Factors affecting the level and pattern of polycyclic aromatic hydrocarbons (PAHs) at Gosan, Korea during a dust period

Sung Deuk Choi, Young Sung Ghim, Ji Yi Lee, Jin Young Kim, Yong Pyo Kim

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)79-87
Number of pages9
JournalJournal of Hazardous Materials
Volume227-228
DOIs
StatePublished - 15 Aug 2012

Keywords

  • Anthropogenic pollutants
  • Gas/particle partitioning
  • PM
  • Source identification

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