Summary
Private-well samples collected from household plumbing taps. Extreme results and low reporting limits are not generalized to the whole state.
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 |
|---|---|---|---|---|---|
| PFOA | 11,300 | ng/L | one private-well household tap sample; exceptional result, not a population statistic | PDF p5, section 3.1, paragraph beginning While the study sampling locations | PFOA MDL 0.102 ng/L and PFOS MDL 0.135 ng/L, PDF p3 Table 1 (Method Detection Limits). |
Evidence Fitness
Source classification: primary_measurement. MANIFEST tier: SUPPORTIVE. This is a selected, bounded transcription, not an exhaustive extraction of every result in the paper. Each selected number has its own PDF page or table locator. Values for different matrices, isomers, statistics and aggregate assays are not interchangeable.
Methods (brief)
WAX SPE with isotope-dilution HPLC-MS/MS, PDF p3; targeted analytes and method reporting limits in Table 1.
Detection limits and censoring: PFOA MDL 0.102 ng/L and PFOS MDL 0.135 ng/L, PDF p3 Table 1 (Method Detection Limits).
Limitations
Provenance notes
Citation metadata verified against PDF p1, title, author byline, journal citation or masthead, and DOI.. Article DOI appears in the supplied PDF and matches the MANIFEST case-insensitively. Original file: 2023_Silver_prevalence-and-source-tracing-of-pfas.pdf. SHA-256: af8504975416d21f04a8e56569ffafcd4979c99c588baa3fc3aa1643c63846c0. Original MANIFEST remains in the copied packet; discrepancies are listed without modifying it. Commercial analyte synonyms, instrument brands and manufacturer names are generalized in authored index prose.