Indoor Air Quality Comparison between Residential and Public Buildingsin Guiyang City of China

摘要

In order to assess indoor air quality (IAQ) in twodifferent-type buildings in Guiyang city, IAQmeasurements for 53 residential houses and 21public locations were conducted from Jul. 2003 toJan. 2005. T-test was used to process the monitoringdata and Air Quality Index (AQI) method was usedto assess the status quo of the two building types.The aggregative indexes got from AQI method were0.750 in residential buildings and 0.459 in publicbuildings. As to the twelve monitoring pollutants,eight of them had higher average concentrations inresidential houses than in public buildings. Thus itwas clear IAQ in public buildings was better thanthat in residential buildings on the whole. Thedifferent indoor conditions such as room square,ventilation, remodeling level, etc. and indoor sourceslike fuel burning in the kitchen and tobacco smokingcould be the main reasons for these differentconcentration levels.