TY - JOUR
T1 - Factors affecting the level and pattern of polycyclic aromatic hydrocarbons (PAHs) at Gosan, Korea during a dust period
AU - Choi, Sung Deuk
AU - Ghim, Young Sung
AU - Lee, Ji Yi
AU - Kim, Jin Young
AU - Kim, Yong Pyo
N1 - Funding Information:
This work was supported by the Korea Ministry of Environment as an Eco-technopia 21 project under grant 2001-44001-8 , the Korea Institute of Science and Technology (KIST) , and the Hankuk University of Foreign Studies Research Fund . This work was also supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (Nos. 2010-0003424 and 2011-0028597 ).
PY - 2012/8/15
Y1 - 2012/8/15
N2 - Polycyclic aromatic hydrocarbons (PAHs) in both gas and total suspended particles were measured at Gosan, Jeju Island in Korea, a remote background site, for 15 days (March 29-April 12, 2002). During the sampling period, a severe three-day Asian dust (AD) event originating from Mongolia and northern China was observed throughout the Korean Peninsula and Jeju Island. In addition, pollution (PO) and normal (NO) periods were also identified based on the levels of anthropogenic pollutants. Despite a large difference of PM 10 concentrations between the AD and PO periods, the levels of particulate PAHs in both periods were comparable (2.7±1.0 and 2.4±0.5ngm -3, respectively) since they were determined by the concentration of anthropogenic PM 2.5 transported from industrial areas of China. In the AD period, the level of gaseous PAHs, which were mostly from local sources, was the lowest due to strong winds; the gas/particle partitioning was close to equilibrium as the effect of long-range transport was manifested. The results of backward air trajectories, correlation analysis, and diagnostic ratios show that long-range transport of particulate PAHs produced by coal/biomass burning in China could strongly affect the levels and patterns of PAHs at Gosan, Korea.
AB - Polycyclic aromatic hydrocarbons (PAHs) in both gas and total suspended particles were measured at Gosan, Jeju Island in Korea, a remote background site, for 15 days (March 29-April 12, 2002). During the sampling period, a severe three-day Asian dust (AD) event originating from Mongolia and northern China was observed throughout the Korean Peninsula and Jeju Island. In addition, pollution (PO) and normal (NO) periods were also identified based on the levels of anthropogenic pollutants. Despite a large difference of PM 10 concentrations between the AD and PO periods, the levels of particulate PAHs in both periods were comparable (2.7±1.0 and 2.4±0.5ngm -3, respectively) since they were determined by the concentration of anthropogenic PM 2.5 transported from industrial areas of China. In the AD period, the level of gaseous PAHs, which were mostly from local sources, was the lowest due to strong winds; the gas/particle partitioning was close to equilibrium as the effect of long-range transport was manifested. The results of backward air trajectories, correlation analysis, and diagnostic ratios show that long-range transport of particulate PAHs produced by coal/biomass burning in China could strongly affect the levels and patterns of PAHs at Gosan, Korea.
KW - Anthropogenic pollutants
KW - Gas/particle partitioning
KW - PM
KW - Source identification
UR - http://www.scopus.com/inward/record.url?scp=84862672446&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2012.05.012
DO - 10.1016/j.jhazmat.2012.05.012
M3 - Article
C2 - 22633880
AN - SCOPUS:84862672446
SN - 0304-3894
VL - 227-228
SP - 79
EP - 87
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -