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在两个国家计量研究所对单元校准解决方案的不同表征方法进行比较

Murat Tunç¹, Cristhian Paredes², F Gonca Coşkun³

¹TÜBİTAK-UME National Metrology Institute, Gebze Yerleşkesi Barış Mah. Dr. Zeki Acar Cad. No:1, 41470, Gebze, Kocaeli, Türkiye. tunc.murat@tubitak.gov.tr.

Analytical and bioanalytical chemistry

|January 17, 2025

概括

土耳其和哥伦比亚的国家计量研究所使用不同的方法准备和表征校准解决方案. 他们的结果显示出极好的一致性,证明了元素分析校准的各种方法的可靠性.

科学领域:

分析化学分析化学
计量学计量学计量学
材料科学材料科学材料科学

背景情况:

单元素校准解决方案对于元素分析至关重要,确保测量可追溯到国际单位系统 (SI).
国家计量研究所 (NMI) 将这些材料作为认证的参考材料 (CRM),其高精度表征是关键步骤.
校准解决方案广泛用于各种分析应用.

研究的目的:

为了比较土耳其国家计量研究所 (TÜBİTAK-UME) 和哥伦比亚国家计量研究所 (INM(CO)) 用于制备和表征校准溶液的不同方法.
为了验证独立生产的CRM的准确性和可靠性.
在元素分析中评估不同计量可追溯路径的兼容性.

主要方法:

TÜBİTAK-UME使用一次性差异方法 (PDM) 来确定金属的纯度,通过仪器技术量化杂质,并将其用于重力测量CRM准备和ICP-OES校准.
INM(CO) 采用了用EDTA进行重力度定位,而EDTA盐以前是通过定位学进行的,以测量CRM溶液中的.
两家NMI都准备了独立批次的校准溶液,其标称值为1gkg-1和交叉分配的质量分数值.

主要成果:

尽管采用了从根本上不同的测量方法和独立的可追溯路线到SI,但两家NMI生产的校准解决方案在它们所述的不确定性范围内显示出了很好的一致性.
描述方法在生产可靠的CRM方面表现出有效性.
结果证实了准备好的校准溶液的高精度.

结论:

该研究验证了各种表征方法在生产高质量的校准解决方案中的有效性.
它强调了不同测量技术的可靠性和适应性,以满足元素分析的严格计量标准.
这种合作努力提高了元素分析测量的稳定性,并加强了可追溯到SI的可追溯性.

关键词:

经过认证的参考材料.标志性描述标志性描述基本面分析基本面分析重力测量定位定位的重力测量定位.一个元素的校准解决方案.主要差异方法的主要差异方法.

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