GB/T 39606-2020 in English
VALIDTextiles—Determination of paraben esters antibacterial agents
- Issued on:2020-12-14
- Implemented on:2021-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
| Standard No: | GB/T 39606-2020 |
| Document status: | VALID |
| Title in English: | Textiles—Determination of paraben esters antibacterial agents |
| Title in Chinese: | 纺织品 尼泊金酯类抗菌剂的测定 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-12-14 |
| Implemented on: | 2021-07-01 |
| ICS Classification: | 59.080.01-Textiles in general |
| Chinese Classification: | W04-Basic standards and general methods |
| Professional Classification: | GB-National Standard |
| Related Keywords: | antibacterial agents introduction standard technical background
paraben esters textiles determination antimicrobial agents hplc-dad method lc-ms/ms method detection limit |
| Related Topics: | Ni
Ester type antiwear agent Esters Antibacterial agents concentration of antimicrobial agent How to measure fungi GBT39606 GB/T 39606-2020 paraben and benzyl alcohol |
《GB/T 39606-2020纺织品 尼泊金酯类抗菌剂的测定》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
Standard Technical Background
With the improvement of functional requirements for textiles, paraben antimicrobial agents are increasingly used in the textile industry. The release of GB/T 39606-2020 fills the gap in the testing standards for such substances in my country's textiles and provides a unified methodological basis for industry supervision.
Comparison of core detection methods
| Technical parameters | HPLC-DAD method | LC-MS/MS method |
|---|---|---|
| Detection limit | 5.0 mg/kg | 0.5 mg/kg |
| Chromatographic column | C8 column (5 μm) | C18 column (1.7 μm) |
| Analysis time | 19.1 min | 6.1 min |
| Qualitative basis | Retention time + UV spectrum | Retention time + secondary mass spectrometry |
Key operating points
Sample pretreatment
Use polytetrafluoroethylene screw cap extraction tube for 70℃ ultrasonic extraction. It is recommended that:
- Cut the pieces to size ≤5mm×5mm
- Methanol dosage 15mL/g sample
- Extraction time (30±2)min
Instrument optimization suggestions
The actual case shows that special attention should be paid to the following in LC-MS/MS analysis:
- Optimization of negative ion mode of electrospray ionization source (ESI)
- Maintain the collision gas (Ar) flow rate at 0.16 mL/min
- Heptylparaben needs to increase the cone voltage to 45V
Recommendations for standard implementation
Principles for method selection
Select a method based on detection needs:
- Conventional screening: HPLC-DAD method (lower cost)
- Trace analysis: LC-MS/MS method (high sensitivity)
Key points for quality control
Recommendations for laboratories:
- Perform a blank test on each batch of samples
- Standard solutions should be stored away from light (4℃)
- Regularly verify instrument linearity (R²≥0.995)
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