1 Scope
This part specifies the method for determining the free and hydrolyzed formaldehyde content or the released formaldehyde content of textiles by adopting the high performance liquid chromatography-ultraviolet detector (HPLC/UVD)/diode array detector (HPLC/DAD).
This part is applicable to any kinds of textiles.
This part is applicable to textiles with formaldehyde content between 5mg/kg and 1,000mg/kg, and especially applicable to samples with dark extract.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding the corrections), or revisions of, any of these publications do not apply. However, the parties who enter into agreement according to this standard are encouraged to study whether the latest editions of these documents apply. For undated references, the latest edition applies to this part.
GB/T 2912.1-2009 Textiles-Determination of Formaldehyde-Part 1: Free and Hydrolyzed Formaldehyde (Water Extraction Method) (ISO 14184-1:1998, MOD)
GB/T 2912.2-2009 Textiles-Determination of Formaldehyde-Part 2: Released Formaldehyde (Vapour Absorption Method) (ISO 14184-2:1998, MOD)
GB/T 6682 Water for Analytical Laboratory Use-Specification and Test Methods (GB/T 6682-2008, ISO 3696:1987, MOD)
3 Principle
1 Scope
2 Normative References
3 Principle
4 Reagents and Materials
5 Equipment and Instruments
6 Analysis Procedures
7 Result Calculation
8 Detection Limit and Recovery Rate
9 Test Report
Appendix A (Informative) The Retention Time and Chromatogram of Liquid Chromatography of 2, 4-Dinitrophenylhydrazone
