Table 1.
Distributions of PCDD/F concentrations in 100 house dust samples from the NCI-SEER NHL study.
| Congener | TEF | Median MQL | % >MQL | Median (pg/g) | Inter-Quartile Range (pg/g) |
|---|---|---|---|---|---|
| PCDD | |||||
| 2,3,7,8-TCDD | 1 | 0.4 | 66 | 0.63 | (0.20, 1.1) |
| 1,2,3,7,8-PeCDD | 1 | 1 | 83 | 2.0 | (1.2, 3.9) |
| 1,2,3,4,7,8-HxCDD | 0.1 | 1 | 94 | 3.5 | (2.2, 6.7) |
| 1,2,3,6,7,8-HxCDD | 0.1 | 1 | 100 | 24.7 | (12, 46) |
| 1,2,3,7,8,9-HxCDD | 0.1 | 1 | 100 | 15.5 | (7.9, 26) |
| 1,2,3,4,6,7,8-HpCDD | 0.01 | 1 | 100 | 768 | (410, 1470) |
| OCDD | 0.0003 | 2 | 100 | 7540 | (4500, 14000) |
| PCDF | |||||
| 2,3,7,8-TCDF | 0.1 | 0.4 | 97 | 2.4 | (1.4, 3.9) |
| 1,2,3,7,8-PeCDF | 0.03 | 1 | 87 | 1.9 | (1.1, 3.2) |
| 2,3,4,7,8-PeCDF | 0.3 | 1 | 92 | 3 | (1.7, 5.4) |
| 1,2,3,4,7,8-HxCDF | 0.1 | 1 | 100 | 7.6 | (4.8, 14) |
| 1,2,3,6,7,8-HxCDF | 0.1 | 1 | 100 | 5.3 | (2.9, 9.8) |
| 1,2,3,7,8,9-HxCDFa | 0.1 | 1 | 26 | 0.51 | (0.50, 0.51) |
| 2,3,4,6,7,8-HxCDF | 0.1 | 1 | 96 | 5 | (2.5, 9.8) |
| 1,2,3,4,6,7,8-HpCDF | 0.01 | 1 | 100 | 110 | (62, 230) |
| 1,2,3,4,7,8,9-HpCDF | 0.01 | 1 | 76 | 5.3 | (1.0, 10) |
| OCDF | 0.003 | 2 | 100 | 291 | (160, 480) |
| TEQb | 24 | (12, 40) | |||
MQL, method quantitation limit; TEF, Toxic Equivalency Factor; TEQ, toxic equivalence; TCDD, tetrachlorodibenzodioxin; PCDD, pentachlorodibenzodioxin; HxCDD, hexachlorodibenzodioxin, HpCDD, heptachlorodibenzodioxin; OCDD, octachlorodibenzodioxin; TCDF, tetrachlorodibenzofuran; PeCDF, pentachlorodibenzofuran; HxCDF, hexachlorodibenzofuran, HpCDF, heptachlorodibenzofuran; OCDF, octachlorodibenzofuran
a
Excluded from further analyses due to infrequent detection.
b
TEQ calculated using the 2005 World Health Organization toxic equivalency factors.