Dioxins in Air - Measurement Results of 2012
| Month | Sampling Date | Concentrations | |
|---|---|---|---|
| Central/Western | Tsuen Wan | ||
| January | 14-01-2012 | 0.095 | -- |
| 02-01-2012 | -- | 0.060 | |
| February | 19-02-2012 | 0.048 | -- |
| 01-02-2012 | -- | 0.023 | |
| March | 02-03-2012 | 0.028 | -- |
| 20-03-2012 | -- | 0.048 | |
| April | 01-04-2012 | 0.037 | -- |
| 19-04-2012 | -- | 0.042 | |
| May | 01-05-2012 | 0.008 | -- |
| 19-05-2012 | -- | 0.012 | |
| June | 06-06-2012 | 0.013 | -- |
| 18-06-2012 | -- | 0.009 | |
| July | 06-07-2012 | 0.008 | -- |
| 18-07-2012 | -- | 0.008 | |
| August | 17-08-2012 | 0.01 | -- |
| 05-08-2012 | -- | 0.011 | |
| September | 16-09-2012 | 0.062 | -- |
| 04-09-2012 | -- | 0.01 | |
| October | 04-10-2012 | 0.04 | -- |
| 16-10-2012 | -- | 0.026 | |
| November | 21-11-2012 | 0.055 | -- |
| 03-11-2012 | -- | 0.036 | |
| December | 21-12-2012 | 0.060 | -- |
| 03-12-2012 | -- | 0.056 | |
| Annual Average | 0.039 | 0.028 | |
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.