실시간 에어로졸 질량분석기를 이용한 PM1.0의 화학적성분의특성에 관한 연구 (A Study on the Characteristics of PM1.0 Chemical Components Using a Real-time Aerosol Mass Spectrometer)

서지정보

· 발행기관 : 한국도시환경학회
· 수록지 정보 : 한국도시환경학회지 / 18권 / 4호 / 485 ~ 494페이지
· 저자명 : 박진수, 최진수, 김현재, 오준, 성민영, 안준영, 이상보, 김정호

초록

2017년 겨울철 인천에서 미세먼지(PM1.0)의 화학적 성분과 산화특성을 파악하였다. 측정기간 대기오염물질 농도는PM10 46 ± 22 µg/m3, PM2.5 29 ± 18 µg/m3, SO2 5(± 3) ppb, CO 0.56(± 0.24) ppm, O3 21(± 13) ppb, NO2 28(± 17) ppb이었다. PM1.0 화학적 성분은 organic 성분이 3.2 µg/m3, nitrate 1.9 µg/m3로 주요성분으로 나타났다. 주간과 야간에서 대부분 야간에 높은 농도를 나타냈다. 측정기간 NOR(nitrate oxidation rate)은 0.06 이었고, SOR(sulfate oxidation rate)은0.11이었다. 고농도기간, NOR은 0.6까지 증가하였으며, nitrate 성분도 증가하였다. NOx/SO2 비는 평균 8.7이었으며, nitrate/sulfate 비율은 평균 2.1로서 측정지점에 위치한 발전소, 산업 보일러를 포함한 고정오염원과 이동오염원인 자동차로부터 배출된 NOx가 기여요인으로 작용한 것으로 판단된다.

영어초록

This study aims to identify the characteristics of oxidation and chemical composition of PM in winter season, 2017 at Incheon area. The mean concentration of air pollutants were 46 ± 22 µg/m3-PM10, 29 ± 18 µg/m3/-PM2.5, 5 ± 3 ppb-SO2, 0.56 ± 0.24 ppm-CO, 21 ± 13 ppb-O3 and 28 ± 17 ppb-NO2, respectively. The dominant ion of the PM1.0 chemical component were organic with 3.2 µg/m3 and nitrate with 1.9 µg/m3. The day and night variation of the PM1.0 chemical components was higher in nighttime than those of daytime. The averaged nitrate oxidation rate (SOR) was 0.06 and sulfate oxidation rate was 0.11 during the field campaign. In the high mass loading period, nitrate oxidation rate (NOR) was up to 0.6 and also the nitrate in PM1.0 was increased. The averaged ratio of NOx/SO2 was 8.7 and nitrate/sulfate was 3.1, respectively. In this results, the nitrate component in PM1.0 was influenced by NOx from the stationary source as power plant and the mobile source around the measurement site.

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