Factors affecting the level and pattern of polycyclic aromatic hydrocarbons (PAHs) at Gosan, Korea during a dust period
- Factors affecting the level and pattern of polycyclic aromatic hydrocarbons (PAHs) at Gosan, Korea during a dust period
- 최성득; 김영성; 이지이; 김진영; 김용표
- Anthropogenic pollutants; PM2.5; Gas/particle partitioning; Source identification
- Issue Date
- Journal of hazardous materials
- VOL 227-228, 79-87
- 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 PM10 concentrations between the AD and PO periods, the levels of particulate PAHs in both
periods were comparable (2.7±1.0 and 2.4±0.5 ng m−3, respectively) since they were determined by the
concentration of anthropogenic PM2.5 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.
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