GB/T 31126.1-2025Textiles - Determination of perfluorinated and polyfluorinated compounds - Part 1: Liquid chromatography-tandem mass spectrometry method (English PDF)

1 Scope

This document describes a method for determining perfluorinated and polyfluorinated compounds in textiles using liquid chromatography-tandem mass spectrometry (LC-MS/MS).

Note. Perfluorinated and polyfluorinated compounds and their salts are represented by the 30 compounds in Appendix A.

This document applies to all types of textile products.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 4669 Textiles - Determination of mass per unit length and mass per unit area of woven fabrics

GB/T 6682 Specifications and test methods for water used in analytical laboratories

GB/T 8170 Rules for rounding off numerical values and the representation and determination of limiting values

3 Terms and Definitions

This document does not contain any terms or definitions that need to be defined.

4 Principles

Perfluorinated and polyfluorinated compounds in textiles were extracted with methanol by ultrasonic extraction. The extract was concentrated, filtered through a microporous membrane, and analyzed by liquid chromatography-tandem mass spectrometry.

Determination was performed by LC-MS/MS, and quantification was performed by external standard method.

5 Reagents and Materials

Unless otherwise specified, all reagents are of chromatographic grade.