Table S1. Analytes, parent and daughter mass ions, and quantification references. Typical Retention Parent Daughter Quantified Target Analyte Time (min.) Ion Mass Ion Mass 369 Perfluorooctanoate (PFOA) 7.0 413 13C2-PFOA (169)1 Perfluorononanoate (PFNA) 7.4 463 419 13C5-PFNA Perfluorodecanoate (PFDA) 7.9 513 469 13C2-PFDA 80 Perfluorohexanesulfonate (PFHxS) 7.2 399 18O2-PFHxS (99/119)1 80 Perfluorooctane sulfonate (PFOS) 8.2 499 13C4-PFOS (99)1 Surrogate Standard 13C2-Perfluorooctanoic acid (13C2-PFOA) 7.0 415 370 13C4-PFOA 13C5-Heptadecafluorononanoic acid (13C5-PFNA) 7.4 468 423 13C2-Perfluorodecanoic acid (13C2-PFDA) 7.9 515 470 84 18O2–Perfluorohexanesulfonate (18O2-PFHxS) 7.2 403 (103)1 80 13C4–Perfluorooctanesulfonate (13C4-PFOS) 8.2 503 (99)1 Recovery Standard 13C2-2H-Perfluoro-2-decenoic acid 7.3 459 394 External 13C4-Perfluorooctanoic acid (13C4-PFOA) 6.9 417 372 External 1 Alternate transition within brackets.
Table S1. Analytes, parent and daughter mass ions, and quantification references. Target Analyte Typical Retention Time (min.) Parent Ion Mass Daughter Ion Mass Quantified Perfluorooctanoate (PFOA) 7.0 413 369 (169)1 13C2-PFOA Perfluorononanoate (PFNA) 7.4 463 419 13C5-PFNA Perfluorodecanoate (PFDA) 7.9 513 469 13C2-PFDA Perfluorohexanesulfonate (PFHxS) 7.2 399 80 (99/119)1 18O2-PFHxS Perfluorooctane sulfonate (PFOS) 8.2 499 80 (99)1 13C4-PFOS Surrogate Standard 13C2-Perfluorooctanoic acid (13C2-PFOA) 7.0 415 370 13C4-PFOA 13C5-Heptadecafluorononanoic acid (13C5-PFNA) 7.4 468 423 13C2-Perfluorodecanoic acid (13C2-PFDA) 7.9 515 470 18O2–Perfluorohexanesulfonate (18O2-PFHxS) 7.2 403 84 (103)1 13C4–Perfluorooctanesulfonate (13C4-PFOS) 8.2 503 80 (99)1 Recovery Standard 13C2-2H-Perfluoro-2-decenoic acid 7.3 459 394 External 13C4-Perfluorooctanoic acid (13C4-PFOA) 6.9 417 372 External 1 Alternate transition within brackets.
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