PFAS Meeting Book MYM 2023

Quantitation of branched PFOS (br-PFOS)

A2

A3

br-PFOS 1)

Quantification using …

L-PFOS

+(+)

+(+)

• underestimation when applying transition m/z 499 → 99 • overestimation when applying transition m/z 499 → 80

• isomer pattern in food samples can vary

Accuracy of quantification

1) containing L-PFOS (78.8%) + branched isomers (21.1%)  analytical standard

AOAC Midyear Meeting - Overview of EURL PFAS Guidance Document

16.03.2023

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