Dioxins in Air - Measurement Results of 2017
Month |
Sampling Date
|
Concentrations |
Central/Western
|
Tsuen Wan
|
January |
21-01-2017 |
0.103 |
-- |
09-01-2017 |
-- |
0.054 |
February |
08-02-2017 |
0.041 |
-- |
20-02-2017 |
-- |
0.032 |
March |
04-03-2017 |
0.055 |
-- |
22-03-2017 |
-- |
0.026 |
April |
21-04-2017 |
0.016 |
-- |
09-04-2017 |
-- |
0.009 |
May |
09-05-2017 |
0.017 |
-- |
21-05-2017 |
-- |
0.009 |
June |
08-06-2017 |
0.008 |
-- |
20-06-2017 |
-- |
0.009 |
July |
20-07-2017 |
0.012 |
-- |
08-07-2017 |
-- |
0.009 |
August |
07-08-2017 |
0.009 |
-- |
25-08-2017 |
-- |
0.009 |
September |
06-09-2017 |
0.009 |
-- |
24-09-2017 |
-- |
0.009 |
October |
24-10-2017 |
0.038 |
-- |
12-10-2017 |
-- |
0.030 |
November |
05-11-2017 |
0.047 |
-- |
23-11-2017 |
-- |
0.044 |
December |
05-12-2017 |
0.063 |
-- |
17-12-2017 |
-- |
0.066 |
Annual Average
|
0.035
|
0.025 |
|
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
|