Dioxins in Air - Measurement Results of 2006
| Month | Sampling Date | Concentrations | |
|---|---|---|---|
| Central/Western | Tsuen Wan | ||
| January | 09-01-2006 | 0.088 | -- |
| 21-01-2006 | -- | 0.092 | |
| February | 02-02-2006 | 0.054 | -- |
| March | 04-03-2006 | -- | 0.086 |
| 22-03-2006 | 0.135 | -- | |
| April | 09-04-2006 | -- | 0.042 |
| 27-04-2006 | 0.035 | -- | |
| May | 09-05-2006 | 0.035 | -- |
| 27-05-2006 | -- | 0.043 | |
| June | 08-06-2006 | -- | 0.036 |
| 20-06-2006 | 0.036 | -- | |
| July | 08-07-2006 | -- | 0.036 |
| 26-07-2006 | 0.050 | -- | |
| August | 07-08-2006 |
0.036 |
-- |
| 25-08-2006 | -- | 0.036 | |
| September | 06-09-2006 | -- | 0.036 |
| 18-09-2006 | 0.070 | -- | |
| October | 12-10-2006 | -- | 0.055 |
| 24-10-2006 | 0.051 | -- | |
| November | 05-11-2006 | 0.045 | -- |
| 23-11-2006 | -- | 0.169 | |
| December | 05-12-2006 | -- | 0.097 |
| 17-12-2006 | 0.082 | -- | |
| Annual Average | 0.060 | 0.066 | |
NOTE :
- Figures are 24-hour average concentrations on the day of sampling in pg I-TEQ /m3.
- The concentration of dioxins is expressed as toxic equivalent (I-TEQ) concentration of 2,3,7,8 - Tetrachlorodibenzodioxin (TCDD) based on the International Toxic Equivalent Factors (I-TEF) of the North Atlantic Treaty Organization (NATO/CCMS).
- For congener concentrations that are lower than the estimated minimum sample detectable level (EMSDL), one half of the EMSDL is used in calculating the I-TEQ concentration.