TY - JOUR
T1 - Relationships between outdoor and personal exposure of carbonaceous species and polycyclic aromatic hydrocarbons (PAHs) in fine particulate matter (PM2.5) at Hong Kong
AU - Fan, Zhan Lan
AU - Chen, Xiao Cui
AU - Lui, Ka Hei
AU - Ho, Steven Sai Hang
AU - Cao, Jun Ji
AU - Lee, Shuncheng
AU - Huang, Hong
AU - Ho, Kin Fai
PY - 2017/3/1
Y1 - 2017/3/1
N2 - Personal and ambient fine particulate matter (PM2.5) samples were simultaneously collected at Hong Kong during winter in 2014. Mass concentration, organic carbon (OC), elemental carbon (EC), and polycyclic aromatic hydrocarbons (PAHs) relationships were analyzed. The correlations of personal and ambient concentrations of PM2.5, OC, and EC indicated the ambient concentrations were the factors showing influences on the personal exposures. Personal to ambient (P/A) ratios in PM2.5, OC, and EC were all > 1, suggesting influences between indoor sources and/or personal activities. Significant higher ambient ΣPAHs concentrations with P/A ratios were nevertheless < 1. The Σ15 U.S. EPA priority PAHs accounted for 50.6% and 70.8% of ΣPAHs in personal and ambient samples, respectively. The ratios of indicator compounds confirmed the origin of PAHs in personal PM2.5, which were found to be associated predominantly with traffic emissions and the influence by the indoor sources.
AB - Personal and ambient fine particulate matter (PM2.5) samples were simultaneously collected at Hong Kong during winter in 2014. Mass concentration, organic carbon (OC), elemental carbon (EC), and polycyclic aromatic hydrocarbons (PAHs) relationships were analyzed. The correlations of personal and ambient concentrations of PM2.5, OC, and EC indicated the ambient concentrations were the factors showing influences on the personal exposures. Personal to ambient (P/A) ratios in PM2.5, OC, and EC were all > 1, suggesting influences between indoor sources and/or personal activities. Significant higher ambient ΣPAHs concentrations with P/A ratios were nevertheless < 1. The Σ15 U.S. EPA priority PAHs accounted for 50.6% and 70.8% of ΣPAHs in personal and ambient samples, respectively. The ratios of indicator compounds confirmed the origin of PAHs in personal PM2.5, which were found to be associated predominantly with traffic emissions and the influence by the indoor sources.
KW - Carbonaceous aerosol
KW - Fine particulate matter
KW - Personal exposure
KW - Polycyclic aromatic hydrocarbons
UR - http://www.scopus.com/inward/record.url?scp=85014096890&partnerID=8YFLogxK
U2 - 10.4209/aaqr.2016.08.0349
DO - 10.4209/aaqr.2016.08.0349
M3 - Journal article
SN - 1680-8584
VL - 17
SP - 666
EP - 679
JO - Aerosol and Air Quality Research
JF - Aerosol and Air Quality Research
IS - 3
ER -