Dioxins in Air - Measurement Results of 2005
| Month | Sampling Date | Concentrations | |
|---|---|---|---|
| Central/Western | Tsuen Wan | ||
| January | 08-01-2005 | -- | 0.093 |
| 14-01-2005 | 0.116 | -- | |
| February | 19-02-2005 | -- | 0.068 |
| 25-02-2005 | 0.050 | -- | |
| March | 09-03-2005 | -- | 0.041 |
| 23-03-2005 | 0.122 | -- | |
| April | 14-04-2005 | -- | 0.049 |
| 20-04-2005 | 0.132 | -- | |
| May | 08-05-2005 | -- | 0.062 |
| 26-05-2005 | 0.044 | -- | |
| June | 07-06-2005 | 0.036 | -- |
| 19-06-2005 | -- | 0.035 | |
| July | 07-07-2005 | -- | 0.072 |
| 19-07-2005 | 0.100 | -- | |
| August | 12-08-2005 | -- | 0.123 |
| 24-08-2005 | 0.047 | -- | |
| September | 11-09-2005 | 0.098 | -- |
| 29-09-2005 | -- | 0.054 | |
| October | 05-10-2005 | -- | 0.081 |
| 23-10-2005 | 0.091 | -- | |
| November | 10-11-2005 | -- | 0.035 |
| 30-11-2005 | 0.074 | -- | |
| December | 10-12-2005 | 0.069 | -- |
| 22-12-2005 | -- | 0.136 | |
| Annual Average | 0.082 | 0.071 | |
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.