GB/T 3392-2023 in English
VALIDDetermination of hydrocarbon impurities of propylene for industrial use—Gas chromatographic method
- Issued on:2023-11-27
- Implemented on:2024-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 3392-2023工业用丙烯中烃类杂质的测定 气相色谱法》由TC63（全国化学标准化技术委员会）归口，TC63SC4（全国化学标准化技术委员会石油化学分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
1. Standard Overview
GB/T3392-2023 "Gas Chromatographic Method for the Determination of Hydrocarbon Impurities in Industrial Propylene" is an important update of the national standard, replacing the previous GB/T3392-2003 version. This standard mainly stipulates the use of gas chromatography to detect hydrocarbon impurities in industrial propylene, including methane, ethane, ethylene and other components.
2. Background of Standard Revision
Since its first release in 1982, this standard has undergone several revisions to meet the needs of industrial development. This revision mainly focuses on the improvement of detection technology and the optimization of methods, especially reducing the detection limit of various hydrocarbon impurities, and adding quality assurance and control chapters.
3. Comparison of Technical Specifications
| Project | GB/T3392—2003 | GB/T3392—2023 |
|---|---|---|
| Detection limit | ≥1 mL/m³ | ≤1 mL/m³ (partial indicators) |
| Chromatographic column requirements | Specific parameters are not specified | Detailed provisions of chromatographic column parameters and operating conditions (see Table 1) |
| Detection method | Single gas chromatography method | Introduction of correction area normalization method and external standard method |
4. Interpretation of detection methods
Corrected area normalization method:This method calculates the impurity content by the peak area ratio of the standard sample and the test sample. It is suitable for quantitative analysis of known impurity components.
External standard method:It uses external standards for quantitative analysis. It is easy to operate but relies on accurate standard samples.
5. Implementation suggestions
- The laboratory should calibrate the instrument regularly to ensure that the performance of the chromatographic column and detector meets the requirements.
- Operators need to undergo professional training and be familiar with the operation and data processing methods of gas chromatographs.
- It is recommended to use standard substances for quality control to verify the accuracy of the test results.
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