Abstract
The present study aimed to find indicators to improve indoor air quality by measuring and evaluating formaldehyde in residential environments and analyzing household living patterns to determine whether residents suffer from environmental diseases. The average household concentration was 30.7 µg/m3. The average concentration in remodeled households was 38.8 µg/m3, which was higher than in households that had not been remodeled. Formaldehyde concentrations were higher in households residing at ground level than those in households based in underground spaces. The average concentration of households that had moved into their homes within the previous year were the highest at 43.5 µg/m3 with the concentrations gradually decreasing over time after move-in. Formaldehyde concentrations were higher in households that conducted ventilation 2-3 times per weekly (43.9 µg/m3) than those that conducted ventilation daily (26.1 µg/m3). The average concentration of the households that had experienced atopy was higher (36.7 µg/m3) compared to the households that had not (26.4 µg/m3).
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