Dioxins in Air - Measurement Results of 2010
| Month | Sampling Date | Concentrations | |
|---|---|---|---|
| Central/Western | Tsuen Wan | ||
| January | 06-01-2010 | 0.080 | -- |
| 18-01-2010 | -- | 0.073 | |
| February | 05-02-2010 | 0.025 | -- |
| 23-02-2010 | -- | 0.024 | |
| March | 07-03-2010 | 0.081 | -- |
| 25-03-2010 | -- | 0.1 | |
| April | 12-04-2010 | 0.012 | -- |
| 24-04-2010 | -- | 0.056 | |
| May | 24-05-2010 | 0.029 | -- |
| 12-05-2010 | -- | 0.023 | |
| June | 11-06-2010 | 0.040 | -- |
| 29-06-2010 | -- | 0.009 | |
| July | 11-07-2010 | 0.008 | -- |
| 29-07-2010 | -- | 0.009 | |
| August | 10-08-2010 | 0.009 | -- |
| 28-08-2010 | -- | 0.092 | |
| September | 09-09-2010 | 0.031 | -- |
| 27-09-2010 | -- | 0.017 | |
| October | 09-10-2010 | 0.039 | -- |
| 21-10-2010 | -- | 0.119 | |
| November | 08-11-2010 | 0.066 | -- |
| 20-11-2010 | -- | 0.058 | |
| December | 02-12-2010 | 0.119 | -- |
| 20-12-2010 | -- | 0.261 | |
| Annual Average | 0.045 | 0.070 | |
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.