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Friable Test and Risk Assessment for Asbestos in Soils using the Releasable Asbestos Sampler (RAS)

석면 비산 장비를 이용한 토양 중 석면 비산 특성 및 위해성 평가

  • Kim, In Ja (Department of Energy and Mineral Resources Engineering, Sejong University) ;
  • Kim, Jeong-Wook (Department of Energy and Mineral Resources Engineering, Sejong University) ;
  • Ryu, Hyun Sik (Department of Energy and Mineral Resources Engineering, Sejong University) ;
  • Jung, Myung Chae (Department of Energy and Mineral Resources Engineering, Sejong University)
  • 김인자 (세종대학교 에너지자원공학과) ;
  • 김정욱 (세종대학교 에너지자원공학과) ;
  • 류현식 (세종대학교 에너지자원공학과) ;
  • 정명채 (세종대학교 에너지자원공학과)
  • Received : 2012.08.11
  • Accepted : 2012.09.24
  • Published : 2012.10.31

Abstract

The objective of this study is to examine a releasable asbestos sampler developed for measuring friable asbestos from soil to air controlled by wind velocity and water contents. Asbestos contaminated soil with 3.75% at the Sinsuk-asbestos mine was sampled, air-dried and sieved to 100 mesh, then homogenized during 24 hours' agitation. Various wind velocities, 1 m/s, 2 m/s, 3 m/s, and 5 m/s, were applied to evaluate releasable characteristics of the releasable asbestos sampler. In addition, soils with 1.0%, 3.4%, 4.4%, 11.0%, 16.2%, and 20.0% of water contents were also examined the amount of friable asbestos by the releasable asbestos sampler. Collected soil and air samples were analyzed by polarized light microscopy (PLM) and phase contrast microscopy (PCM), respectively. Those contents were applied to calculate an excess life cancer risk (ELCR). This study also discussed the relationship with risk assessment by a weeding scenario of activity based sampling (ABS) and field applied releasable asbestos sampler. The result was shown that friability of asbestos in soil increased with wind velocity and decreased with water content. In comparison with ELCR results, over 10E-4 of cancer risk was found in condition on < 5% water content and > 3m/s wind velocity.

Keywords

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