 |
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
|
|
|
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