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KMID : 1039220150250040584
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Journal of Korean Society of Occupational and Environmental Hygiene
2015 Volume.25 No. 4 p.584 ~ p.590
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Exposure Assessment of Airborne Quartz from Earthwork Sites
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Sung Eun-Chang
Bae Hye-Jeong
Jung Jong-Hyeon
Phee Young-Gyu
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Abstract
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Objectives: The purpose of this study was to evaluate quartz concentrations in airborne total and respirable dusts.
Materials: Respirable dust samples were collected using a 10 mm aluminum cyclone equipped with a 37 mm5 ㎛ pore size PVC filter. Total dust samples were collected with a three stage cassette from three work sections at earthwork sites located in the South Chungcheong-do Province area.
Results: The geometric means of quartz concentrations were 0.008 ㎎/㎥ and 0.004 ㎎/㎥ in total dust and respirable dust, respectively. The geometric means of quartz contents analyzed by FTIR were 3.74% in total dust and 3.16% in respirable dust. The geometric mean of quartz concentrations and contents in secondary blasting operations were higher than those in other operations.
Conclusions: Given that secondary blasting operations had higher quartz concentrations, there is a need to reduce respirable dust, such as through wet operations.
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KEYWORD
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concentration, earthwork, quartz
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