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
|