Dioxins in Air - Measurement Results of 2012
Month |
Sampling Date
|
Concentrations |
Central/Western
|
Tsuen Wan
|
January |
14-01-2012 |
0.095 |
-- |
02-01-2012 |
-- |
0.060 |
February |
19-02-2012 |
0.048 |
-- |
01-02-2012 |
-- |
0.023 |
March |
02-03-2012 |
0.028 |
-- |
20-03-2012 |
-- |
0.048 |
April |
01-04-2012 |
0.037 |
-- |
19-04-2012 |
-- |
0.042 |
May |
01-05-2012 |
0.008 |
-- |
19-05-2012 |
-- |
0.012 |
June |
06-06-2012 |
0.013 |
-- |
18-06-2012 |
-- |
0.009 |
July |
06-07-2012 |
0.008 |
-- |
18-07-2012 |
-- |
0.008 |
August |
17-08-2012 |
0.01 |
-- |
05-08-2012 |
-- |
0.011 |
September |
16-09-2012 |
0.062 |
-- |
04-09-2012 |
-- |
0.01 |
October |
04-10-2012 |
0.04 |
-- |
16-10-2012 |
-- |
0.026 |
November |
21-11-2012 |
0.055 |
-- |
03-11-2012 |
-- |
0.036 |
December |
21-12-2012 |
0.060 |
-- |
03-12-2012 |
-- |
0.056 |
Annual Average
|
0.039
|
0.028 |
|
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
|