BS EN ISO 23702-1:2023 PDF

Scope: This document specifies a test method for detection and quantification of extractable non-volatile per- and polyfluoroalkyl substances (PFAS) in leather and coated leather by solvent extraction and liquid chromatography coupled with mass spectrometry. This document, taking into account the three-dimensional distribution of the fibres within leather, makes the evaluation of the PFAS with respect to the mass. compounds listed in Annex B, Table B.1, include acids, telomers, sulfonates and sulphonamide alcohols. Classes of other non-regulated compounds that can be determined by this document are listed in Annex C, Table C.1. alcohols (FTOH) in a sample cannot be correctly quantified if perfluoropolymers that release FTOH due to transesterification with the extraction solvent methanol are present in the sample. perfluoroheptyl group with the moiety (C7F15)C as one of the structural elements that can degrade to PFOA, e.g. polymers containing 2-perfluorooctylethanol (8:2 FTOH, CAS Registry Number®1) 678-39-7) bonded as esters. To determine whether these perfluoropolymers are intentionally present, it could be necessary to introduce an alkaline hydrolysis method to remove the 8:2 FTOH side-chain from the polymer. In addition, other FTOH, e.g. 6:2

BS EN ISO 23702-1:2023 Referenced Document

EN 15987 Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer (Endorsed by AENOR in July of 2003.)
ISO 2418 Leather — Chemical, physical, mechanical and fastness tests — Position and preparation of specimens for testing
ISO 3696 Water for analytical laboratory use; Specification and test methods
ISO 4044 Leather — Chemical tests — Preparation of chemical test samples

2023 BS EN ISO 23702-1:2023 Leather. Per- and polyfluoroalkyl substances. Determination of non-volatile compounds by extraction method using liquid chromatography
2018 BS EN ISO 23702-1:2018 Welding. Micro joining of 2nd generation high temperature superconductors. Qualification for welding and testing personnel