Summary
Targeted and suspect-screened drinking-water PFAS. Abstract and body disagree on selected compound labels and maxima; conflicting results remain quarantined as HOLD.
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.
2 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)
High-resolution MS with full scan and data-dependent tandem scans, PDF p11; standards and numeric limits referenced in unstaged supporting tables.
Detection limits and censoring: Full analyte-specific LOD/LOQ in unstaged Table S2. No limit is inferred from a maximum or detection frequency.
Limitations
- ABSTRACT_BODY_VALUE_CONFLICT: Abstract PFOA maximum 37.72 ng/L. Comparison: Body/Table 1 PFOA maximum 37.22 ng L−1. Locator: PDF p1 abstract versus p4 Table 1. Retain Table 1 string quarantined HOLD; no correction of either source value.
- ABSTRACT_BODY_ANALYTE_CONFLICT: Abstract assigns 48.92 to PFPeA. Comparison: Body assigns 48.92 to PFHxA. Locator: PDF p1 abstract versus p4 Results. Do not emit the disputed analyte/value pairing.
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: 2025_Qian_occurrence-sources-and-prioritization-of-per.pdf. SHA-256: a5a2df540cdff30f3b18314a86ca90f7221c8783e2e5c6e9c4f4ba9270802eb7. 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.