Particle exposure during the 2013 haze in Singapore: Importance of the built environment

Jin Zhou; Ailu Chen; Qingliang Cao; Bin Yang; Victor W.-C. Chang; William W. Nazaroff

doi:10.1016/j.buildenv.2015.04.029

Particle exposure during the 2013 haze in Singapore: Importance of the built environment

Jin Zhou, Ailu Chen, Qingliang Cao, Bin Yang, Victor W.-C. Chang, William W. Nazaroff

Research output: Contribution to journal › Article › Research › peer-review

48 Citations (Scopus)

Abstract

The 2013 haze was the most serious air pollution event in Singapore's history. Individual exposures to particulate matter differ (a) according to time patterns of behaviour and (b) with the varying degrees of protection provided by buildings against penetration and persistence of outdoor particles. Utilizing real-time
personal monitoring, we evaluated exposures to size-segregated fine particulate matter (PM) of five office workers for six days during the latter portion of the 2013 haze event. The outdoor volume concentrations of particulate matter (0.3e2.5 mm diameter) during moderate and light haze days were in the ranges 15e21 mm3 /cm3 and 7e10 mm3 /cm3 , respectively. More than 80% of total daily exposures occurred indoors in workplaces and residences. The daily-integrated personal exposures for the five subjects during the moderate and light haze days were 140e454 (mm3 /cm3 )-h and 66e239 (mm3 /cm3 )-h,
respectively. Exposure factors for the five participants, quantifying the extent of exposure reduction associated with being indoors, had daily average values ranging from 0.32 to 0.75. The results of this study contribute toward deeper understanding the degree of protection provided by the buildings from
pollution of outdoor origin. The work also contributes knowledge regarding personal exposure to particulate matter during air pollution episodes, especially for tropical climates. © 2015 Elsevier Ltd. All rights reserved

Original language	English
Pages (from-to)	14-23
Number of pages	10
Journal	Building and Environment
Volume	93
Issue number	P1
DOIs	https://doi.org/10.1016/j.buildenv.2015.04.029
Publication status	Published - 2015
Externally published	Yes

Keywords

Southeast Asia
Landscape fires
Personal monitoring
Microenvironment
Aerosol

Access to Document

10.1016/j.buildenv.2015.04.029

48 Citations
1 Conference Paper

Particle exposure during the 2013 haze in Singapore
Zhou, J., Chen, A., Cao, Q., Yang, B., Chang, V. W. C. & Nazaroff, W. W., 2014, Proceedings of the 13th International Conference on Indoor Air Quality and Climate: Hong Kong, 7-12 July 2014. Santa Cruz, CA: International Society of Indoor Air Quality and Climate, Vol. 5. p. 658-660 3 p.
Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

Cite this

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title = "Particle exposure during the 2013 haze in Singapore: Importance of the built environment",

abstract = "The 2013 haze was the most serious air pollution event in Singapore's history. Individual exposures to particulate matter differ (a) according to time patterns of behaviour and (b) with the varying degrees of protection provided by buildings against penetration and persistence of outdoor particles. Utilizing real-timepersonal monitoring, we evaluated exposures to size-segregated fine particulate matter (PM) of five office workers for six days during the latter portion of the 2013 haze event. The outdoor volume concentrations of particulate matter (0.3e2.5 mm diameter) during moderate and light haze days were in the ranges 15e21 mm3 /cm3 and 7e10 mm3 /cm3 , respectively. More than 80% of total daily exposures occurred indoors in workplaces and residences. The daily-integrated personal exposures for the five subjects during the moderate and light haze days were 140e454 (mm3 /cm3 )-h and 66e239 (mm3 /cm3 )-h,respectively. Exposure factors for the five participants, quantifying the extent of exposure reduction associated with being indoors, had daily average values ranging from 0.32 to 0.75. The results of this study contribute toward deeper understanding the degree of protection provided by the buildings frompollution of outdoor origin. The work also contributes knowledge regarding personal exposure to particulate matter during air pollution episodes, especially for tropical climates. {\textcopyright} 2015 Elsevier Ltd. All rights reserved",

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AU - Nazaroff, William W.

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