This research investigated the characteristics of fine particle concentration and ionic elements of PM2.5 during sea breeze occurrences during summertime in Busan. The PM10 and PM2.5 concentrations of summertime sea breeze occurrence days in Busan were 46.5 ㎍/㎥ and 34.9 ㎍/㎥, respectively. The PM10 and PM2.5 concentrations of summertime non-sea breeze occurrence days in Busan were 25.3 ㎍/㎥ and 14.3 ㎍/㎥, respectively. The PM2.5/PM10 ratios of sea breeze occurrence days and non-sea breeze occurrence days were 0.74 and 0.55, respectively. The SO4 2-, NH4 +, and NO3 - concentrations in PM2.5 of sea breeze occurrence days were 9.20 ㎍/㎥, 4.26 ㎍/㎥, and 3.18 ㎍/㎥ respectively. The sulfur oxidation ratio (SOR) and nitrogen oxidation ratio (NOR) of sea breeze occurrence days were 0.33 and 0.05, respectively. These results indicated that understanding the fine particle concentration and ionic elements of PM2.5 during sea breeze summertime conditions can provide insights useful for establishing a control strategy of urban air quality.

Abstract
1. 서 론
2. 자료 및 방법
3. 결과 및 고찰
    3.1. 부산 지역 최근 2년간 여름철 해풍 발생 특성
    3.2. 부산지역 해풍 발생 시 미세먼지 및 초미세먼지 중의 이온 성분 특성
    3.3. 2018년 7월 13일∼7월 20일의 고농도 미세먼지 사례연구
4. 결 론
REFERENCES

• 전병일(신라대학교 화학공학과) | Byung-Il Jeon (Department of Chemical Engineering, Silla University) Corresponding author