(주)에이피엠엔지니어링

우리나라 권역별 초미세먼지 특성과 저감 방향

Characteristics and Reduction Dirrections of Fine Particles by Regions in Korea

Abstract 

The high temporal resolution (1 hour) measurement data at five intensive air quality monitoring stations from January 1 to

December 31 in 2020 were used (1) to find the characteristics of fine particles (PM2.5) and (2) to estimate the

sensitivity of the fine particles mass concentration to the variation of major ambient inorganic species, such as sulfate,

total nitric acid (nitric acid+nitrate) and total ammonia (ammonium+ammonia). A gas-particle equilibrium model,

ISORROPIA II, was used for the analysis. The acidities and aerosol water contents at the five stations were comparable to each other. The annual mean values for pH and the concentration of the aerosol water content were 3.7 and

15 μg/m3, respectively. At all stations, the fine particles mass concentrations were most sensitive to the variation of

the concentrations of total nitric acid followed by those of sulfate and total ammonia. Ammonia reduction was effective for PM2.5 reduction when ammonia was reduced by more than 60% of the 2020 level. Further research directions for

effective air quality management are also suggested.

Key words 

Gas-particle equilibrium, PM2.5 control strategy, Intensive Air Quality Monitoring Stations, Inorganic ions

▶출처 : 한국대기환경학회지 제 39권 제 5 호, 2023.10