메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색
질문

논문 기본 정보

자료유형
학술저널
저자정보
유근혜 (전남대학교) 박승식 (전남대학교) 정선아 (국립환경과학원) 조미라 (국립환경과학원) 임용재 (국립환경과학원) 신혜정 (국립환경과학원) 이상보 (국립환경과학원) 김영성 (한국외국어대학교)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제34권 제4호
발행연도
2018.8
수록면
567 - 587 (21page)
DOI
10.5572/KOSAE.2018.34.4.567

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색
질문

이 논문의 연구 히스토리 (2)

초록· 키워드

오류제보하기
A severe haze event occurred in October 2015 in Gwangju, Korea. In this study, the driving chemical species and the formation mechanisms of PM<SUB>2.5</SUB> pollution were investigated to better understand the haze event. Hourly concentrations of PM2.5, organic and elemental carbon, water-soluble ions, and elemental constituents were measured at the air quality intensive monitoring station in Gwangju. The haze event occurred was attributed to a significant contribution (72.3%) of secondary inorganic species concentration to the PM<SUB>2.5</SUB>, along with the contribution of organic aerosols that were strongly attributed to traffic emissions over the study site. MODIS images, weather charts, and air mass backward trajectories supported the significant impact of long-range transportation (LTP) of aerosol particles from northeastern China on haze formation over Gwangju in October 2015. The driving factor for the haze formation was stagnant atmospheric flows around the Korean peninsula, and high relative humidity (RH) promoted the haze formation at the site. Under the high RH conditions, SO₄<SUP>2-</SUP> and NO₃<SUP>- </SUP>were mainly produced through the heterogenous aqueous-phase reactions of SO₂ and NO₂, respectively. Moreover, hourly O₃ concentration during the study period was highly elevated, with hourly peaks ranging from 79 to 95 ppb, suggesting that photochemical reaction was a possible formation process of secondary aerosols. Over the PM<SUB>2.5</SUB> pollution, behavior and formation of secondary ionic species varied with the difference in the impact of LTP. Prior to October 19 when the influence of LTP was low, increasing rate in NO3- was greater than that in NO₂, but both SO₂ and SO₄<SUP>2-</SUP> had similar increasing rates. While, after October 20 when the impact of haze by LTP was significant, SO₄<SUP>2-</SUP> and NO₃<SUP>-</SUP> concentrations increased significantly more than their gaseous precursors, but with greater increasing rate of NO₃<SUP>-</SUP>. These results suggest the enhanced secondary transformation of SO₂ and NO₂ during the haze event. Overall, the result from the study suggests that control of anthropogenic combustion sources including vehicle emissions is needed to reduce the high levels of nitrogen oxide and NO₃<SUP>-</SUP> and the high PM<SUP>2.5</SUP> pollution occurred over fall season in Gwangju.

목차

Abstract
1. 서론
2. 실험 방법
3. 결과 및 고찰
4. 요약 및 결론
References

참고문헌 (0)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

이 논문과 함께 이용한 논문

최근 본 자료

전체보기

댓글(0)

0

UCI(KEPA) : I410-ECN-0101-2018-539-003413660