Table 2.
Detection frequency (DF, %), minimum (min), median, mean (with their standard errors, SE), and maximum (max) concentrations of PFAS in water (ng/L) and serum (ng/mL) samples and the contribution of each individual PFAS compound to ΣPFAS concentrations.
| Residential water (ng/L, n = 25) | Source Zone Water (ng/L, n = 2) | Serum (ng/mL, n = 40) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DOT | Airport | |||||||||||||
| compound (carbon chain) | DF | min. | median | mean +/− SE | max. | contr. | concentration | concentration | DF | min. | median | mean ± SE | max. | contr. |
| Short-Chain | Short-Chain | |||||||||||||
| PFPrS (C3) | 48 | <MDL | <MDL | 0.223 ± 0.0667 | 1.19 | 1 | 22.5 | 2.08 | 0 | <MDL | <MDL | <MDL | <MDL | 0 |
| PFBA (C4) | 0 | <MDL | <MDL | <MDL | <MDL | 0 | 597 | 7.27 | 0 | <MDL | <MDL | <MDL | <MDL | 0 |
| PFBS (C4) | 80 | <MDL | 0.394 | 0.767 ± 0.174 | 3.16 | 3 | 91.8 | 4.2 | 90 | <MDL | 0.167 | 0.0557 ± 0.0074 | 0.192 | 1 |
| PFPeA (C5) | 20 | <MDL | <MDL | 0.674 ± 0.339 | 6.50 | 2 | 2,940 | 14.3 | 83 | <MDL | 0.0353 | 0.317 ± 0.0447 | 1.40 | 3 |
| PFPeS (C5) | 52 | <MDL | 0.059 | 0.743 ± 0.234 | 4.18 | 3 | 117 | 3.05 | 88 | <MDL | 0.238 | 0.0555 ± 0.0138 | 0.502 | 1 |
| PFHxA (C6) | 20 | <MDL | <MDL | 9.84 ± 1.09 | 28.4 | 12 | 3,240 | 28.9 | 15 | <MDL | <MDL | 0.00984 ± 0.00109 | 0.0325 | 0 |
| PFHxS (C6) | 40 | <MDL | <MDL | 4.38 ± 1.52 | 28.6 | 16 | 671 | 17.4 | 95 | <MDL | 1.17 | 2.46 ± 0.433 | 13.1 | 26 |
| 4:2 FTS (C6) | 0 | <MDL | <MDL | <MDL | <MDL | 0 | 4.63 | <MDL | 5 | <MDL | <MDL | <MDL | 0.0393 | 3 |
| PFHpA (C7) | 24 | <MDL | <MDL | 0.949 ± 0.293 | 6.38 | 4 | 332 | <MDL | 93 | <MDL | 0.0267 | 0.0472 ± 0.00907 | 0.258 | 0 |
| PFHpS (C7) | 40 | <MDL | <MDL | 0.294 ± 0.102 | 1.76 | 1 | 98 | 1.56 | 100 | 0.018 | 0.150 | 0.256 ± 0.0366 | 1.07 | 3 |
| PFOS (C8) | 40 | <MDL | <MDL | 14.9 ± 5.87 | 120 | 55 | 6,300 | 146 | 100 | 0.278 | 3.38 | 3.78 ± 0.348 | 9.04 | 40 |
| PFOA (C8) | 48 | <MDL | <MDL | 0.636 ± 0.203 | 3.17 | 2 | 89.4 | <MDL | 95 | <MDL | 0.975 | 1.11 ± 0.107 | 3.69 | 12 |
| PFECHS (C8) | 20 | <MDL | <MDL | 0.0326 ± 0.0154 | 0.358 | 0 | 0.372 | <MDL | 43 | <MDL | <MDL | 0.0105 ± 0.00159 | 0.0452 | 0 |
| FOSA (C8) | 0 | <MDL | <MDL | <MDL | <MDL | 0 | <MDL | <MDL | 58 | <MDL | 0.0163 | 0.0244 ± 0.00479 | 0.159 | 0 |
| PFNA (C9) | 8 | <MDL | <MDL | 0.0189 ± 0.00964 | 0.188 | 0 | 21.1 | <MDL | 100 | 0.026 | 0.521 | 0.553 ± 0.0446 | 1.32 | 6 |
| PFDA (C10) | 0 | <MDL | <MDL | <MDL | <MDL | 0 | <MDL | <MDL | 100 | 0.017 | 0.240 | 0.258 ± 0.0201 | 0.548 | 3 |
| PFUdA (C11) | 0 | <MDL | <MDL | <MDL | <MDL | 0 | <MDL | <MDL | 90 | <MDL | 0.143 | 0.185 ± 0.0189 | 0.472 | 2 |
| PFDoA (C12) | 0 | <MDL | <MDL | <MDL | <MDL | 0 | <MDL | <MDL | 58 | <MDL | 0.034 | 0.0362 ± 0.00346 | 0.0824 | 0 |
| PFTrDA (C13) | 0 | <MDL | <MDL | <MDL | <MDL | 0 | <MDL | <MDL | 28 | <MDL | <MDL | 0.0290 ± 0.00260 | 0.0876 | 0 |
| ΣPFAS | <MDL | <MDL | 2.16 ± 1.08 | 120 | 100 | 14,600 | 228 | 0.017 | 0.0823 | 0.520 ± 0.204 | 13.1 | 100 | ||
MDL: method detection limit.