This study investigated the odor emission characteristics of fertilizer manufacturing facilities. The characteristics were evaluated by measuring the odor concentration at the outlet and site boundary of the complex fertilizer and organic fertilizer manufacturing facilities. The evaluation process utilized the air dilution sensory method and PTR-ToF-MS. The complex odor dilution factor ranged from 100 to 120 times at the outlet of the compound fertilizer manufacturing facility. Specifically, the concentrations of Ammonia and Aldehydes were relatively high as designated odor substances. For the organic fertilizer facility, the dilution factor for complex odors was measured up to a maximum of 3,000. And, designated odorants such as Ammonia and Hydrogen sulfide were measured at levels up to parts per million (ppm). The odor contribution assessment of the fertilizer manufacturing facilities showed that the complex fertilizer facility exhibited similar contributions from Aldehydes and Sulfur compounds. On the other hand, the organic fertilizer facility had the highest contribution of over 62% from Sulfur compounds. As odor substances are easily changed and diffused according to weather conditions, it is difficult to obtain representative data according to the measurement time. Therefore, if continuous monitoring of odorous substances is performed using equipment that can be measured in real time without pretreatment, it becomes feasible to identify odor emission sources and regional spatio-temporal distribution. This information would then serve as a basis for analyzing odorant contamination characteristics and establishing appropriate countermeasures.

1. 서 론
2. 연구 내용 및 방법
    2.1 조사 대상 사업장
    2.2. 기상조건
    2.3 공기희석 관능법
    2.4 PTR-ToF-MS 이용한 실시간 악취 측정
    2.5 악취활성도 및 기여도
3. 결과 및 고찰
    3.1 복합악취 배출특성
    3.2 지정악취물질 배출특성
    3.3 악취활성값 산정과 기여도 평가
4. 결 론
감사의 글

• 길한뉘(국립환경과학원 대기공학연구과) | Hannui Gil (National Institute of Environmental Research)
• 김기홍(국립환경과학원 대기공학연구과) | Keehong Kim (National Institute of Environmental Research)
• 윤상희(국립환경과학원 대기공학연구과) | Sanghee Yoon (National Institute of Environmental Research)
• 강대일(국립환경과학원 대기공학연구과) | Daeil Kang (National Institute of Environmental Research)
• 공부주(국립환경과학원 대기공학연구과) | Buju Gong (National Institute of Environmental Research) Corresponding Author