EFFECT OF 'BAKE-OUT' AS ONE OF THE MEASURES AGAINST INDOOR AIR POLLUTION IN WOODEN RESIDENCES

Abstract

Indoor air pollution by chemical substances from construction materials has caused health hazard. Bake-out is one of indoor air pollution measures. However, there is a case which bake-out is not effective on reduction of chemical substances emission from construction materials. The aim of this study is to clarify an effective range of chemical concentration in indoor air for bake-out. We experimented with actual residences. On the actual residences, in case of over 1700μg/m^3 TVOC concentration, it was reduced about 30% by bake-out. On the other hand, in case of under 80μg/m^3, it was reduced about 10%. Moreover, HCHO concentration was reduced 20% even under 30ppb.