Dioxins in Air - Measurement Results of 2018
| Month | Sampling Date | Concentrations | |
|---|---|---|---|
| Central/Western | Tsuen Wan | ||
| January | 20-01-2018 | 0.051 | -- |
| 20-01-2018 | -- | 0.049 | |
| February | 07-02-2018 | 0.086 | -- |
| 13-02-2018 | -- | 0.069 | |
| March | 09-03-2018 | 0.020 | -- |
| 21-03-2018 | -- | 0.049 | |
| April | 20-04-2018 | 0.019 | -- |
| 08-04-2018 | -- | 0.044 | |
| May | 08-05-2018 | 0.013 | -- |
| 26-05-2018 | -- | 0.009 | |
| June | 25-06-2018 | 0.009 | -- |
| 25-06-2018 | -- | 0.008 | |
| July | 25-07-2018 | 0.009 | -- |
| 13-07-2018 | -- | 0.009 | |
| August | 06-08-2018 | 0.009 | -- |
| 24-08-2018 | -- | 0.031 | |
| September | 05-09-2018 | 0.011 | -- |
| 17-09-2018 | -- | 0.008 | |
| October | 23-10-2018 | 0.024 | -- |
| 11-10-2018 | -- | 0.043 | |
| November | 10-11-2018 | 0.011 | -- |
| 22-11-2018 | -- | 0.031 | |
| December | 04-12-2018 | 0.009 | -- |
| 04-12-2018 | -- | 0.015 | |
| Annual Average | 0.023 | 0.030 | |
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.