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为了满足核工业系统核燃料生产质量控制和科研的要求 ,我单位继续开展单元素光谱标准溶液的研制工作。所研制的单元素光谱标准溶液均采用经典的化学分析方法——重量法定值 ,由国家一级标准物质或基准物质作为一次或二次量值传递 ;各元素溶液的质量浓度为1 0 0 0 mg/ L,总不确定度小于 2 % ;溶液的均匀性采用 F检验法检验 ,其 F值均小于 Fα 临界值 ;稳定性用 t检验法评价。该系列标准溶液至少可稳定 1 a 以上 ;标准溶液的单个指定杂质元素质量浓度经 ICP MS测定均小于 1 mg/ L。以上各项测定结果表明 ,所研制的 1 4种单元素光谱标准溶液均达国家二级标准物质指标。这些标准溶液可作为发射光谱、ICP光谱、原子吸收光谱、质谱、荧光光谱及化学分析等各个领域使用。
In order to meet the requirements of quality control and scientific research of nuclear fuel production in nuclear industry system, our company continued to develop the single-element spectrum standard solution. The developed single-element spectrophotometric standard solutions are all based on the classical chemical analysis method - the weight of the standard value, the first-class national standard substances or reference substance as a single or secondary value transfer; the mass concentration of each element solution is 1 0 0 0 mg / L and the total uncertainty was less than 2%. The uniformity of solution was tested by F test, the F values were less than the critical value of Fα, and the stability was evaluated by t test. This series of standard solutions can be stable for at least 1 year; the standard solution of a single specified impurity element concentration by ICP MS measured less than 1 mg / L. The above measurement results show that the developed 14 kinds of single-element spectral standard solution reached the national secondary standard indicators. These standard solutions can be used as emission spectroscopy, ICP spectroscopy, atomic absorption spectrometry, mass spectrometry, fluorescence spectroscopy and chemical analysis and other fields.