Table 3
Mean body burden of PCDD/F congeners in zones A (near industry) and C (away from industry) in ng/kg lipid base
| Full sample, mean (SD) | Zone A | Zone C | Difference in means: A − C (95% CI) | |
|---|---|---|---|---|
| Values of 1234678 Hepta-F below detection limits for >50% samples and for >90% samples of 2378 Tetra-F, 12378 Penta-F, 123789 Hexa-F, 1234789 Hepta-F, and OCDF. | ||||
| 2378 Tetra-CDD | 4.0 (1.5) | 4.0 | 4.1 | −0.2 (−1.2 to 0.8) |
| 12378 Penta-CDD | 10.8 (3.1) | 10.7 | 10.8 | −0.2 (−2.2 to 1.8) |
| 123478 Hexa-CDD | 9.2 (4.7) | 8.4 | 10.1 | −1.7 (−4.7 to 1.2) |
| 123678 Hexa-CDD | 44.2 (16.2) | 42.7 | 45.7 | −3.0 (−10.6 to 7.8) |
| 123789 Hexa-CDD | 6.0 (2.1) | 5.6 | 6.4 | −0.8 (−2.2 to 0.5) |
| 1234678 Hepta-CDD | 30.6 (26.8) | 21.5 | 39.8 | −18.2 (−31.5 to 0.2) |
| Octa CDD | 571 (365) | 457 | 685 | 228 (12 to 467) |
| 23478 Penta CDF | 14.1 (5.3) | 13.7 | 14.5 | −0.8 (−4.3 to 2.6) |
| 234678 Hexa CDF | 4.2 (4.7) | 3.9 | 4.5 | −0.6 (−2.5 to 1.3) |
| 123478 Hexa CDF | 7.6 (2.8) | 7.3 | 7.9 | −0.6 (−2.4 to 1.2) |
| 123678 Hexa CDF | 5.4 (2.0) | 5.2 | 5.5 | −0.4 (−1.7 to 1.0) |
| Sample size | 40 | 20 | 20 | |
