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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Occup+Environ+Hyg
2015 ; 12
(6
): 415-20
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
Protection of firefighters against combustion aerosol particles: simulated
workplace protection factor of a half-mask respirator (pilot study)
#MMPMID25625543
Dietrich J
; Yermakov M
; Reponen T
; Kulkarni P
; Qi C
; Grinshpun SA
J Occup Environ Hyg
2015[]; 12
(6
): 415-20
PMID25625543
show ga
The present pilot study investigated the penetration of ultrafine particles
originated by combustion of different materials into elastomeric half-mask
respirators equipped with two P100 filters. We determined the Simulated Workplace
Protection Factor (SWPF) for 11 firefighters wearing elastomeric half-mask
respirators and performing activities simulating those conducted during fire
overhaul operations. The tests were performed in a controlled laboratory setting.
A newly-developed battery-operated Portable Aerosol Mobility Spectrometer (PAMS)
was used to measure size-resolved aerosol particle concentrations outside
(C(out)) and inside (Cin) of an air-purifying respirator donned on a firefighter,
and the SWPF was calculated as C(out)/C(in). Based on the total aerosol
concentration, the "total" SWPF ranged from 4,222 (minimum) to 35,534 (maximum)
with values falling primarily in a range from 11,171 (25 percentile) to 26,604
(75 percentile) and a median value being ?15,000. This is consistent with the
recently reported fit factor (FF) data base.((1)) The size-resolved SWPF data
revealed a dependency on the particle size. It was concluded that a portable
device such as PAMS can be used on firefighters during overhaul operations (as
well as on other workers wearing elastomeric half-mask respirators) to monitor
the aerosol concentrations in real time and ultimately help prevent overexposure.
|*Firefighters
[MESH]
|*Respiratory Protective Devices
[MESH]
|Adult
[MESH]
|Aerosols/analysis
[MESH]
|Air Pollutants, Occupational/*analysis
[MESH]
|Female
[MESH]
|Fires
[MESH]
|Humans
[MESH]
|Inhalation Exposure/*analysis/prevention & control
[MESH]
|Male
[MESH]
|Occupational Exposure/analysis/prevention & control
[MESH]