 |
Dioxins
in Air - Measurement Results of 2008
| Month |
Sampling
Date
|
Concentrations |
|
Central/Western
|
Tsuen
Wan
|
| January |
05-01-2008 |
0.061 |
-- |
| 17-01-2008 |
-- |
0.184 |
| February |
04-02-2008 |
0.085 |
-- |
| 16-02-2008 |
-- |
0.101 |
| March |
05-03-2008 |
0.062 |
-- |
| 17-03-2008 |
-- |
0.034 |
| April |
10-04-2008 |
0.016 |
-- |
| 22-04-2008 |
-- |
0.067 |
| May |
04-05-2008 |
0.016 |
-- |
| 22-05-2008 |
-- |
0.056 |
| June |
12-06-2008 |
0.009 |
-- |
| 21-06-2008 |
-- |
0.022 |
| July |
09-07-2008 |
0.010 |
-- |
| 21-07-2008 |
-- |
0.008 |
| August |
02-08-2008 |
0.009 |
|
| 20-08-2008 |
-- |
0.032 |
| September |
07-09-2008 |
0.025 |
-- |
| 25-09-2008 |
-- |
0.009 |
| October |
07-10-2008 |
0.059 |
-- |
| 19-10-2008 |
-- |
0.038 |
| November |
06-11-2008 |
0.021 |
-- |
| 18-11-2008 |
-- |
0.108 |
| December |
06-12-2008 |
0.120 |
-- |
| 23-12-2008 |
-- |
0.085 |
|
Annual
Average
|
0.041
|
0.062 |
|
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
|
|
|
|