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KMID : 0895420140240020113
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Journal of Korean Society of Occupational and Enviromental Hygiene
2014 Volume.24 No. 2 p.113 ~ p.121
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A Study on the Efficient Measurement of Airborne Asbestos Concentrations at Demolition Sites of Asbestos Containing Buildings, etc. in Seoul
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Lee Jin-Hyo
Lee Su-Hyun
Kim Jeong-Yeun
Kim Ji-Hui
Chung Sook-Nye
Kim Jin-A
Oh Seok-Ryul
Kim Ik-Soo
Shin Jin-Ho
Eo Soo-Mi
Jung Kweon
Lee Jin-Sook
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Abstract
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Objectives: This study is intended to seek credible and efficient measurements on airborne asbestos concentrations that allow immediate action by establishing complementary data through comparative analysis with existing PCM and KF-100 methodreal-time monitoring equipment in working areas in Seoul where asbestos-containing buildings are being demolished, including living environment surroundings.
Materials: We measured airborne asbestos concentrations using PCM and KF-100 at research institutes, monitoring networks, subway stations and demolition sites of asbestos-containing buildings. Through this measurement data and KF-100 performance testing, we drew a conversion factor and applied it via KF-100. Finally we verified the relationship between PCM and KF-100 with statistical methods.
Results: The airborne asbestos concentrations by PCM for the objects of study were less than the detection limit(7 fiber/mm2) in three (20%) out of 15 samples. The highest concentration was 0.009 f/cc. The airborne asbestos concentrations by PCM in laboratories, monitoring networks, subway stations and demolition sites of asbestos-containing buildings were respectively 0.002±0.000 f/cc, 0.004±0.001 f/cc, 0.009±0.001 f/cc, and 0.002±0.000 f/cc. As a result of KF-100 performance testson rooftops, the conversion factor was 0.1958. Applying the conversion factor to KF-100 for laboratories, the airborne asbestos concentrations ratio of the two ways was nearly 1:1.5(R2=0.8852). Also,the airborne asbestos concentration ratio of the two ways was nearly 1:1(R2=0.9071) for monitoring networks, subway stations, and demolition sites of asbestos-containing buildings. As a result of independent sample t-tests, there was no distinction between airborne asbestos concentrations monitored in the two ways.
Conclusions: In working areas where asbestos-containing buildings are being demolished, including living environment surroundings, quickly and accurately monitoring airborne asbestos scattered in the air around the working area is highly important. For this, we believea mutual interface of existing PCM and a real-time monitoring equipment method is possible.
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KEYWORD
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Asbestos, asbestos containing buildings, conversion factor, PCM, real-time monitoring
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