Dioxins in Air - Measurement Results of 2010
Month |
Sampling Date
|
Concentrations |
Central/Western
|
Tsuen Wan
|
January |
06-01-2010 |
0.080 |
-- |
18-01-2010 |
-- |
0.073 |
February |
05-02-2010 |
0.025 |
-- |
23-02-2010 |
-- |
0.024 |
March |
07-03-2010 |
0.081 |
-- |
25-03-2010 |
-- |
0.1 |
April |
12-04-2010 |
0.012 |
-- |
24-04-2010 |
-- |
0.056 |
May |
24-05-2010 |
0.029 |
-- |
12-05-2010 |
-- |
0.023 |
June |
11-06-2010 |
0.040 |
-- |
29-06-2010 |
-- |
0.009 |
July |
11-07-2010 |
0.008 |
-- |
29-07-2010 |
-- |
0.009 |
August |
10-08-2010 |
0.009 |
-- |
28-08-2010 |
-- |
0.092 |
September |
09-09-2010 |
0.031 |
-- |
27-09-2010 |
-- |
0.017 |
October |
09-10-2010 |
0.039 |
-- |
21-10-2010 |
-- |
0.119 |
November |
08-11-2010 |
0.066 |
-- |
20-11-2010 |
-- |
0.058
|
December |
02-12-2010 |
0.119 |
-- |
20-12-2010 |
-- |
0.261 |
Annual Average
|
0.045
|
0.070 |
|
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
|