Table 3. Average (Median) Concentrations (in ng/mL) of Perfluorinated Compounds in 12 Sets of Maternal Serum, Cord Serum, and Milk Samples, with the Ratio and Correlation Coefficient for Maternal v. Cord Serum.
| matrix | perfluorohexane sulfonic acid (PFHxS) | perfluorooctanic acid (PFOA) | perfluorooctane sulfonic acid (PFOS) | perfluoro-nonanoic acid (PFNA) | perfluoro-decanoic acid (PFDA) |
|---|---|---|---|---|---|
| maternal | 12.3 | 4.2 | 19.7 | 0.76 | 0.34 |
| cord | 9.1 | 3.1 | 6.6 | 0.37 | 0.10 |
| milka | (0.1) | ||||
| concentration in cord/maternal serum | |||||
| ratio | 0.74 | 0.72 | 0.34 | 0.50 | 0.29 |
| correlation | 0.05 | 0.91 | 0.82 | 0.84 | 0.91 |
a
Four of eleven samples available had a PFOA concentration below the detection limit, and none of the other analytes were detected.