Dioxins in Air - Measurement Results of 2008
| Month | Sampling Date | Concentrations | |
|---|---|---|---|
| Central/Western | Tsuen Wan | ||
| January | 05-01-2008 | 0.061 | -- |
| 17-01-2008 | -- | 0.184 | |
| February | 04-02-2008 | 0.085 | -- |
| 16-02-2008 | -- | 0.101 | |
| March | 05-03-2008 | 0.062 | -- |
| 17-03-2008 | -- | 0.034 | |
| April | 10-04-2008 | 0.016 | -- |
| 22-04-2008 | -- | 0.067 | |
| May | 04-05-2008 | 0.016 | -- |
| 22-05-2008 | -- | 0.056 | |
| June | 12-06-2008 | 0.009 | -- |
| 21-06-2008 | -- | 0.022 | |
| July | 09-07-2008 | 0.010 | -- |
| 21-07-2008 | -- | 0.008 | |
| August | 02-08-2008 | 0.009 | -- |
| 20-08-2008 | -- | 0.032 | |
| September | 07-09-2008 | 0.025 | -- |
| 25-09-2008 | -- | 0.009 | |
| October | 07-10-2008 | 0.059 | -- |
| 19-10-2008 | -- | 0.038 | |
| November | 06-11-2008 | 0.021 | -- |
| 18-11-2008 | -- | 0.108 | |
| December | 06-12-2008 | 0.120 | -- |
| 23-12-2008 | -- | 0.085 | |
| Annual Average | 0.041 | 0.062 | |
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.