Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12427
Title: Exposure to PM2.5 and PAHs from the Tong Liang, China epidemiological study
Authors: Chow, JC
Watson, JG
Chen, LWA
Ho, SSH
Koracin, D
Zielinska, B
Tang, D
Perera, F
Cao, J
Lee, SC 
Keywords: Carbonaceous aerosol
China
Coal
PAH
PM2.5
Spatial distribution
Issue Date: 2006
Publisher: Taylor & Francis
Source: Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 2006, v. 41, no. 4, p. 517-542 How to cite?
Journal: Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering 
Abstract: Chemically speciated PM2.5 and particle-bound polycyclic aromatic hydrocarbon (PAH) measurements were made at three sites near urban Tong Liang, Chongqing, a Chinese inland city where coal combustion is used for electricity generation and residential purposes outside of the central city. Ambient sampling was based on 72-hr averages between 3/2/2002 and 2/26/2003. Elevated PM2.5 and PAH concentrations were observed at all three sites, with the highest concentrations found in winter and the lowest in summer. This reflects a coupling effect of source variability and meteorological conditions. The PM2.5 mass estimated from sulfate, nitrate, ammonium, organics, elemental carbon, crustal material, and salt corresponded with the annual average gravimetric mass within ±10%. Carbonaceous aerosol was the dominant species, while positive correlations between organic carbon and trace elements (e.g., As, Se, Br, Pb, and Zn) were consistent with coal-burning and motor vehicle contributions. Ambient particle-bound PAHs of molecular weight 168-266 were enriched by 1.5 to 3.5 times during the coal-fired power plant operational period. However, further investigation is needed to determine the relative contribution from residential and utility coal combustion and vehicular activities.
URI: http://hdl.handle.net/10397/12427
ISSN: 1093-4529
EISSN: 1532-4117
DOI: 10.1080/10934520600564253
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