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[Studies on hygienic standard for ozone in indoor air]
1Department of Environmental Health, Sun Yat-sen University of Medical Sciences, Guangzhou.
Objective:
To formulate a national hygienic standard for ozone in indoor air.
Methods:
Indoor air ozone concentrations at variety of places were detected at its peak level in the daytime. Also, animal experiments exposed to low-level ozone were conducted to study the contents of lipid peroxide in the lungs, the ultrastructure of the bronchial epithelium and the phagocyte function of peritoneal macrophage.
Results:
Safety of ozone concentration of 0.1 mg/m3 in indoor air and feasibility to use it as hygienic standard were tested and proved.
Conclusion:
The national hygienic standard for ozone in indoor air is recommended at 0.1 mg/m3 based on the data and relevant criteria at home and abroad.