1 Scope
This standard specifies the method for determining nine fluorescent brighteners in textiles (see Annex A) with high-performance liquid chromatograph - fluorescence detector (HPLC-FLD).
This standard is applicable to various textiles.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the referenced documents (including any amendments) applies.
GB/T 6682 Water for analytical laboratory use - Specification and test methods
3 Principle
The specimen is placed in the mixed solution of dimethyl formamide and water. After ultrasonic extraction, it is determined by high-performance liquid chromatograph equipped with fluorescence detector (HPLC-FLD). The retention time is used for qualitative analysis of the to-be-determined substance, and the external standard method is used for quantitative analysis of the to-be-determined substance.
Foreword i
1 Scope
2 Normative references
3 Principle
4 Reagents and materials
5 Apparatuses
6 Analytical procedures
7 Result calculation
8 Low determination limit, recovery rate and precision
9 Test report
Annex A (Normative) Basic information of nine fluorescent brighteners
Annex B (Informative) Relevant detection information of nine fluorescent brighteners
Annex C (Informative) Liquid chromatograms of nine fluorescent brighteners in textiles