 |
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
|
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