GB/T 34435-2017 in English
VALIDDetermination of migratable chromium(Ⅵ) in toy materials—High performance liquid chromatography-inductively coupled plasma mass spectrometry(HPLC-ICP-MS)
- Issued on:2017-10-14
- Implemented on:2018-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 34435-2017玩具材料中可迁移六价铬的测定 高效液相色谱-电感耦合等离子体质谱法》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
GB/T 34435—2017 Standard Interpretation
1. Background and Significance of the Standard
Hexavalent chromium is a highly toxic chemical substance. Long-term exposure or ingestion may pose a serious threat to children's health. GB/T 34435—2017 standard aims to standardize the determination method of migratable hexavalent chromium in toy materials, ensure that toy products meet national safety requirements, and protect children from potential hazards.
2. Determination principle and technical route
This standard adopts high performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICP-MS) for determination. This method uses the difference in ionic forms of hexavalent chromium and trivalent chromium at different pH values, separates through anion columns and then introduces into mass spectrometer for detection, and quantifies by external standard method.
Key steps:Sample extraction, pH adjustment, chromatographic separation, mass spectrometry detection.
3. Comparison of Standard Frameworks
| Standard Dimensions | Scope of Application | Test Method | Limit Requirements |
|---|---|---|---|
| GB/T 34435—2017 | Migration of Hexavalent Chromium in Toy Materials | HPLC-ICP-MS | - |
| EN 71-3:2013+A1:2014 | Migration of Elements in Toy Materials | AAS or ICP-OES | - |
| DIN 58936-2-A1:2014 | Migration Elements in Toy Materials | AAS or ICP-MS | - |
4. Implementation Suggestions and Precautions
Case Study:A toy company used this standard to test coating materials and found that the hexavalent chromium content exceeded the standard. By adjusting the raw material supplier and production process, the hexavalent chromium content was successfully reduced to a safe level.
Implementation Suggestions:
- Strictly follow the sample extraction and preparation steps
- Ensure instrument calibration and reagent purity
- Perform blank tests and method validation regularly
- Establish a sound quality control system
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