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최윤호 ( Yun Ho Choi ),김남준 ( Nam Jun Kim ),황범구 ( Beom Goo Hwang ),이재형 ( Jae Hyung Lee ),선일식 ( Yle Shik Sun ) 한국환경분석학회 2012 환경분석과 독성보건 Vol.15 No.1
In this study we observed microscopic characteristics of asbestos at different temperatures for different periods of exposure of asbestos containing material (ACM) using X-ray diffraction (XRD) and polarizing light microscopy (PLM). We observed the destruction of chrysotile crystal structure starting at 600oC using XRD and using PLM the Chrysotile fibers were heated at 1100oC for ten minutes resulting in parallel and perpendicular refractive indexes of 1.650 and 1.658 respectively. The sign of elongation was also changed from positive to negative. The results observed in this study may be useful for the quantitative analysis of asbestos which were denatured by the exposure to fire.
김남준 ( Nam-jun Kim ),곽주현 ( Ju-hyun Kwak ),김지호 ( Ji-ho Kim ),이재형 ( Jae-hyung Lee ),황범구 ( Beom-goo Hwang ),맹은호 ( Eun-ho Maeng ),선일식 ( Yle-shik Sun ) 한국환경분석학회 2016 환경분석과 독성보건 Vol.19 No.2
In compliance with the Ministry of Environment’s Asbestos Safety Management Act (enforced on 4. 28. 2012), the building owners are required to carry out asbestos building survey. Depending on the results of the surveys, the owners of such buildings need to implement necessary measures such as repairs, sealing, or closure of the relevant areas. In this study, a test for asbestos scattering limit on asbestos head lining and scattering tests before and after applying a scattering inhibitor on a subject target were implemented. The result of the asbestos scattering limit test confirmed the possibility of asbestos scattering on both the front and back side of the interior material. Tests regarding the efficiency of the scattering inhibitor showed that in the absence of the scattering inhibitor, the detected asbestos concentration exceeded the limit prescribed as per the indoor air quality guidelines; however, with the application of two types of scattering inhibitors, the asbestos concentration in the indoor air was less than the prescribed limit. These results confirmed that the asbestos scattering inhibitor is effective in suppressing the spattering of asbestos; however, it will be necessary to have regulatory controls such as the obligatory use of scattering inhibitor after development of which can prevent all asbestos scattering inhibitor. The results of this study are expected to be utilized as base data for both the maintenance and development of various management programs aimed at an effective maintenance of asbestos building material.