Development of Reference Materials of Tin, Selenium and Antimony Solutions

   The article describes the work on creating reference materials for the composition of tin, selenium and antimony solutions, which are solutions of pure tin, selenium and antimony in mineral acids packaged in polymer bottles. The development of reference materials was carried out in several stages: preparation of solutions from pure substances and their packaging, determination of the certified value and homogeneity assessment, and stability testing of reference materials. The certified characteristics of the reference materials “mass fraction” and “mass concentration of an element” were established by atomic emission spectrometry with inductively coupled plasma using equipment of the State Secondary Standard for Units of Mass Fraction and Mass (Molar) Concentration of Metals in Liquid and Solid Substances and Materials GVET 196–1. The developed reference materials have been entered into the Federal Information Fund for Ensuring the Uniformity of Measurements in the form of sets of GSO 12278-2023/GSO 12281-2023, GSO 12703-2024/GSO 12706-2024, GSO 12707-2024/ GSO 12710-2024, each of which consists of four types differing in the value of certified characteristics.

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