Table 3.1 Hong Kong Air Quality Objectives
Parameter |
Maximum Average Concentration (µgm-3)1 |
||
1-Hour2 |
24-Hour3 |
Annual4 |
|
TSP |
5005 |
260 |
80 |
1 Measured at 298 K and 101.325 kPa.
2 Not to be exceeded more than three times per year.
3 Not to be exceeded more than once per year.
4 Arithmetic mean.
5 Not an AQO. However, in addition to the established legislative controls, it is generally accepted that an hourly average TSP concentration of 500 µgm-3 should not be exceeded.