Controlled experiments measuring personal exposure to PM2.5 in close proximity to cigarette smoking.
Indoor Air
; 24(2): 199-212, 2014 Apr.
Article
en En
| MEDLINE
| ID: mdl-23808850
ABSTRACT
Few measurements of exposure to secondhand smoke (SHS) in close proximity to a smoker are available. Recent health studies have demonstrated an association between acute (<2 h) exposures to high concentrations of SHS and increased risk of cardiovascular and respiratory disease. We performed 15 experiments inside naturally ventilated homes and 16 in outdoor locations, each with 2-4 non-smokers sitting near a cigarette smoker. The smoker's and non-smokers' real-time exposures to PM2.5 from SHS were measured by using TSI SidePak monitors to sample their breathing zones. In 87% of the residential indoor experiments, the smoker received the highest average exposure to SHS, with PM2.5 concentrations ranging from 50-630 µg/m(3) . During the active smoking period, individual non-smokers sitting within approximately 1 m of a smoker had average SHS exposures ranging from negligible up to >160 µg/m(3) of PM2.5 . The average incremental exposure of the non-smokers was higher indoors (42 µg/m(3) , n = 35) than outdoors (29 µg/m(3) , n = 47), but the overall indoor and outdoor frequency distributions were similar. The 10-s PM2.5 averages during the smoking periods showed great variability, with multiple high concentrations of short duration (microplumes) both indoors and outdoors.
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Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Contaminación por Humo de Tabaco
/
Exposición a Riesgos Ambientales
/
Material Particulado
Límite:
Humans
Idioma:
En
Revista:
Indoor Air
Asunto de la revista:
SAUDE AMBIENTAL
Año:
2014
Tipo del documento:
Article
País de afiliación:
Estados Unidos