Airborne particles in indoor environment of homes, schools, offices and aged care facilities: The main routes of exposure

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Airborne particles in indoor environment of homes, schools, offices and aged care facilities : The main routes of exposure. / Morawska, L.; Ayoko, G. A.; Bae, G. N.; Buonanno, Giorgio; Chao, C. Y. H.; Clifford, S.; Fu, Sai Chuen; Hänninen, Otto; He, C; Isaxon, C.; Mazaheri, M.; Salthammer, T.; Waring, M. S.; Wierzbicka, A.

I: Environment International, Vol. 108, 2017, s. 75-83.

Forskningsoutput: TidskriftsbidragÖversiktsartikel

Harvard

Morawska, L, Ayoko, GA, Bae, GN, Buonanno, G, Chao, CYH, Clifford, S, Fu, SC, Hänninen, O, He, C, Isaxon, C, Mazaheri, M, Salthammer, T, Waring, MS & Wierzbicka, A 2017, 'Airborne particles in indoor environment of homes, schools, offices and aged care facilities: The main routes of exposure', Environment International, vol. 108, s. 75-83. https://doi.org/10.1016/j.envint.2017.07.025

APA

CBE

Morawska L, Ayoko GA, Bae GN, Buonanno G, Chao CYH, Clifford S, Fu SC, Hänninen O, He C, Isaxon C, Mazaheri M, Salthammer T, Waring MS, Wierzbicka A. 2017. Airborne particles in indoor environment of homes, schools, offices and aged care facilities: The main routes of exposure. Environment International. 108:75-83. https://doi.org/10.1016/j.envint.2017.07.025

MLA

Vancouver

Author

Morawska, L. ; Ayoko, G. A. ; Bae, G. N. ; Buonanno, Giorgio ; Chao, C. Y. H. ; Clifford, S. ; Fu, Sai Chuen ; Hänninen, Otto ; He, C ; Isaxon, C. ; Mazaheri, M. ; Salthammer, T. ; Waring, M. S. ; Wierzbicka, A. / Airborne particles in indoor environment of homes, schools, offices and aged care facilities : The main routes of exposure. I: Environment International. 2017 ; Vol. 108. s. 75-83.

RIS

TY - JOUR

T1 - Airborne particles in indoor environment of homes, schools, offices and aged care facilities

T2 - Environmental International

AU - Morawska, L.

AU - Ayoko, G. A.

AU - Bae, G. N.

AU - Buonanno, Giorgio

AU - Chao, C. Y. H.

AU - Clifford, S.

AU - Fu, Sai Chuen

AU - Hänninen, Otto

AU - He, C

AU - Isaxon, C.

AU - Mazaheri, M.

AU - Salthammer, T.

AU - Waring, M. S.

AU - Wierzbicka, A.

PY - 2017

Y1 - 2017

N2 - It has been shown that the exposure to airborne particulate matter is one of the most significant environmental risks people face. Since indoor environment is where people spend the majority of time, in order to protect against this risk, the origin of the particles needs to be understood: do they come from indoor, outdoor sources or both? Further, this question needs to be answered separately for each of the PM mass/number size fractions, as they originate from different sources. Numerous studies have been conducted for specific indoor environments or under specific setting. Here our aim was to go beyond the specifics of individual studies, and to explore, based on pooled data from the literature, whether there are generalizable trends in routes of exposure at homes, schools and day cares, offices and aged care facilities. To do this, we quantified the overall 24 h and occupancy weighted means of PM10, PM2.5 and PN - particle number concentration. Based on this, we developed a summary of the indoor versus outdoor origin of indoor particles and compared the means to the WHO guidelines (for PM10 and PM2.5) and to the typical levels reported for urban environments (PN). We showed that the main origins of particle metrics differ from one type of indoor environment to another. For homes, outdoor air is the main origin of PM10 and PM2.5 but PN originate from indoor sources; for schools and day cares, outdoor air is the source of PN while PM10 and PM2.5 have indoor sources; and for offices, outdoor air is the source of all three particle size fractions. While each individual building is different, leading to differences in exposure and ideally necessitating its own assessment (which is very rarely done), our findings point to the existence of generalizable trends for the main types of indoor environments where people spend time, and therefore to the type of prevention measures which need to be considered in general for these environments.

AB - It has been shown that the exposure to airborne particulate matter is one of the most significant environmental risks people face. Since indoor environment is where people spend the majority of time, in order to protect against this risk, the origin of the particles needs to be understood: do they come from indoor, outdoor sources or both? Further, this question needs to be answered separately for each of the PM mass/number size fractions, as they originate from different sources. Numerous studies have been conducted for specific indoor environments or under specific setting. Here our aim was to go beyond the specifics of individual studies, and to explore, based on pooled data from the literature, whether there are generalizable trends in routes of exposure at homes, schools and day cares, offices and aged care facilities. To do this, we quantified the overall 24 h and occupancy weighted means of PM10, PM2.5 and PN - particle number concentration. Based on this, we developed a summary of the indoor versus outdoor origin of indoor particles and compared the means to the WHO guidelines (for PM10 and PM2.5) and to the typical levels reported for urban environments (PN). We showed that the main origins of particle metrics differ from one type of indoor environment to another. For homes, outdoor air is the main origin of PM10 and PM2.5 but PN originate from indoor sources; for schools and day cares, outdoor air is the source of PN while PM10 and PM2.5 have indoor sources; and for offices, outdoor air is the source of all three particle size fractions. While each individual building is different, leading to differences in exposure and ideally necessitating its own assessment (which is very rarely done), our findings point to the existence of generalizable trends for the main types of indoor environments where people spend time, and therefore to the type of prevention measures which need to be considered in general for these environments.

KW - Aged care indoor particles

KW - Child care indoor particles

KW - Home indoor particles

KW - Indoor aerosols

KW - Indoor particulate matter

KW - Indoor ultrafine particles

KW - Office indoor particles

KW - School indoor particles

U2 - 10.1016/j.envint.2017.07.025

DO - 10.1016/j.envint.2017.07.025

M3 - Review article

VL - 108

SP - 75

EP - 83

JO - Environmental International

JF - Environmental International

SN - 1873-6750

ER -