The concentrations of odor and volatile organic compound (VOC)-inducing substances were measured using selected ion flow tube mass spectrometers (SIFT-MS). SIFT-MS can continuously measure the concentration of odor-causing substances and VOCs in real time without pre-treatment steps. Measurements were conducted during the day and at night at 10 spots in the chemical block of the Sihwa industrial complex. Similar measurement results were observed in the daytime and nighttime for materials except methyl ethyl ketone with high concentrations. A high concentration of hydrogen sulfide was also measured at night. It is expected that an amount of emissions of VOCs and odor-causing substances under the absence of inspection can be traced if measured at other industrial complexes in vulnerable times.

Abstract
1. 서 론
2. 연구방법
    2.1측정지점 개요
    2.2 SIFT-MS분석방법
    2.3연구방법
    2.4 기상조건 및 측정지점
3. 연구결과 및 고찰
    3.1시화산업단지 주,야간 측정결과
    3.2 측정결과 분석
    3.3 측정결과 활용방안
4. 결 론
References

• 신현준(수도권대기환경청) | Hyun Jun Shin (Metropolitan Air Quality Management Office) Corresponding author
• 김재성(수도권대기환경청) | Jae Seong Kim (Metropolitan Air Quality Management Office)
• 공현철(수도권대기환경청) | Hyun Chul Kong (Metropolitan Air Quality Management Office)