Abstract—

In this paper, we examine the purity level and impurity composition of the titanium, zirconium, and hafnium samples at the Exhibition–Collection of Extrapure Substances and present estimates of the average and total concentrations of elemental impurities in the purest samples. We examine the impurity composition of the array of the group 4 elements and contributions of particular groups of impurities and discuss the purity level of the group 4 elements and their compounds manufactured in Russia and abroad.

中文翻译：

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钛、锆、铪的纯度等级（根据展览材料——超纯物质采集）

摘要-

在本文中，我们检查了超纯物质收藏展览会上钛、锆和铪样品的纯度水平和杂质成分，并提出了最纯样品中元素杂质的平均浓度和总浓度的估计值。我们研究了第 4 族元素阵列的杂质组成和特定杂质族的贡献，并讨论了俄罗斯和国外制造的第 4 族元素及其化合物的纯度水平。