Dioxins in Air - Measurement Results of 2002
Dioxins in Air - Measurement Results of 2002
Month |
Sampling Date
|
Concentrations |
Central/Western
|
Tsuen Wan
|
January |
11-1-2002
|
0.129 |
0.105 |
29-1-2002
|
0.041 |
0.035 |
February |
16-2-2002
|
0.037 |
0.036 |
28-2-2002
|
0.044 |
0.041 |
March |
18-3-2002
|
0.037 |
0.035 |
30-3-2002
|
0.249 |
0.345 |
April |
11-4-2002
|
0.037 |
0.058 |
23-4-2002
|
0.036 |
0.039 |
May |
5-5-2002
|
0.036 |
0.035 |
17-5-2002
|
0.035 |
0.040 |
June |
4-6-2002
|
0.036 |
0.035 |
22-6-2002
|
0.035 |
0.036 |
July |
4-7-2002
|
0.059 |
0.099 |
22-7-2002
|
0.035 |
0.035 |
August |
9-8-2002
|
0.036 |
0.036 |
21-8-2002
|
0.036 |
0.035 |
September |
8-9-2002
|
0.055 |
0.059 |
26-9-2002
|
0.042 |
0.047 |
October |
8-10-2002
|
0.077 |
0.038 |
20-10-2002
|
0.035 |
0.035 |
November |
13-11-2002
|
0.065 |
0.073 |
25-11-2002
|
0.049 |
0.062 |
December |
13-12-2002
|
0.075 |
0.072 |
25-12-2002
|
0.061 |
0.070 |
Annual Average
|
0.057 |
0.063 |
|
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
|