 |
Dioxins
in Air - Measurement Results of 2006
| Month |
Sampling
Date
|
Concentrations |
|
Central/Western
|
Tsuen
Wan
|
| January |
09-01-2006 |
0.088 |
-- |
| 21-01-2006 |
-- |
0.092 |
| February |
02-02-2006 |
0.054 |
-- |
| March |
04-03-2006 |
-- |
0.086 |
| 22-03-2006 |
0.135 |
-- |
| April |
09-04-2006 |
-- |
0.042 |
| 27-04-2006 |
0.035 |
-- |
| May |
09-05-2006 |
0.035 |
-- |
| 27-05-2006 |
-- |
0.043 |
| June |
08-06-2006 |
-- |
0.036 |
| 20-06-2006 |
0.036 |
-- |
| July |
08-07-2006 |
-- |
0.036 |
| 26-07-2006 |
0.050 |
-- |
| August |
07-08-2006 |
0.036 |
-- |
| 25-08-2006 |
-- |
0.036 |
| September |
06-09-2006 |
-- |
0.036 |
| 18-09-2006 |
0.070 |
-- |
| October |
12-10-2006 |
-- |
0.055 |
| 24-10-2006 |
0.051 |
-- |
| November |
05-11-2006 |
0.045 |
-- |
| 23-11-2006 |
-- |
0.169 |
| December |
05-12-2006 |
-- |
0.097 |
| 17-12-2006 |
0.082 |
-- |
|
Annual
Average
|
0.060 |
0.066 |
|
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
|
|
|
|