Table 1. Concentrations (ng g–1 lw) of Measured Brominated Flame Retardants in Maternal Serum and Milk Samples Collected from Mothers in Sherbrooke, Québec, Canadaa.
| %lipid | TBB | TBPH | BB-153 | BDE-153 | DBDPE | OBIND | BB-209 | BTBPE | |
|---|---|---|---|---|---|---|---|---|---|
| serum (n = 102) | |||||||||
| %DF | 56.9 | 16.7 | 71.6 | 58.8 | 5.9 | 9.8 | 2.0 | 3.9 | |
| min | 0.35 | ND | ND | ND | ND | ND | ND | ND | ND |
| 10%ile | 0.53 | ND | ND | ND | ND | ND | ND | ND | ND |
| 25%ile | 0.61 | ND | ND | ND | ND | ND | ND | ND | ND |
| 50%ile | 0.67 | 1.6 | ND | 0.48 | 1.5 | ND | ND | ND | ND |
| 75%ile | 0.76 | 5.5 | ND | 0.91 | 6.1 | ND | ND | ND | ND |
| 90%ile | 0.85 | 12 | 11 | 3.2 | 48 | ND | ND | ND | ND |
| 95%ile | 0.93 | 22 | 33 | 6.8 | 108 | 3.4 | 2.9 | ND | ND |
| max | 1.0 | 68 | 164 | 166 | 308 | 123 | 90 | 72 | 16 |
| mean | 0.69 | 5.4 | 2.8 | 18 | |||||
| s.d. | 0.13 | 10 | 16 | 47 | |||||
| geomean | 0.67 | 1.3 | 0.20 | 1.9 | |||||
| LOD | 0.38 | 7.3 | 0.01 | 0.52 | 3.5 | 1.5 | 0.67b | 3.2b | |
| milk (n = 105) | |||||||||
| %DF | 78.1 | 32.4 | 75.2 | 80.0 | 8.6 | 1.0 | 0 | 0 | |
| min | 0.54 | ND | ND | ND | ND | ND | ND | ND | ND |
| 10%ile | 0.85 | ND | ND | ND | ND | ND | ND | ND | ND |
| 25%ile | 1.2 | 0.07 | ND | 0.08 | 1.5 | ND | ND | ND | ND |
| 50%ile | 1.8 | 0.41 | ND | 0.31 | 4.4 | ND | ND | ND | ND |
| 75%ile | 2.6 | 1.0 | 0.80 | 0.51 | 11 | ND | ND | ND | ND |
| 90%ile | 3.3 | 2.7 | 3.0 | 0.99 | 39 | ND | ND | ND | ND |
| 95%ile | 3.7 | 5.3 | 4.0 | 1.5 | 93 | 3.3 | ND | ND | ND |
| max | 9.2 | 24 | 6.6 | 19 | 180 | 25 | 1.3 | ND | ND |
| mean | 2.0 | 1.3 | 0.62 | 16 | |||||
| s.d. | 1.1 | 3.2 | 1.9 | 31 | |||||
| geomean | 1.8 | 0.29 | 0.14 | 4.1 | |||||
| LOD | 0.03 | 0.15 | 0.01 | 0.66 | 1.7 | 0.20b | 0.49b | 0.86b | |
a
ND = not detected; LOD = limit of detection, defined as signal/noise >3 in real samples.
b
LOD derived from lowest standard concentration that produced signal/noise >3.