Dioxins in Air - Measurement Results of 1997

Dioxins in Air - Measurement Results of 1997

Month
Sampling Date
Concentrations
Central/Western
Tsuen Wan
July  6-7-1997 -- 0.147
24-7-1997 0.063 --
28-7-1997 -- 0.049
August  20-8-1997 0.246 --
26-8-1997 0.034 --
September  4-9-1997 0.226 0.219
10-9-1997 -- 0.138
22-9-1997 0.068 0.076
24-9-1997 0.041 0.052
26-9-1997 0.125 --
October 10-10-1997 0.056 --
16-10-1997 0.165 0.219
19-10-1997 -- 0.163
30-10-1997 -- 0.356
November  4-11-1997 0.250 --
5-11-1997 -- 0.133
18-11-1997 0.096 0.103
December  9-12-1997 0.131 0.193
Annual Average
0.125 0.154

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:12:07 18-06-2019