Dioxins in Air - Measurement Results of 2009

Dioxins in Air - Measurement Results of 2009

Month
Sampling Date
Concentrations
Central/Western
Tsuen Wan
January  05-01-2009 0.080 --
17-01-2009 -- 0.057
February 10-02-2009 0.054 --
22-02-2009 -- 0.032
March 06-03-2009 0.059 --
24-03-2009 -- 0.026
April 05-04-2009 0.062 --
23-04-2009 -- 0.037
May 11-05-2009 0.012 --
23-05-2009 -- 0.015
June 10-06-2009 0.0087 --
28-06-2009 -- 0.0093
July 10-07-2009 0.035 --
28-07-2009 -- 0.0086
August 09-08-2009 0.110 --
27-08-2009 -- 0.0097
September 08-09-2009 0.029 --
26-09-2009 -- 0.052
October 08-10-2009 0.037 --
20-10-2009 -- 0.059
November 07-11-2009 0.023 --
19-11-2009 -- 0.136
December 01-12-2009 0.083 --
19-12-2009 -- 0.2
Annual Average

0.049

0.053


NOTE :

  1. Figures are 24-hour average concentrations on the day of sampling in pg I-TEQ /m3.
  2. 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)
  3. 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
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Last revision date:10:07 24-08-2019