SN/T 5288-2022 in English
VALIDImport and export functional textiles - Determination of extractable rare earth elements
- Issued on:2022-03-14
- Implemented on:2022-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$127.00
Introduction
Analysis of the core content of the standard
This standard uses inductively coupled plasma mass spectrometer (ICP-MS) to determine the total amount of 15 rare earth elements, with a detection limit of 0.01 mg/kg, and is suitable for safety assessment of textiles with special functions such as anti-ultraviolet and antibacterial.
Comparison of key technologies
| Detection elements | This standard method | Conventional method | Technical advantages |
|---|---|---|---|
| Pretreatment | Acid sweat extraction | Strong acid digestion | Simulation of real contact conditions |
| Analytical instrument | ICP-MS | Atomic absorption | Multi-element simultaneous detection |
| Internal standard method | Indium (In) calibration | External standard method | Elimination of matrix effect |
| Precision | ≤10% | 15-20% | More reliable data |
Key operating points
Standard solution configuration
It is necessary to prepare a working curve with 6 concentration gradients (0-50μg/L), including 15 kinds of element mixed standard solutions such as yttrium (Y) and lanthanum (La), and prepare and use them now to ensure accuracy.
Instrument parameter optimization
It is recommended to use a semiconductor temperature controlled spray chamber (2℃±0.1℃), a carrier gas flow rate of 0.79L/min, and a high frequency power of 1550W to ensure CeO/Ce≤1.5%.
Recommendations for the implementation of the standard
- Laboratories should establish a verification procedure for the shelf life of acid sweat (it is recommended to prepare and use it now)
- Perform regular maintenance of the cone hole (the recommended life of the Ni cone is about 100 hours)
- Each batch of tests must include blank control and spike recovery experiments
- Pay attention to the mass interference between rare earth elements (such as the interference of Nd on Ce)
Industry application value
This standard provides key technical support for the export of functional textiles, especially for:
- Restrictions on rare earth elements in the EU REACH Regulation
- Compliance verification of Japan's "Law on the Control of Hazardous Substances in Household Products"
- Testing basis for ecological textile certification (OEKO-TEX®)
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
SN 0283-1994 in English
\"Method for Inspection of Dichlorodipyridinol Residues in Exported Poultry Meat\"
1994-02-18 -
SN/T 4218-2015 in English
Inspection rules for import and export dangerous chemical products―Ethyl acetate
2015-02-09 -
SN/T 5564-2023 in English
Standard practice for manual sampling of hydrogen sulfide content crude oil by ships
2023-05-05 -
SN/T 2985-2020 in English
Quarantine protocol for equine influenza
2020-12-30 -
SN/T 0794-2018 in English
Rules for the inspection of American ginseng for import and export
2018-03-12 -
SN/T 0244-1994 in English
\"General Rules for Inspection and Certification of Imported Mechanical and Electrical Instruments\"
1993-08-01 -
SN/T 3241.4-2012 in English
Technical requirements for the inspection of household and similar electrical appliances for import and export-Part 4:Energy efficiency of room air conditioner
2012-12-12
