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Table B39a. Concentrations (pg/g [pptr]
wet weight) of 2,3,7,8-substituted PCDD congeners found in Cambridge
Isotope Laboratory fish tissue EDF-2526 standard reference material |
| Composite # |
Congener
|
2,3,7,8-
TCDD |
1,2,3,7,8-
PeCDD |
1,2,3,4,7,8-
HxCDD |
1,2,3,6,7,-
HxCDD8 |
1,2,3,7,8,9-
HxCDD |
1,2,3,4,6,7,8-
HpCDD |
OCDD |
| Replicate 1 |
20.8 |
44.7 |
55.8 |
49.0 |
51.9 |
73.7 |
186 |
| Replicate 2 |
21.0 |
45.1 |
53.0 |
50.3 |
48.3 |
71.8 |
183 |
| Replicate 3 |
20.0 |
43.5 |
54.6 |
50.6 |
43.0 |
73.1 |
189 |
| Mean (n = 3) |
20.6 |
44.4 |
54.5 |
50.0 |
47.7 |
72.9 |
186 |
| Std. dev. |
0.514 |
0.824 |
1.45 |
0.811 |
4.46 |
0.944 |
2.77 |
| Consensus value |
19 |
40 |
60 |
56 |
60 |
76 |
192 |
| Recovery (%) |
109 |
111 |
91 |
89 |
80 |
96 |
97 |
| Difference (%) |
9 |
11 |
9 |
11 |
20 |
4 |
3 |
Table B39b. Concentrations
(pg/g [pptr] wet weight) of 2,3,7,8-substituted PCDF congeners found
in Cambridge Isotope Laboratory fish tissue EDF-2526 standard reference
material |
| Composite # |
Congener
|
2,3,7,8-
TCDF |
1,2,3,7,8-
PeCDF |
2,3,4,7,8-
PeCDF |
1,2,3,4,7,8-
HxCDF |
1,2,3,6,7,8-
HxCDF |
1,2,3,7,8,9-
HxCDF |
2,3,4,6,7,8-
HxCDF |
1,2,3,4,6,7,8-
HpCDF |
1,2,3,4,7,8,9-
HpCDF |
OCDF |
| Replicate 1 |
19.4 |
37.2 |
37.7 |
82.4 |
63.5 |
60.1 |
57.3 |
78.7 |
84.6 |
183 |
| Replicate 2 |
20.5 |
37.4 |
37.9 |
82.1 |
59.6 |
57.9 |
56.6 |
72.0 |
76.5 |
176 |
| Replicate 3 |
20.0 |
38.9 |
37.3 |
85.1 |
63.2 |
62.3 |
60.6 |
76.0 |
82.0 |
206 |
| Mean (n = 3) |
20.0 |
37.8 |
37.6 |
83.2 |
62.1 |
60.1 |
58.2 |
75.6 |
81.0 |
188 |
| Std. dev. |
0.583 |
0.930 |
0.287 |
1.64 |
2.17 |
2.21 |
2.12 |
3.38 |
4.12 |
15.3 |
| Consensus value |
17 |
40 |
38 |
80 |
63 |
58 |
60 |
83 |
73 |
190 |
| Recovery (%) |
118 |
95 |
99 |
104 |
99 |
104 |
97 |
91 |
111 |
99 |
| Difference (%) |
18 |
5 |
1 |
4 |
1 |
4 |
3 |
9 |
11 |
1 |
|