Dioxins in Air - Measurement Results of 2015
| Month | Sampling Date | Concentrations | |
|---|---|---|---|
| Central/Western | Tsuen Wan | ||
| January | 26-01-2015 | 0.098 | -- |
| 08-01-2015 | -- | 0.055 | |
| February | 07-02-2015 | 0.114 | -- |
| 13-02-2015 | -- | 0.051 | |
| March | 15-03-2015 | 0.021 | -- |
| 27-03-2015 | -- | 0.080 | |
| April | 26-04-2015 | 0.017 | -- |
| 02-04-2015 | -- | 0.016 | |
| May | 08-05-2015 | 0.008 | -- |
| 14-05-2015 | -- | 0.009 | |
| June | 19-06-2015 | 0.008 | -- |
| 25-06-2015 | -- | 0.009 | |
| July | 25-07-2015 | 0.008 | -- |
| 07-07-2015 | -- | 0.044 | |
| August | 06-08-2015 | 0.009 | -- |
| 12-08-2015 | -- | 0.010 | |
| September | 17-09-2015 | 0.015 | -- |
| 23-09-2015 | -- | 0.009 | |
| October | 23-10-2015 | 0.026 | -- |
| 05-10-2015 | -- | 0.009 | |
| November | 04-11-2015 | 0.058 | -- |
| 16-11-2015 | -- | 0.017 | |
| December | 16-12-2015 | 0.050 | -- |
| 22-12-2015 | -- | 0.033 | |
| Annual Average | 0.036 | 0.029 | |
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.