Indoor air environments for people are recently being observed because the time we spend inside the house or a building throughout the day has been extended during the present circumstances. This is why formaldehyde and volatile organic compounds (VOCs) are regulated, which can cause Sick Building Syndrome (SBS). There might be other VOCs not regulated by law in newly built collective housing, however, in order to compensate for the reduced concentration of regulated VOCs such as benzene, toluene, ethylbenzene, xylene, and styrene. In this study, the concentration of unregulated VOCs in newly built collective housing structures located in the Seoul Special City was researched to find potential indoor hazards for citizens and to prepare basic data for further research.

Abstract
1. 서 론
2. 연구방법
    2.1 시료 포집
    2.2 분석
3. 결과 및 고찰
    3.1 평균 농도
    3.2 계절별 분류
    3.3 층부 및 면적별 분류
4. 결 론
References

• 임학명(서울특별시 보건환경연구원) | Hakmyeong Lim (Seoul Institute of Health and Environments : Living Environment Research Division)
• 박명규(서울특별시 보건환경연구원) | Myeong-kyu Park (Seoul Institute of Health and Environments : Living Environment Research Division)
• 김지훈(서울특별시 보건환경연구원) | Ji-hoon Kim (Seoul Institute of Health and Environments : Living Environment Research Division)
• 서장원(서울특별시 보건환경연구원) | Jang-won Seo (Seoul Institute of Health and Environments : Living Environment Research Division)
• 유득현(서울특별시 보건환경연구원) | Deuk-hyeon Yoo (Seoul Institute of Health and Environments : Living Environment Research Division)
• 김상익(서울특별시 보건환경연구원) | Sang-ik Kim (Seoul Institute of Health and Environments : Living Environment Research Division)
• 민병철(서울특별시 보건환경연구원) | Byeong-chul Min (Seoul Institute of Health and Environments : Living Environment Research Division)
• 원선정(서울특별시 보건환경연구원) | Sun-jung Won (Seoul Institute of Health and Environments : Living Environment Research Division)
• 손지환(서울특별시 보건환경연구원) | Ji-hwan Son (Seoul Institute of Health and Environments : Living Environment Research Division)
• 김광래(서울특별시 보건환경연구원) | Kwang-rae Kim (Seoul Institute of Health and Environments : Living Environment Research Division)
• 조석주(서울특별시 보건환경연구원) | Seog-ju Cho (Seoul Institute of Health and Environments : Living Environment Research Division)
• 어수미(서울특별시 보건환경연구원) | Soo-mi Eo (Seoul Institute of Health and Environments : Living Environment Research Division) Corresponding author
• 신용승(서울특별시 보건환경연구원) | Yong-seung Shin (Seoul Institute of Health and Environments : Living Environment Research Division)