SN/T 5286-2021 in English
VALIDTextiles for import and export - Determination of dimethylfumarate (DMF) - Surface plasmon resonance (SPR) method
- Issued on:2021-11-22
- Implemented on:2022-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$175.00
| Standard No: | SN/T 5286-2021 |
| Document status: | VALID |
| Title in English: | Textiles for import and export - Determination of dimethylfumarate (DMF) - Surface plasmon resonance (SPR) method |
| Title in Chinese: | 进出口纺织品 富马酸二甲酯的测定 表面等离子体共振法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2021-11-22 |
| Implemented on: | 2022-06-01 |
| Professional Classification: | SN-Import&Export Inspection |
| Related Topics: | surface plasmon
resonance surface plasmon Plasmon resonance instrument Dimethyl fumarate Injection cell Plasmon resonance instrument plasma in english surface ion Surface Plasmons surface plasmon technology second hand resonance import ions surface plasmon surface plasmon plasma methylation plasma surface resonance method resonator resonance method dmf dimethyl fumarate surface plasmon Optical Surface Plasmon Resonance (SPR) ion cyclotron resonance Surface Plasmon Resonance Company Detection Determination of divalent copper ions |
Introduction
Standard Technical Background
With the strict restrictions on dimethyl fumarate (DMF) by the EU REACH regulation, my country issued the SN/T 5286 standard in 2021, innovatively using surface plasmon resonance to achieve trace detection of DMF in textiles. Compared with traditional GC-MS, this method has technical advantages such as no labeling required and real-time monitoring.
Core Method Principles
| Technical Elements | Traditional Methods | SPR Method |
|---|---|---|
| Detection Principle | Chromatographic Separation | Optical Refractive Index Change |
| Detection Limit (mg/kg) | 0.05 | 0.01 |
| Analysis Time (min) | ＞60 | 30 |
Typical Case: In the inspection of a sofa fabric exported to the EU, class=instrument>CM5 chip modified with DMF-BSA antigen, the △RU value was measured to be 382 response units, and the DMF content was detected to be 0.08 mg/kg after conversion by the standard curve, avoiding trade claims.
Key operating specifications
- Chip activation: EDC/NHS mixture volume ratio must be strictly controlled at 1:1
- Antigen coupling: DMF-BSA concentration is optimized to 50mg/L
- Regeneration conditions: Glycine-HCl solution (pH3.6) flow rate 100μL/min
Implementation recommendations
- The laboratory should establish a SPR instrument temperature compensation system (1-2℃ lower than room temperature)
- It is recommended to perform chip light intensity calibration for each batch of tests (attenuation ≤20%)
- The extract needs to be filtered through a 0.22μm PTFE membrane
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