PTR-ToF-MS와 광흡수 방식의 MIRA를 이용한 대기 중 포름알데히드 실시간 관측 및 비교

• Published in: 환경분석과 독성보건 Vol. 28; no. 1; pp. 37 - 49
• Main Authors: 박승명, Seung-myung Park, 오병훈, Byeong-hun Oh, 김창혁, Chang Hyeok Kim, 신수현, Su-hyun Shin, 김필호, Pilho Kim, 이광열, Kwangyul Lee, 박정민, Jungmin Park, 황규철, Kyuchel Hwang, 김종범, Jong Bum Kim, 박영재, Youngjae Park, 김정호, Jeongho Kim
• Format: Journal Article
• Language: Korean
• Published: 한국환경분석학회 31.03.2025
• Subjects: Formaldehyde; HCHO; Mid-infrared Spectroscopy; PTR-ToF-MS; Real-time analysis; Urban air quality monitoring; 화학
• ISSN: 2672-0175; 2672-1139
• DOI: 10.36278/jeaht.28.1.37

This study investigated the real-time formaldehyde (HCHO) concentrations in an urban area of Ansan, South Korea, during the summer of 2024, using Proton Transfer Reaction Time-of-Flight Mass Spectrometry (PTR- ToF-MS) and Mid-Infrared Spectrometer (MIRA). Average concentrations of HCHO were 4.8±1.7 ppb for PTR-ToF-MS and 3.5±0.7 ppb for MIRA with PTR-ToF-MS, exhibiting higher sensitivity to HCHO variations. Findings with both instruments showed similar temporal trends (R2=0.82) with HCHO concentrations peaking during the daytime (PTR: 6.4 ppb, MIRA: 4.3 ppb) and declining at night (PTR: 2.1 ppb and MIRA: 1.7 ppb). The diurnal variations in HCHO concentration highlighted the active photochemical reaction that occur during the summer. This study provided fundamental insights into the characteristics of photochemical pollution in summer seasons through real-time observations of HCHO concentrations. The results from this study could contribute to urban air quality management through the development of long-term, continuous datasets and correlation analyses with other air pollutants in future research.