Dioxins in Air - Measurement Results of 2004
Month |
Sampling Date
|
Concentrations |
Central/Western
|
Tsuen Wan
|
January |
08-01-2004 |
-- |
0.078 |
20-01-2004 |
0.125 |
-- |
February |
13-02-2004 |
0.156 |
-- |
19-02-2004 |
-- |
0.049 |
March |
08-03-2004 |
0.093 |
-- |
26-03-2004 |
-- |
0.082 |
April |
07-04-2004 |
-- |
0.043 |
25-04-2004 |
0.043 |
-- |
May |
13-05-2004 |
0.035 |
-- |
25-05-2004 |
-- |
0.044 |
June |
06-06-2004 |
0.041 |
-- |
24-06-2004 |
-- |
0.036 |
July |
06-07-2004 |
0.036 |
-- |
24-07-2004 |
-- |
0.037 |
August |
05-08-2004 |
-- |
0.036 |
21-08-2004 |
0.041 |
-- |
September |
10-09-2004 |
0.110 |
-- |
22-09-2004 |
-- |
0.061 |
October |
10-10-2004 |
0.048 |
-- |
22-10-2004 |
-- |
0.066 |
November |
9-11-2004 |
0.043 |
-- |
15-11-2004 |
-- |
0.080 |
December |
3-12-2004 |
0.104 |
-- |
21-12-2004 |
-- |
0.051 |
Annual Average
|
0.073 |
0.055 |
|
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
|