Dioxins in Air - Measurement Results of 2013
| Month | Sampling Date | Concentrations | |
|---|---|---|---|
| Central/Western | Tsuen Wan | ||
| January | 20-01-2013 | 0.070 | -- |
| 02-01-2013 | -- | 0.098 | |
| February | 01-02-2013 | 0.029 | -- |
| 19-02-2013 | -- | 0.041 | |
| March | 21-03-2013 | 0.071 | -- |
| 21-03-2013 | -- | 0.047 | |
| April | 02-04-2013 | 0.026 | -- |
| 02-04-2013 | -- | 0.018 | |
| May | 02-05-2013 | 0.020 | -- |
| 02-05-2013 | -- | 0.024 | |
| June | 19-06-2013 | 0.011 | -- |
| 19-06-2013 | -- | 0.010 | |
| July | 07-07-2013 | 0.008 | -- |
| 07-07-2013 | -- | 0.008 | |
| August | 06-08-2013 | 0.010 | -- |
| 18-08-2013 | -- | 0.009 | |
| September | 11-09-2013 | 0.025 | -- |
| 17-09-2013 | -- | 0.026 | |
| October | 05-10-2013 | 0.046 | -- |
| 05-10-2013 | -- | 0.054 | |
| November | 04-11-2013 | 0.063 | -- |
| 16-11-2013 | -- | 0.080 | |
| December | 10-12-2013 | 0.182 | -- |
| 16-12-2013 | -- | 0.059 | |
| Annual Average | 0.047 | 0.040 | |
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.