A new technique for estimating the average and total impurity concentrations in samples of high-purity substances

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• 作者：K. K. Malyshev ; O. P. Lazukina ; E. N. Volkova ; M. F. Churbanov
• 关键词：high ; purity substances ; impurity composition ; impurity content ; technique for assessing the purity of substances ; Exhibition–Collection of Extrapure Substances
• 刊名：Inorganic Materials
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：52
• 期：3
• 页码：313-323
• 全文大小：860 KB
• 参考文献：1.Devyatykh, G.G., Stepanov, V.M., Churbanov, M.F., et al., General aspects of impurity distributions in highpurity substances, Dokl. Akad. Nauk SSSR, 1980, vol. 254, no. 3, pp. 670–674.
  2.Malyshev, K.K. and Stepanov, V.M., Statistical estimation of the total impurity concentration from incomplete analytical data, illustrated by the examples of tellurium, manganese, and aluminum, Vysokochist. Veshchestva, 1990, no. 2, pp. 229–236.
  3.Devyatykh, G.G., Kovalev, I.D., Malyshev, K.K., et al., Analysis of data on the impurity composition of solid elemental substances in the Exhibition–Collection of Extrapure Substances, Vysokochist. Veshchestva, 1992, nos. 5–6, pp. 7–11.
  4.Kovalev, I.D., Karpov, Yu.A., Potapov, A.M., et al., Assessment of interlaboratory and between-method discrepancies in composition certification of highpurity solid elemental substances and nanomaterials, Inorg. Mater., 2013, vol. 49, no. 4, pp. 368–375.CrossRef
  
• 作者单位：K. K. Malyshev (1)
  O. P. Lazukina (1)
  E. N. Volkova (1)
  M. F. Churbanov (1)
  
  1. Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, ul. Tropinina 49, Nizhny Novgorod, 603950, Russia
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Inorganic Chemistry
  Industrial Chemistry and Chemical Engineering
  Materials Science
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3172

文摘

A new technique in which the entire set of impurities in a substance is represented as a set of impurity classes has been developed for estimating the most likely and total concentrations of elemental impurities in samples of high-purity substances. Estimates of the purity of samples with the use of this technique have lower random and systematic errors in comparison with estimates without impurity classification. It has been shown that estimates of the integral characteristics of individual impurity classes in the total set of samples allow one to find the expectation of the total concentration for impurity classes which are represented in particular samples only by detection limits. The results are illustrated by the example of the rare-earth oxide samples in the Exhibition–Collection of Extrapure Substances.