Abstract
An investigation of formaldehyde, VOC and SVOC was performed in both new and old apartment houses both before and after revision of Building Standard Law of Japan to examine a relation between them and aging changes, climate, air change rate and sampling condition. These results were considered gather with that in a pilot house from viewpoints which contributes to improvement of indoor air quality. Temperature/humidity characteristics of formaldehyde concentration, concentration decrease characteristics of each VOC species, evaluation of α -Pinene from wood-based materials and an evaluation method of TVOC were considered. Sampling condition of formaldehyde and reduction in amounts of tick pill used for tatami were proposed. Practical characteristics of a sanitary ventilator and the effect of sampling timing after window-shut on the measurement value of concentration were considered. Formaldehyde concentrations in resident houses were compared with that in nonresident house, and the influence to the formaldehyde concentration of the thermal condition was made clear to measure air of the top, middle and first floor in some multistory apartment houses.
