FIELD SERVEY ON INDOOR AIR POLLUTION AND FACTOR CAUSING SYMPTOM IN SICK HOUSES

摘要

In order to determine the factors of causes of SHS, a field survey on indoor air quality and occupants' health conditions was investigated in 53 sick houses. In conclusion, concentrations of formaldehyde in 66%, acetaldehyde in 78% and TVOC in 60% of rooms exceeded the Japanese guidelines, respectively. While VOC concentrations decreased as building age increased, carbonyl compound concentrations hardly changed. There are many houses where air change rate did not satisfy the required value, 0.5 h{sup}(-1), of the Building Standard Law of Japan, in which chemical substance concentration tend to be very high. Concerning health conditions, many occupants reported eye irritation and coughing. However, the relationship between chemical substance concentration and subjective symptoms is not clear and the causes of symptoms are different between individuals.