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Exposure Assessment of Airborne Dust in Manufacturing Industries Using Silicon Carbide in Korea  

Lee, Jun Jung (Institute for Industrial Health, Daegu Haany University)
Phee, Young Gyu (Faculty of Health Science, Daegu Haany University)
Publication Information
Journal of Korean Society of Occupational and Environmental Hygiene / v.21, no.3, 2011 , pp. 177-183 More about this Journal
Abstract
Occupational exposure to silicon carbide dust of manufacturing industries has seldom been evaluated in Korea. Accordingly, we evaluated various silicon carbide dust concentrations in the breathing zone of workers between May 2010 and July 2010. To compare silicon carbide dust concentrations, three dust samplers including the Institute of Occupational Medicine (IOM) sampler, 37mm cassette sampler, and Aluminum cyclone sampler were used. A total of 5 manufacturing industries producing abrasive and refractory materials using silicon carbide were investigated. The geometric mean concentrations were 2.04, 0.97, and $0.48mg/m^3$ in inhalable, total and respirable silicon carbide dust, respectively. The geometric mean concentrations of silicon carbide in abrasive material manufacturing industries were slightly higher than that of refractory manufacturing industries, and finishing operations were higher than that of other operations. It was found that the results of exposure assessment in airborne dust at manufacturing industries using silicon carbide in Korea showed exceeding rate to American Conference of Governmental Industrial Hygienists Threshold Limit Value ($3mg/m^3$) was 10% in respirable dust samples. Therefore, with the consideration of the close relationship between smaller dust size and the occurrence of occupational respiratory diseases, it is suggested to promulgate the new occupational exposure limit for respirable silicon carbide dust.
Keywords
Silicon carbide; inhalable dust; total dust; respirable dust; exposure assessment;
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Times Cited By KSCI : 2  (Citation Analysis)
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