Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)

Korean Industrial Hygiene Association (한국산업보건학회)
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Characteristics of Generated Fibrous/Particulate Matters from Asbestos-Containing Building Materials(ACBMs)

해체·제거 작업 시 석면함유 건축자재에서 발생되는 섬유 및 입자상 물질의 특성

  • Choi, Sungwon (Dept. of Prev. Med., College of Medicine, The Catholic University of Korea) ;
  • Jang, Kwang Myoung (Dept. of Prev. Med., College of Medicine, The Catholic University of Korea) ;
  • Park, Kyung Hoon (Dept. of Prev. Med., College of Medicine, The Catholic University of Korea) ;
  • Kim, Dae Jong (Kyungdong University) ;
  • Kim, Hyunwook (Dept. of Prev. Med., College of Medicine, The Catholic University of Korea)
  • 최성원 (가톨릭대학교 의과대학 예방의학교실) ;
  • 장광명 (가톨릭대학교 의과대학 예방의학교실) ;
  • 박경훈 (가톨릭대학교 의과대학 예방의학교실) ;
  • 김대종 (경동대학교) ;
  • 김현욱 (가톨릭대학교 의과대학 예방의학교실)
  • Received : 2014.11.04
  • Accepted : 2015.06.20
  • Published : 2015.06.30
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Abstract

Objectives: This study focused on three aspects: characterizing concentrations of airborne particles by size distributions and asbestos fibers generated by various building materials; analyzing the characteristics of fibers produced by each simulation and asbestos fibers released from ACBMs; and investigating correlations of airborne asbestos fibers and particles generated and association of particle and asbestos concentrations. Methods: We selected three ACBMs including an insulation board, cement asbestos slate and wallboard. We constructed 4 scenarios; a) crushing with a hammer; b) cutting with a industrial knife; c) brushing with a metal brush; and d) tightening & loosening with a hand drill. We implemented one simulation for 30 seconds followed by 30 seconds resting period. We repeated a total of 5 cycles for 5 minutes. Results: The highest concentration of particulate & fibrous matters was from crushing with a hammer in each scenario followed by brushing with a metal brush, cutting with a industrial knife, and tightening & loosening with a hand drill. For ACBMs studied, asbestos concentrations were highest from an insulation board followed by cement asbestos slate, and wallboard. No difference in terms of concentration was found between an insulation board and asbestos slate. Fibers with $5{\sim}20{\mu}m$ in length were included in 76~90% of total fibrous matters. The distribution of the straight form fibers was greater than that of the curl form. About 90% of $PM_{Total}$ released from ACBMs was consisted of $PM_{10}$ while only 10% of $PM_{Total}$ was $PM_{2.5}$. Particulate matters like $PM_{2.5}$ was significantly correlated with fibrous matters($R^2=0.81$). Conclusions: We found ACBMs can significantly release asbestos fibers as well as $PM_{2.5}$. Concentrations of asbestos generated by ACBMs were well correlated with $PM_{2.5}$.

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References

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