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Title: Investigation of indoor air quality at residential homes in Hong Kong - Case study
Authors: Lee, SC 
Li, WM
Ao, CH
Keywords: Home
Hong Kong
Indoor air quality
Suspended particulate matter (PM10)
Total bacteria count (TBC)
Volatile organic compounds (VOCs)
Issue Date: 2002
Publisher: Pergamon Press
Source: Atmospheric environment, 2002, v. 36, no. 2, p. 225-237 How to cite?
Journal: Atmospheric environment 
Abstract: Indoor air quality (IAQ) has been a matter of public concern in Hong Kong. Recently, the Hong Kong Government has recognized the potential risk and problems related to indoor air pollution, and it is striving to establish IAQ objectives for different types of indoor environments. This study attempts to provide more information about the present IAQ of local resident flats. Air pollutants measured in this study included carbon dioxide (CO2), respirable suspended particulate matter (PM10), formaldehyde (HCHO), volatile organic compounds (VOCs) and airborne bacteria. The results of this study indicate that the 8-h average concentrations of CO2 and PM10 in the domestic kitchens investigated were 14% and 67% higher than those measured in the living rooms. The indoor air pollution caused by PM10 was more serious in domestic kitchens than in living rooms as almost all of the kitchens investigated had higher indoor levels of PM10. The majority of the domestic living rooms and kitchens studied had average concentrations of airborne bacteria higher than 500CFU/m3. The mean total bacteria count recorded in kitchens was greater than that obtained in living rooms by 23%. In homes where occupants smoke, the negative impact of benzene, toluene and m, p-xylene on the IAQ was greatly enhanced. The use of liquefied petroleum gas (LPG) stove has more significant impact on indoor VOCs than the use of cooking stoves with natural gas as cooking fuel.
ISSN: 1352-2310
EISSN: 1873-2844
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