加速器质谱测量海水中239Pu

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加速器质谱测量海水中²³⁹Pu

Measurement of ultra-trace level ²³⁹Pu in seawater samples by accelerator mass spectrometry

加速器质谱测量海水中²³⁹Pu

Measurement of ultra-trace level ²³⁹Pu in seawater samples by accelerator mass spectrometry

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辐射防护 ›› 2025, Vol. 45 ›› Issue (2): 133-140.

邬蒙蒙, 尹云云, 郭庐阵, 吕天林, 汪传高, 庞洪超

中国原子能科学研究院,北京 102413

收稿日期:2024-03-05 出版日期:2025-03-20 发布日期:2025-03-18
作者简介:邬蒙蒙(1990—),女,2010年本科毕业于武汉大学东湖分校自动化专业,2013年硕士毕业于成都理工大学辐射防护及环境保护专业,2016年毕业于中国原子能科学研究院辐射防护及环境保护专业,获博士学位,副研究员。E-mail:maitianfengying@163.com

WU Mengmeng, YIN Yunyun, GUO Luzhen, LV Tianlin, WANG Chuangao, PANG Hongchao

China Institute of Atomic Energy, Beijing 102413

Received:2024-03-05 Online:2025-03-20 Published:2025-03-18

摘要： 采用中国原子能科学研究院自主研制的加速器质谱(AMS)系统对海水中²³⁹Pu进行测量,用阴离子树脂对样品中²³⁹Pu进行了分离纯化、氢氧化铁共沉淀法制备测量使用靶样品。制备一组自来水样品作为空白样品得到测量方法的检出限为0.9 fg(2.0 μBq),对实际海水样品中²³⁹Pu进行了测量和分析,并对测量方法的不确定度进行了分析。

关键词: 加速器质谱, 海水, 放射性测量, ²³⁹Pu

Abstract: ²³⁹Pu in seawater was measured by accelerator mass spectrometry (AMS) system independently developed by China Institute of Atomic Energy. The ²³⁹Pu in seawater samples was separated and purified by anion resin, and the target samples were prepared by ferric hydroxide co-precipitation method. A set of tap water samples was prepared as blank samples to evaluate the measurement method with a detection limit of 0.9 fg (2.0 μBq). By this method, ²³⁹Pu in seawater samples was measured and analyzed. And the uncertainty of the measurement method was analyzed.

Key words: accelerator mass spectrometry, seawater, radioactivity measurement, ²³⁹Pu

中图分类号:

X837

邬蒙蒙, 尹云云, 郭庐阵, 吕天林, 汪传高, 庞洪超. 加速器质谱测量海水中²³⁹Pu[J]. 辐射防护, 2025, 45(2): 133-140.

WU Mengmeng, YIN Yunyun, GUO Luzhen, LV Tianlin, WANG Chuangao, PANG Hongchao. Measurement of ultra-trace level ²³⁹Pu in seawater samples by accelerator mass spectrometry[J]. RADIATION PROTECTION, 2025, 45(2): 133-140.

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