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.
No values from this source are published. It is filed as method or context evidence.
1 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)
SPE LC-MS/MS based on EPA Method 537.1, PDF pp. 5-7. Single extraction and instrumental analysis per retail sample.
Target labels as printed: PFHxA; NMeFOSAA; PFHpA; PFOA; PFUnA; PFDoA; PFNA; PFDA; PFTA; PFTrDA (Tables 3-5).
Detection and quantification limits: Table 4, PDF p. 10: PFOA LOD 0.05 ng/L, LOQ 0.16 ng/L. Method-level limits. Table 5 control results are Not Detected; these controls are not bottled-product occurrence rows.
Limitations
Appendix A is cited but absent from the deposited PDF. Elevated result not confirmed by repeat extraction or confirmatory injection (PDF pp. 11-12). Variable recoveries limit quantification. Title page publication precedes acceptance as printed; dates not repaired. MANIFEST includes PFHxS/PFOS, which are absent from the stated target set.
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.