(주)에이피엠엔지니어링

강원도 춘천과 원주에서 측정한 PM2.5의 화학적 특성 비교

Comparable Study on the Chemical Characteristics of PM2.5 Measured in Chuncheon and Wonju, Gangwon-do

Abstract 

In this study, PM2.5 and its major chemical constituents were measured in two different cities in South Korea. One

monitoring site is located in Chuncheon, where there are no large anthropogenic sources, and the other monitoring site

is located in Wonju, where the emission rates of most air pollutants including PM2.5 are higher than those in

Chuncheon. During the study period, concentrations of PM2.5 mass and ionic compounds were higher in Wonju while

carbonaceous compounds were more abundant in Chuncheon. NO3 - and organic carbon (OC) showed the highest

concentration in Wonju and Chuncheon, respectively. There was statistically significant correlation between OC and

elemental carbon (EC) in Chuncheon, but no correlation was observed between two species in Wonju. In Wonju, OC

was enhanced with northerly winds while EC increased with westerly winds, suggesting that OC and EC were emitted

(or secondarily produced) from different sources. For high concentration episodes(HCEs) observed in Chuncheon, NO3 -

and OC increased the most, and their increment ratios were much higher than in Wonju, indicating that secondary

inorganic and organic formation was significant for enhancing PM2.5 concentration in Chuncheon. In Wonju, NO3 -

49 was the most important species during HCEs, but the increment of OC was not notable.

Key words 

PM2.5, Nitrate, Secondary aerosol, Organic carbon, High concentration episode

▶출처 : 한국대기환경학회지 제 39권 제 2 호, 2023.04