GB/T 34692-2017 in English
VALIDThermoplastic elastomer-Determination of halogen-Oxygen bomb combustion-ion chromatography
- Issued on:2017-11-01
- Implemented on:2018-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 34692-2017热塑性弹性体 卤素含量的测定 氧弹燃烧-离子色谱法》由TC35（全国橡胶与橡胶制品标准化技术委员会）归口，TC35SC2（全国橡胶与橡胶制品标准化技术委员会通用试验方法分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
In-depth interpretation of GB/T 34692—2017 standard
1. Background of standard formulation and analysis of technological evolution
With the widespread application of thermoplastic elastomers in the industrial field, the demand for accurate determination of halogen content in materials is growing. GB/T 34692—2017 standard is based on oxygen bomb combustion-ion chromatography, combined with the progress of modern laboratory analysis technology, and aims to provide a set of efficient and accurate detection methods for this field.
2. Method principle and key technologies
| Step name | Key description | Technical advantages |
|---|---|---|
| Sample preparation | The sample needs to be processed to a particle size of less than 2mm to avoid the loss of chlorine and bromine elements. | Ensure the accuracy and repeatability of the test results. |
| Oxygen bomb combustion | Completely burn the sample in a high-pressure oxygen environment to generate soluble halides. | Provide an efficient oxidation environment to ensure that the sample is fully burned. |
3. Comparative analysis of standard frameworks
The following is a comparison table between GB/T 34692-2017 and other relevant standards:
| Comparison dimensions | GB/T 34692-2017 | ISO reference standards |
|---|---|---|
| Detection range | Chlorine, bromine: ≤500 mg/kg | ... |
| Method sensitivity | Detection limit: chlorine 15 mg/kg, bromine 75 mg/kg | ... |
4. Implementation recommendations and best practices
Laboratory operation precautions:
- Ensure the tightness of the oxygen bomb combustion device to prevent oxygen leakage from affecting the test results.
- Regularly calibrate the ion chromatograph to ensure test accuracy.
- Blank tests should be performed simultaneously with sample determination to eliminate reagent and environmental interference.
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