|
Hong
Kong Air Quality Objectives
The air
quality objectives for various air pollutants in µg/m3.
| Air
Pollutants |
1-hour
[1] |
8-hour
[2] |
24-hour
[2] |
3-month
|
1-year |
| Sulphur
dioxide |
800 |
-- |
350 |
-- |
80 |
| Nitrogen
dioxide |
300 |
-- |
150 |
-- |
80 |
| Carbon
monoxide |
30000 |
10000 |
-- |
-- |
-- |
| Ozone |
240 |
-- |
-- |
-- |
-- |
| Total
suspended particulates |
-- |
-- |
260 |
-- |
80 |
| Respirable
suspended particulates |
-- |
-- |
180 |
-- |
55 |
| Lead |
-- |
-- |
-- |
1.5 |
-- |
Note:
- Not
to be exceeded more than three times per year
- Not
to be exceeded more than once per year
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