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 |
|---|---|---|---|---|---|
| PFOA | 217 | ng/dm² | E-2 microwave popcorn paper | PDF p.11, Table 3; prose PDF pp.13-14 | PDF p.11: LODs 0.07-2.05 ng/dm² and LOQs 0.17-12.5 ng/dm² excluding FTOHs; FTOH LODs 6.08-35.9 ng/dm² and LOQs 18.3-124 ng/dm². N.D. means non-detectable (Table 3 footnote). |
| PFOA | 13.4 | ng/dm² | E-3 microwave popcorn paper | PDF p.11, Table 3; prose PDF pp.13-14 | PDF p.11: LODs 0.07-2.05 ng/dm² and LOQs 0.17-12.5 ng/dm² excluding FTOHs; FTOH LODs 6.08-35.9 ng/dm² and LOQs 18.3-124 ng/dm². N.D. means non-detectable (Table 3 footnote). |
| PFOA | 48.6 | ng/dm² | F-1 oil-proof paper bag | PDF p.11, Table 3; prose PDF pp.13-14 | PDF p.11: LODs 0.07-2.05 ng/dm² and LOQs 0.17-12.5 ng/dm² excluding FTOHs; FTOH LODs 6.08-35.9 ng/dm² and LOQs 18.3-124 ng/dm². N.D. means non-detectable (Table 3 footnote). |
| 6:2 FTOH | 57.0 | ng/dm² | E-1 microwave popcorn paper | PDF p.11, Table 3; prose PDF pp.13-14 | PDF p.11: LODs 0.07-2.05 ng/dm² and LOQs 0.17-12.5 ng/dm² excluding FTOHs; FTOH LODs 6.08-35.9 ng/dm² and LOQs 18.3-124 ng/dm². N.D. means non-detectable (Table 3 footnote). |
| 6:2 FTOH | 121 | ng/dm² | E-4 microwave popcorn paper | PDF p.11, Table 3; prose PDF pp.13-14 | PDF p.11: LODs 0.07-2.05 ng/dm² and LOQs 0.17-12.5 ng/dm² excluding FTOHs; FTOH LODs 6.08-35.9 ng/dm² and LOQs 18.3-124 ng/dm². N.D. means non-detectable (Table 3 footnote). |
| PFOS | N.D. | ng/dm² | All sampled packaging; Table 3 footnote says undetectable | PDF p.11, Table 3 footnotes | PDF p.11: LODs 0.07-2.05 ng/dm² and LOQs 0.17-12.5 ng/dm² excluding FTOHs; FTOH LODs 6.08-35.9 ng/dm² and LOQs 18.3-124 ng/dm². N.D. means non-detectable (Table 3 footnote). |
Evidence Fitness
primary_measurement. Table 3 provides both area and mass units; selected rows retain the area basis. Volatile-analyte recovery issues and a PAP prose/table conflict are held.
Methods (brief)
Methanol ultrasonic extraction followed by UPLC-MS/MS. Twenty analytes and isotope standards listed in Table 1, PDF p.4; sample results in Table 3, PDF p.11.
Analytes or measurement scopes: PFBA, PFPeA, PFHxA, PFOA, PFDA, PFUnDA, PFDoDA, PFHxDA, PFBS, PFHxS, PFOS, PFOSA, N-MeFOSA, 4:2 FTOH, 6:2 FTOH, 8:2 FTOH, 6:2 PAP, 8:2 PAP, 6:2 diPAP, 8:2 diPAP. Target identities are not inferred from the manifest acronym scan.
Limitations
PDF p.11: LODs 0.07-2.05 ng/dm² and LOQs 0.17-12.5 ng/dm² excluding FTOHs; FTOH LODs 6.08-35.9 ng/dm² and LOQs 18.3-124 ng/dm². N.D. means non-detectable (Table 3 footnote).
Selected rows are a bounded extraction, not a complete transcription of every table. Supplied main articles are the evidence boundary; unstaged supplements were not retrieved. Aggregate fluorine, targeted PFAS, migration, material content, detection frequency and modeled exposure remain distinct. All findings remain HOLD pending Elon verification.
Provenance notes
Citation: Peng Siao; Su-Hsiang Tseng; Chia-Yang Chen (2022). Determination of perfluoroalkyl substances in food packaging in Taiwan using ultrasonic extraction and ultra-performance liquid chromatography/tandem mass spectrometry. Journal of Food and Drug Analysis. Bibliographic identity checked against the deposited title page. Manifest DOI: https://doi.org/10.38212/2224-6614.3397. Printed DOI: 10.38212/2224-6614.3397.
Local input: siao-2022-determination-of-perfluoroalkyl-substances-in-food.pdf. SHA256: 07a030405e459e3e61466e665a08dde333c50d525c5fff92f7c0c2c622087980. Byte-identical PDF copy: raw/fci-ingest-1/food-packaging-paperboard-cartons/siao-2022-determination-of-perfluoroalkyl-substances-in-food.pdf. Access and license text from the manifest are preserved in the raw intake control, without claiming independent external verification. No external retrieval was performed.
See reports/fci-ingest-1/food-packaging-paperboard-cartons/MISMATCHES.csv for unresolved source conflicts. Public findings are intentionally empty; held_findings and this table are private review evidence.