Table 3:
Detection frequencies and descriptive statistics PFASs in children’s serum samples (n=90).
| Biomarkers | Abbreviation | % Detecta | Median ng/mL | Min ng/mL | 95th Percentile ng/mL |
|---|---|---|---|---|---|
| 2-(N-ethyl-perfluorooctane sulfonamido) acetate | EtFOSAA | 1 | -- | -- | -- |
| 2-(N-methyl-perfluorooctane sulfonamido) acetate | MeFOSAA | 42 | -- | -- | 0.80 |
| Perfluorodecanoate | PFDA | 59 | 0.20 | ND | 0.50 |
| perfluorohexane sulfonate | PFHxS | 100 | 0.70 | 0.20 | 2.0 |
| Perfluorononanoate | PFNA | 99 | 0.40 | ND | 1.0 |
| perfluorooctane sulfonamide | FOSA | 0 | -- | -- | -- |
| branched perfluorooctanoates | Sb-PFOA | 49 | -- | -- | 0.44 |
| perfluoromethylheptane sulfonates | Sm-PFOS | 98 | 0.50 | ND | 1.3 |
| n-perfluorooctanoate | n-PFOA | 100 | 1.6 | 0.40 | 3.3 |
| n-perfluorooctane sulfonate | n-PFOS | 99 | 2.0 | ND | 5.0 |
a
Method detection limit = 0.1 ng/mL for all PFASs.