[The installing method and sterilizing effect of ultraviolet lamp].

ABSTRACT

Among the four types of installing method and sterilizing effect of ultraviolet lamp in China and abroad, the non-shaded suspending type was the best in this study. In a 24. 5m3 dress changing room, the bacterial numbers reached less than III class standard after one hour of irradiation. The shaded suspending type, the mobile cart-pushing type and the fixed wall-adhesive type decreased the sterilizing effect due to the obstruction of 20% approximately 40% ultraviolet irradiation by the back space of the lamp shade, and it took two hours of sterilization to reach the III class standard which maintained only one hour, Therefore, there was significant differences between the sterilizing effect of the non-shaded suspending type and that of other installing methods.