A source apportionment analysis was performed using the elemental species concentrations of the air particu late samples collected in 8 homes from October 1999 to March 2000. It was based on a chemical mass balance approach using the source profiles from five common sources found in Hong Kong homes. These five sources were smoking, cooking, incense burning, human activi ties and outdoor contribution. Seventeen elements were analysed in the particulate samples collected by proton- induced X-ray emission. The results showed that cook ing contributed on average 61.9% of the total indoor PM2.5 in the 8 homes with 31.9% on average contributed from the outdoors. In contrast, the major contributor to the indoor PM10 load was the outdoor contribution, which was 49.3% on average followed by human activi ties, which totalled 29.9% on average.
Miller MS, Friedlander SK, Hidy GM: A chemical element balance for the Pasadena aerosol. J Colloid Interface Sci1972;39:165-176.
2.
Friedlander SK: Chemical element balances and identification of air pollution sources. Environ Sci Technol1973;7:235-240.
3.
Artaxo P., Oyola P., Martinez R.: Aerosol composition and source apportionment in Santiago de Chile . Nucl Instrum Methods Phys Res. Section B, Beam interactions with Materials and Atoms1999;150:409-416.
4.
Formenti P., Annegarn HJ, Prati P., Zucchiatti A., Lucarelli F., Mando PA: Source apportionment by receptor models in a study of Genova aerosol via streaker sampling and PIXA analysis. Physica Medica1997;13:101-109.
5.
Olmez I.: Trace element signatures in groundwater pollution; in Proc Receptor Models of Air Resources Management. Pittsburgh , Air and Waste Management Association, 1988, pp 3-11.
6.
Samtanam S., Spengler JD: Source apportionment of indoor aerosols: A study at the United States cities . 82nd Annu Meet Exhibition. Anaheim, Air and Waste Management Association, 1989.
7.
Nitta H., Ichikawa M., Sato M., Konishi S., Ono M.: New approach based on a covariance structure model to source apportionment of indoor fine particles in Tokyo. Atmos Environ1994; 28:631-636.
8.
Lewis CW, Zweidinger RB: Apportionment of residential indoor aerosol, VOC and aldehyde species to indoor and outdoor sources, and their source strengths. Atmos Environ1992; 26A:2179-2184.
9.
Sexton K., Hayward SB: Source apportionment of indoor air pollution. Atmos Environ1987; 32:407-418.
10.
Yakovleva E. , Hopke PK: Receptor modeling assessment of particle total exposure assessment methology data. Environ Sci Technol1999;33:3645-3652.
11.
Robinson J., Nelson WC: National Human Activity Pattern Survey Data Base. Research Triangle Park, US Environmental Protection Agency, 1995.
12.
Air Quality Criteria for Particulate Matter. EPA/600/P-95/001 . Washington, US Environmental Protection Agency, Office of Research and Development, 1996, vol I-III.
13.
Harrison RM , Smith Djt, Pio CA, Castro LM: Comparative receptor modeling study of airborne particulate pollutants in Birmingham (United Kingdom), Coimbra (Portugal) and Lahore (Pakistan). Atmos Environ1997;31: 3309-3321.
14.
Harrison RM , Yin J.: Particulate matter in the atmosphere: Which particle properties are important for its effects on health?Sci Total Environ2000;249:85-101.
15.
Abbey DE, Ostro BE, Petersen F., Burchette RJ: Chronic respiratory symptoms associated with estimated long-term ambient concentrations of fine particulates less than 2.5 microns in aerodynamic diameter (PM2.5) and other air pollutants. J Expo Anal Environ Epidemiol1995;5: 137-159.
16.
Schwartz J. , Dockery DW, Neas LM: Is daily mortality associated specifically with fine particles ?J Air Waste Manage Assoc1996;46: 927-939.
17.
Watson JG, Chow JC, Lu Z., Fujita M., Lowenthal DH, Lawson DR, Ashbaugh LL: Chemical mass balance source apportionment of PM10 during the Southern California Air Quality Study. Aerosol Sci Technol1994;21:1-36.
18.
Hopke PK: Receptor Modeling in Environmental Chemistry. New York , Wiley, 1985.
19.
Ehrman S., Pratsinis SE: Receptor modeling of the fine aerosol at a residential Los Angeles site. Atmos Environ1992;26B:473-481.
20.
Rojas CM, Artaxo P., Grieken RV: Aerosols in Santiago De Chilie: A study using receptor modeling with X-ray fluorescence and single particle analysis. Atmos Environ1990; 24B:227-241.
21.
Dols WS, Persily AK: Study of the Ventilation Measurement in an Office Building. ASTM Special Technical Publication. Philadelphia, ASTM , 1995, pp 23-46.
22.
Farant JP, McKinnon DL, McKenna TA: Tracer gases as a ventilation tool: Methods and instrumentation. Chem Eng Monogr. Amsterdam, Elsevier , 1985, vol 24.
23.
Thatcher TL, Layton DW: Deposition, resuspension and penetration of particles within a residence . Atmos Environ1995 ;29:1487-1489.
24.
Chao Cyh: Study of Indoor Particulate Levels in Domestic Building. Final Report to the Environmental Conservation Fund, Project No 18/97, 2000.
25.
Lange C., Roed J., Byrne MA, Goddard Ajh: Indoor aerosol deposition studies using rare-earth tagged particles. J AerosolSci1994;25: S571-572.
26.
Koutrakis P. , Briggs Slk, Leaderer BP: Source apportionment of indoor aerosols in Suffolk and Onondaga Countries, New York. Environ Sci Technol1992;26:521-527.
27.
Jones NC, Thornton CA, Mark D., Harrison RM: Indoor/outdoor relationships of particulate matter in domestic homes with roadside, urban and rural locations. Atmos Environ2000;34:2603-2612.
28.
Spengler JD , Dockery DW, Turner WA, Wolf-son JM, Ferris BGJr: Long-term measurements of respirable sulphates and particles inside and outside homes. Atmos Environ1981; 15:23-30.
29.
Chao Cyh, Tung Tcw, Burnett J.: Influence of different indoor activities on the indoor particulate levels in residential buildings. Indoor Built Environ1998;7:110-121.
30.
Philips K., Howard DA, Bentley MC, Alvan G.: Assessment of environmental tobacco smoke and respirable suspended particle exposures for nonsmokers in Hong Kong using personal monitoring. Environ Int1998;24:851-870.
31.
Long CM, Suh HH, Koutrakis P.: Characterization of indoor particle sources using continuous mass and size monitors. J Air Waste Manage Assoc2000;50:1236-1250.
