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一种新的IAEA-465认证参考材料,用于波罗的海沉积物中的放射性核化物

M K Pham¹, M-O Aust², J Bartocci¹

¹IAEA -Environment Laboratories, 4, Quai Antoine 1er, 98000, Principality of Monaco.

Journal of environmental radioactivity

|July 30, 2024

概括

为波罗的海海洋沉积物 (IAEA-465) 提供了一种新的认证参考材料 (CRM),该材料含有天然和人为放射性核素. 该CRM有助于进行放射性核素分析的质量控制和方法验证.

科学领域:

环境科学环境科学
核化学核化学核化学
海洋地球化学海洋地球化学

背景情况:

在海洋环境中精确测量放射性核素对于环境监测和安全评估至关重要.
波罗的海是一个独特的海洋生态系统,需要特定的参考材料进行准确的分析.
现有的参考材料可能不涵盖波罗的海沉积物中发现的放射性核素的全部光谱.

研究的目的:

开发和认证用于放射性核素分析的海洋沉积物参考材料 (IAEA-465).
为质量保证提供一套全面的自然和人为放射性核酸.
支持分析方法的验证和放射性核素测量培训.

主要方法:

使用波罗的海海洋沉积物的认证参考材料 (CRM) 的开发.
自然放射性核酸 (例如40K,210Pb,226Ra,232Th,238U) 和人为放射性核酸 (例如137Cs,239+240Pu,241Am) 的表征.
涉及27个实验室的实验室间比较,使用放射测量 (α,gamma,β光谱) 和质谱 (ICP-MS,AMS) 技术.

主要成果:

国际原子能机构-465的成功开发,波罗的海海洋沉积物的CRM.
11种天然和3种人为放射性核素的综合性表征,以及其他Pu同位素的信息值.
在多个实验室和分析技术中证明了结果的可比性.

结论:

国际原子能机构-465 CRM是确保海洋沉积物中放射性核化物测量的质量和可靠性的宝贵工具.
它有助于方法开发,验证和实验室间比较.
该CRM支持国际在环境放射性监测和研究方面的努力.

关键词:

波罗的海波罗的海波罗的海经过认证的参考材料.国际原子能机构-4655号海洋沉积物的海洋沉积物放射性核酸是放射性核酸中的一种.

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