Dioxins in Air - Measurement Results of 2003
Dioxins in Air - Measurement Results of 2003
Month |
Sampling Date
|
Concentrations |
Central/Western
|
Tsuen Wan
|
January |
6-1-2003 |
0.123 |
0.114 |
18-1-2003 |
0.067 |
0.060 |
February |
7-2-2003 |
0.042 |
0.035 |
23-2-2003 |
0.140 |
-- |
March |
1-3-2003 |
0.044 |
-- |
26-3-2003 |
0.074 |
-- |
April |
12-4-2003 |
0.036 |
-- |
24-4-2003 |
0.041 |
-- |
May |
6-5-2003 |
0.036 |
-- |
18-5-2003 |
0.098 |
-- |
June |
11-6-2003 |
0.036 |
-- |
23-6-2003 |
0.036 |
0.044 |
July |
5-7-2003 |
0.036 |
0.037 |
17-7-2003 |
0.035 |
0.037 |
August |
10-8-2003 |
0.036 |
0.037 |
22-8-2003 |
0.051 |
0.047 |
September |
3-9-2003 |
0.036 |
0.043 |
15-9-2003 |
0.036 |
0.036 |
October |
9-10-2003 |
0.062 |
0.061 |
21-10-2003 |
0.064 |
0.072 |
November |
2-11-2003 |
0.177 |
0.218 |
14-11-2003 |
0.088 |
0.085 |
December |
8-12-2003 |
0.111 |
0.103 |
20-12-2003 |
0.075 |
0.109
|
Annual Average
|
0.066 |
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
|