Summary
Key numbers
Source-reported values checked against the cited page of the filed PDF. Values are reported as printed, without conversion. These are selected records, not an exhaustive transcription.
| analyte | value | unit | basis | source location | limits and qualifiers |
|---|---|---|---|---|---|
| PFHxA | 0.32 | ng/L | bottled-water mean based on detections above MDL; ND literal | PDF p. 4 (4398), Table 1 bottled-water mean and footnotes a/f | |
| PFOA | 0.33 | ng/L | bottled-water mean based on detections above MDL; ND literal | PDF p. 4 (4398), Table 1 bottled-water mean and footnotes a/f | |
| PFNA | 0.16 | ng/L | bottled-water mean based on detections above MDL; ND literal | PDF p. 4 (4398), Table 1 bottled-water mean and footnotes a/f | |
| PFDA | 0.07 | ng/L | bottled-water mean based on detections above MDL; ND literal | PDF p. 4 (4398), Table 1 bottled-water mean and footnotes a/f | |
| PFBS | 0.37 | ng/L | bottled-water mean based on detections above MDL; ND literal | PDF p. 4 (4398), Table 1 bottled-water mean and footnotes a/f | |
| PFOS | 0.16 | ng/L | bottled-water mean based on detections above MDL; ND literal | PDF p. 4 (4398), Table 1 bottled-water mean and footnotes a/f | |
| HFPO-DA | 0.22 | ng/L | bottled-water mean based on detections above MDL; ND literal | PDF p. 4 (4398), Table 1 bottled-water mean and footnotes a/f |
3 further transcribed values remain under review and are not shown.
Evidence Fitness
Bounded transcription of selected occurrence statistics, not a complete numeric extraction of the paper. Other matrices, risk calculations, regulatory limits and literature comparisons are excluded.
Methods (brief)
Weak-anion-exchange SPE and LC-MS/MS, negative ESI MRM, PDF pp. 2-3. Validation refers to EPA methods; storage deviates from EPA 537.1 guidance as acknowledged in section 2.3. Acidic-form concentrations.
Target labels as printed: PFPeA; PFHxA; PFHpA; PFOA; PFNA; PFDA; PFUnA; PFDoA; PFTriA; PFTeDA; PFBS; PFHxS; PFOS; HFPO-DA (Tables 1 and section 2.2).
Detection and quantification limits: MDLs 0.06-0.11 ng/L, PDF p. 3, section 2.6; analyte-specific Table S8 absent. Table 1 ND retained, never zero. Quantification limits not supplied in main text.
Limitations
Supplementary information absent; individual MDLs cannot be assigned. Table 1 reports minimum PFNA and summed detections 0.05 ng/L despite main-text MDL range starting at 0.06 ng/L; log retained. Abstract range agrees with the summed range, not individual-analyte means. PFBA is explicitly excluded in section 2.1 despite MANIFEST including it.
Provenance notes
DOI and citation metadata checked against the deposited PDF title page; no online resolution attempted. MANIFEST identity matched. PDF copied without modification; raw_path and sha256 retain local provenance. All printed values and censoring retained without conversion or conflict repair. See reports/bottled-drinking-water/MISMATCHES.csv.