【摘要】 研制出一种天然基质的河流沉积物环境放射性标准物质。由多个实验室用多种准确可靠的方法对其中９种天然的和人工的放射性核素进行了定值。介绍样品制备、均匀性及稳定性检验、核素定值方法和定值结果。更多还原

【Abstract】 A river kind of sediment Certified Reference Material (CRM) based on natural-matrix for environmental radioactivity has been developed. Nine natural and artificial radionuclides in the CRM were certified by two or more laboratories with one or more methods. The sample preparation, homogeneity test, stability inspection and the methods and results for radionuclide certification are described.更多还原