Indoor and outdoor air quality investigation at six residential buildings in Hong Kong
- Hong Kong Polytechnic Univ., Kowloon (Hong Kong). Dept. of Civil and Structural Engineering
The indoor air quality (IAQ) at six residential buildings in Hong Kong was investigated based on different locations and characteristics. IAQ parameters measured from October 1997 to January 1998 included temperature, relative humidity, CO{sub 2}, PM{sub 10}, HCHO, bacteria, SO{sub 2}, NO, NO{sub 2}, and CO. CO{sub 2}, PM{sub 10}, and HCHO were monitored for a 24-h period, and other IAQ pollutants were monitored continuously. IAQ pollutants at the six sites were below the Hong Kong Interim IAQ Guidelines except for PM{sub 10} and bacteria levels. Sites where tobacco smoking is permitted had the worst IAQ. During smoking, PM{sub 10} levels were as high as 2,153 {micro}g/m{sup 3}. All sites had bacteria levels below the recommended action level of 1,000 CFU/m{sup 3}. Three sites (North Point, Ngau Tau Kok, and Prince Edward), with relatively high bacteria levels, were buildings over 20 y old. Maximum CO{sub 2} levels detected were as high as 2.63 mL/L due to poor ventilation. The results indicated that IAQ at residential areas in Hong Kong should be constantly monitored and improved.
- OSTI ID:
- 684523
- Journal Information:
- Environment International, Journal Name: Environment International Journal Issue: 4 Vol. 25; ISSN ENVIDV; ISSN 0160-4120
- Country of Publication:
- United States
- Language:
- English
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