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Indoor Air Quality Assessment and
Control
A. Summary of activities
 The Indoor Air
Group has successfully completed several indoor air quality consultancy projects
for Cathay Pacific Airways Ltd. (CPA) both in aircraft environment and office
buildings at Chek Lap Kok. A Best Consultant Award has been given for the
contribution to the CPA's indoor air quality in 1997. In 1999, The Indoor Air
Group also completed a consultancy project for Ming Pao Newspaper Ltd. to
investigate the indoor air quality at shopping malls, offices, classrooms, and
residential flats in Hong Kong. The Group is equipped with most advanced indoor
air quality sampling and analysis systems such as canister sampling system with
Gas Chromatography coupled with Mass Spectrometer. An indoor air emission
chamber has been built for the study of various emissions (volatile organic
compounds, ozone, particulate, etc) from building materials and office equipment
in HK.
The
Government recognised the existence of potential health risk and problems
associated with indoor air pollution as spelt out in the White Paper on
Pollution in 1993. A consultancy study on Indoor Air Pollution in Offices and
Public Places was commissioned in 1995. The study was to characterize and
quantify the indoor air pollution in office premises and selected public places
in Hong Kong, assess the causes of the pollution problems, and recommend the
most suitable control strategy. The Hong Kong Government's initiative to improve
IAQ in Hong Kong premises will be taken forward by a special Management Group.
The Indoor Air Group has established collaborative links with international
academic community, including universities and institutes in Mainland China. The
Group is developing indoor air emission characterization which is in line with
the initiative of the United States Environmental Protection Agency on
"Healthy Buildings, Healthy People - A version for the 21st
century" for a more intensive promotion for the implementation of related
indoor air quality regulations in HK.
B. Representative projects
 | An
investigation of volatile organic compounds (VOCs) in urban area of Hong
Kong by using canister and GC-MS system.
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| A study on the human
exposure in diesel and LPG taxis in Hong Kong.
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| A study on the characterization
of indoor air pollution emissions from office equipment by using an
environmental chamber.
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| A study on the
characterization of indoor air pollution emissions from construction
materials by using an environmental chamber.
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| Exposure
and risk assessment of volatile organic compounds (VOC) in five selected
public buildings in Hong Kong.
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| Comparison
of outdoor and indoor volatile organic compounds under different ventilation
conditions of classrooms in Hong Kong.
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| Human
exposure to respirable suspended particulates in Hong Kong.
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| Indoor air quality
investigation at twenty public places in Hong
Kong.
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| Indoor
air quality investigation on Cathay Pacific Airway aircrafts.
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| Indoor air quality
investigation at Cathay Pacific Building at Chek
Lap Kok.
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IAQ
questionnaire survey with CPA cabin crew
IAQ measurement on CPA aircraft
C. Major facilities
VOC
preconcentrator with canister sampling system
IAQ Sampling & Analytical
equipment
IAQ emission chamber
D. Selected recent output
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Lee, S.
C., Chan L. Y. and Chiu M. Y., Indoor and Outdoor Air Quality Investigation
at 14 Public Places in Hong Kong, Environmental International, Vol. 25, no
4, pp. 443-450, 1999. |
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Lee, S. C., Chang M. and Chan, K. Y., Indoor and Outdoor Air Quality Investigation
at Six Residential
Buildings in Hong Kong, Environmental
International, Vol. 25, no 4, pp 489-496, 1999. |
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Lee, S. C., Poon, C. S., Li, X. D., and Luk, F., Indoor
Air Quality Investigation on Commercial Aircrafts, Indoor Air, Vol. 9,
pp180- 187, 1999.
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Lee, S. C., Koshland, C. P. Lucas, D. and Sawyer, R. F., Effect of Post-Flame Fuel Injection
on the Destruction of Chlorinated Hydrocarbons
and the Oxidation of NO, Combustion and Flame, Vol. 119,
pp. 154-160, 1999.
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Lee,
S. C., and Chang, M., Indoor and Outdoor Air Quality Investigation at
Schools in Hong Kong, Chemosphere, Vol. 41, pp 109-113, 2000.
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Li W.
M., Lee, S. C., and Chan, L. Y., Indoor Air Quality at Nine Shopping Malls
in HK, the Science of Total Environment, 2001. (In press)
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Yu, J.
C., Ho, K. F., and Lee, S. C., Determination of Lead in Fine Particulates by
Slurry Sampling Electro-thermal Atomic Absorption Spectrometry, Fresenius'
Journal of Analytical Chemistry, Vol. 369, no 2, pp. 170-175, 2001.
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Lee,
S.C., Zou, S. C., Ho, K.F., and Chan, L.Y., Direct Ultrasonic Agitation for
Rapid Extraction of Particulate Organic Matter from Air Aerosol, Fresenius'
Journal of Analytical Chemistry, Vol. 369, no 2, pp. 166-169, 2001.
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Lee,
S. C., Lam, S., Ho, K. F., Characterization of VOCs, Ozone, and PM10
Emissions from Office Equipment in an Environmental Chamber, Building and
Environment, 2001. (In press)
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Chan, L. Y., Kwok, W. S., Lee, S. C., and Chan, C. Y., Spatial Variations
of Mass Concentration of Roadside Suspended Particulate Matter in
Metropolitan Hong Kong, Atmosphere Environment, 2001. (In press)
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Li, W.
M., Lee, S. C., and Chan, L. Y., Indoor Air Quality Investigation at
Restaurants with Different Styles of Cooking in Metropolitan HK, the Science
of Total Environment, 2001. (In press)
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Wang, X. M., Lee,
S.
C., Sheng, G.
Y., Chan, L.
Y., Fu, J.
M., Li, X.
D., Ming Y.S., and Chan, C. Y., Cyclic
Organosilicon Compounds in Ambient Air in Guangzhou, Macau and Nanhai, Pearl
River Delta,
accepted by Applied Geochemistry, 2001.
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Lam K.S., Wang T.J., Chan L.Y.,
Wang T. and Harris J., Flow patterns influencing the seasonal behavior of surface
ozone and carbon monoxide at a coastal site near Hong Kong, Atmospheric
Environment, in press.
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Cheng ZL, Lam KS, Chan LY, Wang T, Cheng KK, Chemical
characteristics of aerosols at coastal station in Hong Kong. I. Seasonal
variation of major ions, halogens and mineral dusts between 1995 and 1996, Atmospheric
Environment, vol.34, No17, pp. 2771-2783 , 2000. |
E. Contact person
Dr.
S. C. Lee, Associate Professor
Tel:
(852) 2766 6011; Fax: (852) 2334
6389; E-mail: ceslee@polyu.edu.hk
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