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
|