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.