GB/T 41559-2022 in English
VALIDTextiles—Determination of isothiazolone compounds
- Issued on:2022-07-11
- Implemented on:2023-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
《GB/T 41559-2022纺织品 异噻唑啉酮类化合物的测定 》由TC209（全国纺织品标准化技术委员会）归口，TC209SC1（全国纺织品标准化技术委员会基础标准分会）执行，主管部门为中国纺织工业联合会。
Introduction
Technical analysis of detection methods
This standard establishes a dual detection path for 7 typical isothiazolinone preservatives (including key compounds such as MIT and CMIT) in textiles: the quantification limit of the HPLC-MS/MS method is as low as 0.1mg/kg, and the quantification limit of the HPLC-DAD method is 1.0mg/kg.
Technological Innovation and Standard Evolution
| Detection Method | Detection Limit | Applicable Scenarios | Extended Functions |
|---|---|---|---|
| HPLC-MS/MS | 0.1mg/kg | High Trace Detection | Precursor Ion Verification Function |
| HPLC-DAD | 1.0mg/kg | Conventional Quality Inspection | Multi-wavelength Matching |
Key Points of Operation
Example: Application case of a home textile enterprise in eastern Zhejiang
Using a C18 chromatographic column (1.9μm, 100×2.1mm) with a gradient elution program: 0-8min: 10→90% methanol, the mass spectrometry parameters were set to ESI+ mode, and 7 target compounds were successfully separated, with a recovery rate>92% (RSD≤6.8%)
Test implementation specifications
- Precision control: Absolute difference of parallel determination ≤ 10% of the arithmetic mean
- Quality control items: Retention time deviation <±2.5%, spectral matching difference <±2nm
- Spectrum judgment: The abundance deviation of qualitative ion pairs must meet the standard deviation table
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