Following the social requirement to strengthen field supervision of the asbestos containing materials (ACM) abatement process with regard to asbestos school buildings, this study was conducted to understand the status and characteristics of airborne asbestos that may potentially occur after the ACM abatement process is completed. In the area where a series of asbestos abatement processes were finally completed, comprehensive area air sampling was performed. For sample analysis, Transmission Electron Microscopy (TEM) was used according to The Asbestos Hazard Emergency Response Act (AHERA) method and Phase Contrast Microscopy (PCM) analysis was also performed. Airborne asbestos was detected in 29.5% of the total samples, and the average concentration was 0.0039 ± 0.0123 s/cc (12.3 ± 38.9 s/mm2). 4.5% of the total samples exceeded the AHERA standard (70.0 s/mm2) and the average concentration was 0.0528 ± 0.0256 s/cc (167.2 ± 82.0 s/mm2). Airborne asbestos was no longer detected at the point when AHERA is exceeded after re-cleaning. Most of the detected asbestos was chrysotile (94.4%) and the structure types of asbestos were Matrix (41.4%), Fiber (39.9%), Bundle (10.8%), and Cluster (7.8%). Among the asbestos structures detected through transmission electron microscope analysis, the asbestos structures satisfying PCM-equivalent structures were found to be 6% of the detected asbestos, indicating that there is a limitation of the PCM analysis to check the airborne asbestos in that area. As a result of reviewing the status of airborne asbestos that may potentially occur and the type and dimensions of asbestos structure detected in the area, since the airborne asbestos exposure caused by poor field supervision for the ACM abatement process could not be ruled out, thorough management is necessary. In addition, the result of this study could be used as scientific evidence for establishing and strengthening policies related to ACM abatement, including cases of school buildings.

Abstract
1. 서 론
2. 재료 및 방법
    2.1 시료 채취 대상 및 방법
    2.2 투과전자현미경 분석
    2.3 위상차현미경 분석
3. 결과 및 고찰
    3.1 석면 해체제거공정 완료 후 공기 중 석면 검출 현황
    3.2 석면 해체제거공정 완료 후 검출된 공기 중 석면의 특징(1); 석면의 종류 및 구조
    3.3 석면 해체제거공정 완료 후 검출된 공기 중 석면의 특징(2); 석면의 크기
4. 결 론
References

• 김지성(서울특별시보건환경연구원) | Jisung Kim (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 임기교(서울특별시보건환경연구원) | Kikyo Lim (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 이지영(서울특별시보건환경연구원) | Jiyoung Lee (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 원선정(서울특별시보건환경연구원) | Sunjeong Won (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 배정은(서울특별시보건환경연구원) | Jeongeun Bae (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 양마란(서울특별시보건환경연구원) | Marhan Yang (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 이준연(서울특별시보건환경연구원) | Junyeon Lee (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 배일상(서울특별시보건환경연구원) | Ilsang Bae (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 권승미(서울특별시보건환경연구원) | Seungmi Kwon (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 신진호(서울특별시보건환경연구원) | Jinho Shin (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 신용승(서울특별시보건환경연구원) | Yongseung Shin (Seoul Metropolitan Government Research Institute of Public Health and Environment)
• 김광래(서울특별시보건환경연구원) | Kwangrae Kim (Seoul Metropolitan Government Research Institute of Public Health and Environment) Corresponding author
• 정숙녀(서울특별시보건환경연구원) | Sooknye Chung Corresponding author