title: Improving the spatial resolution of atmospheric polycyclic aromatic hydrocarbons using passive air samplers in a multi-industrial city.
abstract: The source-receptor relationship of polycyclic aromatic hydrocarbons (PAHs) in the industrial city has been generally investigated using active air samplers (AAS), but they only provide low spatial resolution data. In this study, the spatial resolution of PAHs was improved by the use of polyurethane foam based passive air samplers (PUF-PAS). We deployed 40 passive air samplers in duplicate at 20 sites in the largest industrial city of Ulsan, South Korea during winter (January 7-February 25, 2011). Among the 16 US-EPA priority PAHs, 13 compounds excluding naphthalene, acenaphthylene, and acenaphthene were selected for the calculation of air concentrations. The level of gaseous ∑(13)PAHs in Ulsan (mean: 43 ng/m(3)) was not as high as we expected due to prevailing winds which transported large amounts of PAHs to the East Sea. The spatial distribution of PAHs, principal component analysis, and diagnostic ratios suggested the influence of PAH emissions from industrial complexes to the surrounding areas. This study demonstrated that the source-receptor relationship of PAHs in the industrial area can be more clearly understood using passive air samplers.
authors.affiliation: School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, UNIST-gil 50, Eonyang-eup, Ulju-gun, Ulsan, 689-798, Republic of Korea. sdchoi@unist.ac.kr
authors.forename: Sung-Deuk
authors.initials: SD
authors.lastname: Choi
authors.forename: Hye-Ok
authors.initials: HO
authors.lastname: Kwon
authors.forename: Yun-Se
authors.initials: YS
authors.lastname: Lee
authors.forename: Eun-Jeong
authors.initials: EJ
authors.lastname: Park
authors.forename: Joo-Yeon
authors.initials: JY
authors.lastname: Oh
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002947:Cities; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods*; D007221:Industry; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D056910:Republic of Korea; D012621:Seasons; D014887:Weather
chemical_list: D000393:Air Pollutants; D011084:Polycyclic Aromatic Hydrocarbons