Table 1.
Indoor air quality survey of domestic household in Hong Kong during the months following the outbreak of the severe acute respiratory syndrome (SARS) in 2003.a
| Pollutants | IAQOb excellent class | 1999c |
2003 |
|
|---|---|---|---|---|
| July–October | Summer | Winter | ||
| RSP (μg/m3) | <20 | 150 | 67 | 76 |
| Carbon dioxide (ppm) | <2000 | 580 | 461 | 567 |
| Formaldehyde (μg/m3) | <30 | 14 | 77 | 14 |
| Benzene (μg/m3) | 4.7 | 0.3 | 4.8 | |
| Ethyl benzene (μg/m3) | 2.6 | 1.8 | 6.5 | |
| Toluene (μg/m3) | 52.1 | 19.7 | 17.4 | |
| Xylenes (μg/m3) | 8.4 | 6.4 | 12.5 | |
| Tetrachloroethylene (μg/m3) | 2.5 | 5.4 | 9.8 | |
| Bacteria | <500 | 730 | 134 | 796 |
a
IAQ was conducted by Acron International Technology Ltd. under innovation technology fund contract.
b
Guidance notes for the management of indoor air quality in offices and public places, Hong Kong Environmental Protection Department, The Government of HKSAR.
c
Living room data from Ref. [36].