GB/T 24279.2-2021Textiles - Determination of certain flame retardants - Part 2: Phosphorus flame retardants (English PDF)

Foreword

This Part was drafted in accordance with the rules given in GB/T 1.1-2020

"Directives for standardization - Part 1: Rules for the structure and drafting of

standardizing documents".

This Part is Part 2 of GB/T 24279 "Textiles - Determination of certain flame

retardants". The following parts of GB/T 24279 have been issued:

- Part 1: Brominated flame retardants;

- Part 2: Phosphorus flame retardants.

This Part uses redrafting method to modify and adopt ISO 17881-2:2016

"Textiles - Determination of certain flame retardants - Part 2: Phosphorus flame

retardants".

The structural differences between this Part and ISO 17881-2:2016 are as

follows:

- added "Normative references" as Clause 2;

- added "Terms and definitions" as Clause 3;

- added "Precision" as Clause 9.

The technical differences between this Part and ISO 17881-2:2016 are as

follows:

- In Clause 5, changed analytically pure to chromatographically pure, added

the purity of the tested standard substance for liquid chromatography

analysis; according to the relevant requirements of prohibited flame

retardants, added the test substance "Di-(2,3-dibromopropyl) phosphate";

- in 5.8, added GB/T 6682 as a reference; specified the requirements for

water used;

- in 6.7, added the balance with a division of 0.01g for weighing textile

specimen;

- in Clause 8, added the provisions that dilution factors and calculation results

are kept to one decimal place, so as to make the calculation and

expression of results clearer;

- in Clause 9, according to relevant domestic standards, added relevant

description on precision.

This Part made the following editorial modifications:

Textiles - Determination of certain flame retardants -

Part 2: Phosphorus flame retardants

WARNING - Personnel using this document should have practical

experience in formal laboratory work. This document does not indicate all

possible security issues. The user is responsible for taking appropriate

safety and health measures and ensuring compliance with the conditions

stipulated by relevant national laws and regulations.

1 Scope

This Part specifies the test method that uses the high-performance liquid

chromatography-tandem mass spectrometer (HPLC-MS/MS) to determine

certain phosphorus flame retardants in textiles.

This Part is applicable to various textiles.

2 Normative references

The following documents are essential to the application of this document. For

the dated documents, only the versions with the dates indicated are applicable

to this document; for the undated documents, only the latest version (including

all the amendments) is applicable to this standard.

GB/T 6682, Water for analytical laboratory use - Specification and test

methods (GB/T 6682-2008, ISO 3696:1987, MOD)

3 Terms and definitions

There are no terms and definitions that need to be defined in this document.

4 Principle

Use acetone as extractant. Extract flame retardant from textile specimens in

ultrasonic generator. Use HPLC-MS/MS to determine flame retardant. Use

external standard method to quantify.

Use acetonitrile (5.6) as solvent to respectively prepare standard stock solution

of each flame retardant (5.1~5.4). The concentration is 1000µg/mL.