Summary
Paired tap-water and plasma study. Only water results are transcribed; unfiltered, activated-carbon filtered and reverse-osmosis strata stay separate.
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 | <LOQ | ng/L | unfiltered tap water; median [min, max] among quantifiable results or printed <LOQ | PDF p3, Table 2, unfiltered tap-water column | LOQ 10 ng/L, PDF p3 Table 2 |
| PFNA | <LOQ | ng/L | unfiltered tap water; median [min, max] among quantifiable results or printed <LOQ | PDF p3, Table 2, unfiltered tap-water column | LOQ 5.0 ng/L, PDF p3 Table 2 |
| PFDA | <LOQ | ng/L | unfiltered tap water; median [min, max] among quantifiable results or printed <LOQ | PDF p3, Table 2, unfiltered tap-water column | LOQ 5.0 ng/L, PDF p3 Table 2 |
| PFHxS | <LOQ | ng/L | unfiltered tap water; median [min, max] among quantifiable results or printed <LOQ | PDF p3, Table 2, unfiltered tap-water column | LOQ 10 ng/L, PDF p3 Table 2 |
| PFOS | 13.0 [10.0, 28.0] | ng/L | unfiltered tap water; median [min, max] among quantifiable results or printed <LOQ | PDF p3, Table 2, unfiltered tap-water column | LOQ 10 ng/L, PDF p3 Table 2 |
| PFHxA | 12.0 [10.0, 16.0] | ng/L | unfiltered tap water; median [min, max] among quantifiable results or printed <LOQ | PDF p3, Table 2, unfiltered tap-water column | LOQ 10 ng/L, PDF p3 Table 2 |
| PFOA | <LOQ | ng/L | activated-carbon filtered tap water; median [min, max] among quantifiable results or printed <LOQ | PDF p3, Table 2, filtered tap water with AC | LOQ 10 ng/L, PDF p3 Table 2 |
| PFOS | 12.0 [11.0, 21.0] | ng/L | activated-carbon filtered tap water; median [min, max] among quantifiable results or printed <LOQ | PDF p3, Table 2, filtered tap water with AC | LOQ 10 ng/L, PDF p3 Table 2 |
| PFBS | 10.5 [5.9, 15.0] | ng/L | activated-carbon filtered tap water; median [min, max] among quantifiable results or printed <LOQ | PDF p3, Table 2, filtered tap water with AC | LOQ 5.0 ng/L, PDF p3 Table 2 |
1 further transcribed values remain under review and are not shown.
Evidence Fitness
Source classification: primary_measurement. MANIFEST tier: PRIMARY. 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)
SPE followed by LC-MS/MS for water, PDF p2. Water and plasma were analyzed separately; target scope in Methods and Table 2.
Detection limits and censoring: Table 2, PDF p3, prints water LOQs; medians are computed from samples above LOD/LOQ only. Zero in >LOQ count is not a zero concentration.
Limitations
- LIMIT_VALUE_CONFLICT: PFBS unfiltered minimum 4.5 ng/L. Comparison: LOQ 5.0 ng/L and footnote says medians from >LOD/LOQ results. Locator: PDF p3 Table 2. Preserve both values and quarantine summary; no repair.
- PUBLICATION_YEAR: MANIFEST citation year 2023. Comparison: PDF journal citation year 2024; copyright 2023. Locator: PDF pp1 and 3. Use printed journal year in citation metadata; retain both dates in provenance.
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_Cserbik_concentrations-of-per-and-polyfluoroalkyl-substances.pdf. SHA-256: dbd16688355664d13b6d735ae0e9be5d36e7cb873cadfa2d60aa49260b5a7312. 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.