiency, and a "quality factor" that combines the effect of both filter efficiency and flow resistance. Air ionization was observed with a small, portable air ionizer. An aerosol particle counter was used to collect ambient (upstream) and respirator (downstream) particulate counts in the size range of 0 to 380 nm to determine filter efficiency. A scanning mobility particle sizer was used to measure the overall capture efficiency of the masks in the fine and ultrafine range of particle size range where filter capture efficiency is typically poorest. Pressure drop was measured by using a calibrated pressure voltage reader.
546 $a English
590 $a School code: 0096
650 4 $a Environmental health. $3 543032
653 $a Airborne pathogens
653 $a Healthcare settings
653 $a Occupational health
653 $a Unipolar
653 $a N95 respirators
690 $a 0470
690 $a 0354
710 2 $a The University of Iowa. $b Occupational and Environmental Health. $e degree granting institution. $3 3765810
720 1 $a O'Shaughnessy, Patrick $e degree supervisor.
773 0 $t Masters Abstracts International $g 85-03.
790 $a 0096
791 $a M.S.
792 $a 2023
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30574537