This study was conducted to investigate the distribution characteristics, source identification, and health risk of polycyclic aromatic hydrocarbons (PAHs) present in particulate matter 10 (PM-10), in Gwangju. PM-10 samples were collected from September 2021 to August 2022 from three sampling sites, one located in each of the following areas: green, residential, and industrial. The average concentrations of PAHs were found to be higher in the industrial area (9.75±6.51 ng/㎥) than in the green (6.90±2.41 ng/㎥) and residential (6.74±2.38 ng/㎥) areas. Throughout the year and across all sites, five-ring PAHs accounted for the largest proportion (29.8–34.5%) of all PAHs. The concentrations of PAHs showed distinct seasonal variations, with the highest concentration observed in winter, followed by autumn, spring, and summer. Source apportionment analyses were performed using diagnostic ratios and principal component analyses, which indicated that coal/biomass combustion and vehicle emissions were the primary sources of PAHs in PM-10. The incremental lifetime cancer risk was estimated for all age groups at all sampling sites, and the results revealed a much lower risk level than the standard acceptable risk level (1×10-6).

Abstract
1. 서 론
2. 재료 및 방법
    2.1. 연구대상 및 시료채취
    2.2. 분석방법 및 정도관리
    2.3. 통계분석
    2.4. 위해성평가
3. 결과 및 고찰
    3.1. 미세먼지 농도 경향
    3.2. PAHs 농도 분포
    3.3. PAHs 발생원 평가
    3.4. PAHs 위해성 평가
4. 결 론
감사의 글
REFERENCES

• 김승호(광주광역시보건환경연구원) | Seung-Ho Kim (Health and Environment Research Institute of Gwangju) Corresponding author
• 박병훈(광주광역시보건환경연구원) | Byung-Hoon Park (Health and Environment Research Institute of Gwangju)
• 조민철(광주광역시보건환경연구원) | Min-cheol Cho (Health and Environment Research Institute of Gwangju)
• 나혜윤(광주광역시보건환경연구원) | Hye-Yun Na (Health and Environment Research Institute of Gwangju)
• 박원형(광주광역시보건환경연구원) | Won-Hyung Park (Health and Environment Research Institute of Gwangju)
• 서광엽(광주광역시보건환경연구원) | Gwang-yeob Seo (Health and Environment Research Institute of Gwangju)
• 이세행(광주광역시보건환경연구원) | Se-Heang Lee (Health and Environment Research Institute of Gwangju)
• 주흥수(안양대학교 환경에너지공학과) | Hung-Soo Joo (Department of Environmental Engineering, Anyang University)