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Objectives: The purpose of this study is to assess the exposure level to dust and airborne microorganisms among employed workers in a clothing shopping center. Materials and Methods: On-site investigation of a clothing shopping center was performed between October and November 2012. The hazardous substances measured in this study are particulate matter(Total dust, respirable dust) and airborne microorganisms (Total airborne bacteria, total airborne fungi). Results: The highest geometric mean levels of particulate matter(total dust, respirable dust) for personal sampling were 1.735(SD:0.883) ㎎/㎥ for total dust and 0.0711(SD:0.008) ㎎/㎥ for respirable dust, respectively. Those for area sampling were 0.625(SD:0.091) ㎎/㎥ for total dust and 0.0718(SD:0.012) ㎎/㎥ for respirable dust, respectively. The highest geometric averaged concentrations of airborne microorganisms(Total airborne bacteria, total airborne fungi) were detected at 1,181(SD:105) cfu/㎥ for total airborne bacteria and 683(SD:114) cfu/㎥ for total airborne fungi, respectively. Concentrations of particulate matters and airborne microorganism in clothes shopping center did not correlate significantly with environmental factors such as temperature or relative humidity. Conclusions: Exposure levelshave not been established for service workers. Thus, health risk assessment for this group is very difficult. Health guidelines for service workers should be established as soon as possible.

Exposure Assessment of Dust and Airborne Microorganisms among Workers in a Clothing Shopping Center