| 氚气标准源的研制 |
| Development of tritium reference gas |
| |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
| 中文摘要: |
| 氚是涉氚场所中辐射防护监测的重点核素，对涉氚场所中的气态氚浓度进行有效监测具有重要的意义。根据GB/T 7165.5-2008第5部分要求，氚活度监测校准应使用与被测对象成分一致的参考源，即标准氚气。解决该难题需要研究并建立标准氚气的制备方法和定值方法，确保氚气活度量值源头的有效性。基于稀释法研制了气载氚标准源，通过长度补偿法进行氚活度浓度定值，并进行了不确定度的分析和评定。氚气标准源的研制填补了国内该领域的空白，为氚监测仪的量值溯源提供了重要支撑。 |
| 英文摘要: |
| Tritium is a key nuclide for radiation protection monitoring in tritium related sites. It is of great significance to effectively monitor the concentration of gaseous tritium. According to the requirements in Part 5 of GB/T7165.5-2008, the reference tritium gas consistent in composition with the object to be tested should be used in the tritium activity monitoring and calibration. To solve this problem, we need to study and establish the preparation method and certification method of reference tritium gas to ensure the effectiveness of the source of tritium gas activity measurement. Tritium reference gas is prepared based on dilution method, the tritium activity concentration is measured based on length compensation method, and the measurement uncertainty is analyzed. The development of tritium gas standard source fills the gap in this field in China and provides an important support for the traceability of tritium monitoring instrument. |
|
| 中文关键词: 氚气标准源 活度浓度 不确定度 量值溯源 |
| 英文关键词:tritium reference gas activity concentration uncertainty measurement traceability |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2022.04.08 |
| 引用本文：罗瑞, 徐利军, 林敏, 毛娜请, 陈克胜, 夏文.氚气标准源的研制[J].计测技术,2022,(4):. |
| 关闭 |
