This standard specifies five methods for determination of triclosan residues in textiles, i.e., high-performance liquid chromatography, liquid chromatography-tandem mass spectrometry, gas chromatography, gas chromatography-mass spectrometry and gas chromatography-tandem mass spectrometry.
This standard is applicable to textile materials and their products.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 6682 Water for analytical laboratory use - Specification and test methods
3 Principle
Non-derivatization pretreatment method: the specimen is ultrasonically extracted with methanol, and after the extract is concentrated to constant volume, the triclosan residues in textiles are determined by high-performance liquid chromatography or liquid chromatography-tandem mass spectrometry, and quantified by external standard method.
Derivatization pretreatment method: the specimen is ultrasonically extracted with methanol, the extract is concentrated, transferred into sodium tetraborate solution, acetylated with acetic anhydride, and extracted with n-hexane; the triclosan residues in textiles are determined by gas chromatography, gas chromatography-mass spectrometry or gas chromatography-tandem mass spectrometry, and quantified by external standard method.
4 Reagents and materials
Unless otherwise specified, analytically-pure reagents shall be used in the analysis.
4.1 Water: Grade 3 water and Grade 1 water specified in GB/T 6682 are used for the pretreatment and the analytical instrument respectively.
GB/T 33273-2016 The following standards are cited：
