광주지역 미세먼지의 화학적 조성이 시정에 미치는 영향에 관한 연구

• 영문명: The Effect on Visibility of the Chemical Composition of Fine Particles in the Gwangju Area
• 발행기관: 한국환경보건학회
• 저자명: 정선아(Sun-A Jung) 임철수(Cheol-Soo Lim) 조미라(Mi-Ra Jo) 이상보(Sang-Bo Lee) 김정수(Jung-Soo Kim) 신은상(Eun-Sang Shin)
• 간행물 정보: 『1. 한국환경보건학회지』제44권 제1호, 1~14쪽, 전체 14쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2018.02.28

영문 초록

Objectives: The purpose of this study is to investigate the main cause of visibility impairment by analyzing the contributions of the light extinction coefficient of major air pollution components and the change of the light extinction coefficient byrelative humidity. Methods: The characteristics of the light extinction coefficient calculated by the photochemical method using fine particle component data measured in 2015 in the Gwangju area were examined. Results: The extinction efficiency per unit mass of PM2.5 particles was 4.5 m²/g and that of PM_10-2.5 particles was 0.6 m²/g. Thisdifference indicates that most of the visibility impairment in Gwangju was caused by PM_2.5 particles. When visibility was poor, the contribution of ammonium sulphate and ammonium nitrate was significantly increased. Relative humidity was also a major cause of visibility decay. The influx of air currents in Gwangju was mostly caused by the long distance movement of pollutants emitted from the eastern part of China. Ammonium sulphate and ammonium nitrate, which are hygroscopic secondary contaminants, were the main causative agents of visibility impairment. Conclusions: Ammonium sulphate and ammonium nitrate were the main causative agents of visibility impairment in Gwangju. The influx of air currents in Gwangju was mostly caused by the long distance movement of pollutants emitted from the eastern part of China.

목차

I. 서 론

II. 연구내용 및 방법

III. 연구결과

IV. 고 찰

V. 결 론

키워드

visibility fine particle light extinction coefficient secondary hygroscopic particles relative humidity