철강산업도시 포항지역 유해대기오염물질의 오염특성 ( I ) - 다환방향족탄화수소

• Published in: 한국대기환경학회지 Vol. 34; no. 2; pp. 233 - 243
• Main Authors: 백경민, 서영교, 조병윤, 백성옥, Baek, Kyung-Min, Seo, Young-Kyo, Cho, Byoung-Yoon, Baek, Sung-Ok
• Format: Journal Article
• Language: Korean
• Published: 한국대기환경학회 01.04.2018
• Subjects: 대기과학; TSP; Pohang; Benzo[a]pyrene; PAH; Steel industry
• ISSN: 1598-7132; 2383-5346
• DOI: 10.5572/KOSAE.2018.34.2.233

This study was carried out to characterize the ambient levels of PAH concentrations in Pohang city, where steel industry has been intensively developed. A large amount of PAH emissions from steel production and related industries in Pohang are concerned about the environmental health hazards of nearby residents. TSP samples were seasonally collected during 10 days at four sites in Pohang from April to December 2010. Each sample was collected for 24 hours using high-volume air sampler. All samples were extracted by $soxtec^{TM}$ before concentration of 1.0 mL. The concentrates were analyzed by GC/MS. The prevailing wind direction was southwest and west-southwest in Pohang during the measurement period. Variations of TSP concentrations appeared to be similar between four sites. The highest TSP concentration was found in fall, while the lowest in summer. The highest PAH concentration was found at an industrial site, while the lowest at a residential/commercial site. In the case of BaP, the average concentration at the industrial site was $0.63{\pm}0.66ng/m^3$, which was approximately 2 times of the residential/commercial site. The paired t-test (p<0.05) showed significant differences between industrial and residential area. Particulate PAH concentrations were higher in the winter and lower in the summer. The concentrations of BaP in winter were 2~10 times higher than those in the other three seasons. This study clearly demonstrated the impact of steel industry on the elevated levels of PAH in Pohang city.