Dioxins in Air - Measurement Results of 2000
| Month |
Sampling Date
|
Concentrations |
|
Central/Western
|
Tsuen Wan
|
| January |
10-1-2000 |
0.054 |
0.067 |
| 16-1-2000 |
0.105 |
0.256 |
| 19-1-2000 |
0.047 |
-- |
| February |
2-2-2000 |
0.093 |
-- |
| 9-2-2000 |
-- |
0.045 |
| 15-2-2000 |
0.053 |
0.050 |
| March |
4-3-2000 |
0.043 |
0.073 |
| 22-3-2000 |
0.037 |
0.045 |
| April |
3-4-2000 |
0.061 |
0.061 |
| 19-4-2000 |
0.036 |
0.036 |
| May |
9-5-2000 |
0.035 |
-- |
| 21-5-2000 |
0.047 |
0.044 |
| 24-5-2000 |
-- |
0.036 |
| June |
2-6-2000 |
0.036 |
0.036 |
| 14-6-2000 |
0.036 |
0.036 |
| July |
3-7-2000 |
0.036 |
0.036 |
| 20-7-2000 |
0.037 |
0.036 |
| August |
6-8-2000 |
0.036 |
0.036 |
| 18-8-2000 |
0.047 |
0.036 |
| September |
6-9-2000 |
0.035 |
0.035 |
| 24-9-2000 |
0.035 |
0.036 |
| October |
6-10-2000 |
0.035 |
0.037 |
| 18-10-2000 |
0.062 |
0.129 |
| November |
21-11-2000 |
0.117 |
-- |
| 23-11-2000 |
-- |
0.088 |
| 29-11-2000 |
0.044 |
-- |
| December |
2-12-2000 |
-- |
0.075 |
| 5-12-2000 |
0.053 |
0.057 |
| 18-12-2000 |
0.056 |
0.070 |
|
Annual Average
|
0.051 |
0.061 |
|
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
|
