Dioxins in Air - Measurement Results of 2015
Month |
Sampling Date
|
Concentrations |
Central/Western
|
Tsuen Wan
|
January |
26-01-2015 |
0.098 |
-- |
08-01-2015 |
-- |
0.055 |
February |
07-02-2015 |
0.114 |
-- |
13-02-2015 |
-- |
0.051 |
March |
15-03-2015 |
0.021 |
-- |
27-03-2015 |
-- |
0.080 |
April |
26-04-2015 |
0.017 |
-- |
02-04-2015 |
-- |
0.016 |
May |
08-05-2015 |
0.008 |
-- |
14-05-2015 |
-- |
0.009 |
June |
19-06-2015 |
0.008 |
-- |
25-06-2015 |
-- |
0.009 |
July |
25-07-2015 |
0.008 |
-- |
07-07-2015 |
-- |
0.044 |
August |
06-08-2015 |
0.009 |
-- |
12-08-2015 |
-- |
0.010 |
September |
17-09-2015 |
0.015 |
-- |
23-09-2015 |
-- |
0.009 |
October |
23-10-2015 |
0.026 |
-- |
05-10-2015 |
-- |
0.009 |
November |
04-11-2015 |
0.058 |
-- |
16-11-2015 |
-- |
0.017 |
December |
16-12-2015 |
0.050 |
-- |
22-12-2015 |
-- |
0.033 |
Annual Average
|
0.036
|
0.029 |
|
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
|