1 Scope
This standard specifies two test methods of dimethyl fumarate in footwear and footwear component - gas chromatography-mass spectrometry (hereinafter referred to as GC-MS) and gas chromatography-mass spectrometry-mass spectrometry (hereinafter referred to as GC-MS-MS).
This standard is applicable to determination of dimethyl fumarate in footwear and footwear components.
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 (including any amendments) applies to this document.
GB/T 22049 Footwear - Standard Atmospheres for Conditioning and Testing of Footwear and Components for Footwear
3 Principle
The dimethyl fumarate in the specimen is extracted with dehydrated ethyl acetate through ultrasonic method, the extracting solution, after being purified, is determined and confirmed with GC-MS or GC-MS-MS and quantified with external standard method.
Note: if the interference of matrix determined with GC-MS is severe and the content of dimethyl fumarate is low, only GC-MS-MS may be adopted.
4 Reagents and Materials
Foreword I
1 Scope
2 Normative References
3 Principle
4 Reagents and Materials
5 Apparatus and Equipment
6 Test Procedure
7 Blank Test
8 Result Calculation
9 Determination of Recovery
10 Result Expression
11 Lower Detection Limit
12 Precision
Appendix A (Informative) GC-MS Standard Spectrogram of Dimethyl Fumarate for Selective Iron Current Monitoring
Appendix B (Informative) GC-MS-MS Standard Spectrogram of Dimethyl Fumarate
