Development of reference materials of the rare and rare-earth metals compositions using State primary standard for units of mass (molar) fraction and mass (molar) concentration of components in liquid and solid substances and materials based on spectral methods GET 196-2023

The metrological support for physicochemical measurements of the compositions of materials containing rare and rare-earth metals is considered. Special attention is paid to the role of standard samples of the composition of substances and materials in ensuring the uniformity of measurements in spectral studies.

A methodology for the development of reference materials using State primary standard for units of mass (molar) fraction and mass (molar) concentration of components in liquid and solid substances and materials based on spectral methods GET 196-2023 equipment is described. As a result of the work, 16 standard samples of the composition of rare and rare-earth metals of the approved type have been developed, and their metrological characteristics are given. The high accuracy of measurements of the characteristics of reference materials provided by the use of GET 196-2023 is shown. Metrological support for analytical control of rare and rare-earth metals is of great practical importance for the development of industry, scientific research, and product quality assurance. Therefore, the results of this work are relevant for ensuring the traceability of physical and chemical measurements in various fields of science and technology, including metallurgy and chemical industries, medicine, environmental monitoring, electronics and information technology, the energy sector, the defense industry, the aerospace industry, and others.

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