GB/T 36922-2018 in English
VALIDDetermination of organophosphorous flame retardants in toys—Gas chromatometry-mass spectrometry method
- Issued on:2018-12-28
- Implemented on:2018-12-28
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 36922-2018玩具中有机磷阻燃剂含量的测定 气相色谱-质谱联用法》由TC253（全国玩具标准化技术委员会）归口，主管部门为中国轻工业联合会。
Introduction
Interpretation of the detection standard for organophosphorus flame retardants in toys
| Detection items | Technical requirements | Scope of application |
|---|---|---|
| Determination of organophosphorus flame retardants | Gas chromatography-mass spectrometry (GC-MS) | Polymer materials in toys |
| Detection objects | Three flame retardants: TCEP, TDCP and TCPP | Safety standards for children’s toys |
| Detection limit | Lower limit of quantification: 1 mg/kg | Safety assessment of toy materials |
Standard Background and Significance
GB/T 36922-2018 "Determination of organophosphorus flame retardant content in toys by gas chromatography-mass spectrometry" is a standard proposed by the China Light Industry Federation and managed by the National Toy Standardization Technical Committee. The main drafting units of this standard include authoritative institutions such as the Mechanical and Electrical Products Testing Technology Center of the Shanghai Entry-Exit Inspection and Quarantine Bureau and the Toys and Infant Products Laboratory of the Inspection and Quarantine Technology Center of the Guangdong Entry-Exit Inspection and Quarantine Bureau.
Detection Principle and Method
This standard adopts gas chromatography-mass spectrometry (GC-MS) combined with external standard method for quantitative analysis. The specific steps include:
- Sample preparation:Cut the toy material into pieces less than 5mm×5mm and weigh 1.0g of sample.
- Extraction process:Use Soxhlet extractor with toluene as solvent to reflux and extract organophosphorus flame retardant.
- Purification and analysis:After the extract is filtered through a membrane, it is tested by GC-MS and qualitatively confirmed by characteristic ions and relative abundance ratios.
Technical requirements and specifications
Instruments and equipment:Special equipment such as gas chromatography-mass spectrometry (with EI source), Soxhlet extractor, and rotary evaporator are required.
Reagent standards:Toluene is used as the solvent, and the preparation of standard stock solutions and working solutions must meet the accuracy requirements.
Implementation recommendations
To ensure the accuracy of the test results, it is recommended to pay attention to the following points in actual operation:
- Extraction and analysis should be carried out strictly in accordance with the temperature conditions specified in the standard.
- Regularly calibrate the instruments and equipment to ensure the stability of GC-MS parameters.
- Blank experiments must be carried out simultaneously to eliminate interference factors.
- For positive results, confirmation is required based on characteristic ion fragments and their abundance ratios.
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