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초록

Phase contrast microscopy(PCM) was used in this study to detect fibrous material. Then, transmission electron microscopy(TEM) was performed for samples whose asbestos emission levels exceeded the permissible emission levels(≥ 0.01 f/cc). The test determined the presence of asbestos fibers in the samples and the fiber type, length, and width. The airborne fibrous material concentration around the asbestos abatement worksite is higher than that around the asbestos waste storage site and the surroundings of the asbestos abatement worksite(p 0.05), indicating that asbestos abatement work has a fundamental effect on the generation of airborne fibrous material. When the airborne fibrous material generated by indoor and outdoor working conditions were compared, depending on the asbestos containing material, the indoor fibrous material concentration was slightly higher than the outdoor concentration; however, the difference was not significant(p 0.05). A 1.3% of the total airborne sample excee