The annual number of odor complaints increased about 10 times over 14 years from 4,302 in 2005 to 40,854 in 2019, in Korea. Especially, livestock facilities account for more than 50% of the odor complaints and the swine farms account for the most odor complaints among livestock. It is therefore necessary to manage swine farms as the major odor emission source. In this study, a real-time odor monitoring system equipped with PTR-TOF-MS (proton transfer reaction time-of-flight mass spectrometric) was used to measure the odorous substances in two swine farms. Odorous substances emitted from outlets were sampled and measured at the two types of swine farms. In addition, the boundary spots were designated as measurement points. As a result, the rankings of the odorous substances in order, from highest to lowest, were ammonia, acetaldehyde, methyl mercaptan, fatty acids, etc. and the level of odor intensity was 0.8-4.4 at the outlet of the swine farms. The concentration at the boundary decreased between 1/100 ~ 1/10000 compared to the concentration emitted from outlets. Base on the results of evaluating odor activity values, Skatole and p-Cresol were estimated as major odor substances in swine farms.

Abstract
1. 서 론
2. 연구 내용 및 방법
    2.1 조사 대상 농장
    2.2 기상조건
    2.3 PTR-TOF-MS 이용한 실시간 악취 측정
    2.4 악취세기 및 악취기여도
3. 결과 및 고찰
    3.1 돈사시설의 농도 분포
    3.2 돈사시설의 물질별 악취세기 및 활성도
    3.3 돈사시설 악취물질의 악취기여도 평가
4. 결 론
감사의 글
Refferences

• 이경원(국립환경과학원 대기공학연구과) | Kyungwon Lee (National Institute of Environmental Research)
• 김기홍(국립환경과학원 대기공학연구과) | Keehong Kim (National Institute of Environmental Research)
• 박규태(국립환경과학원 대기공학연구과) | Gyutae Park (National Institute of Environmental Research)
• 박정민(국립환경과학원 대기공학연구과) | Jungmin Park (National Institute of Environmental Research)
• 공부주(국립환경과학원 대기공학연구과) | Buju Gong (National Institute of Environmental Research) Corresponding Author