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Substoichiometric and non-destructive determination of trace impurities in high-purity optical glasses by neutron activation analysis

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Abstract

A method of radioactivation analysis has been developed for the determination of 17 elements as impurities in high-purity optical glasses. The substoichiometric extraction of platinum with dithizone was studied and a simple procedure was proposed for the determination of platinum. Copper and manganese were also determined substoichiometrically by the extractions with dithizone and with thenoyltrifluoracetone, respectively. The non-destructive γ-ray spectrometry using a Ge(Li) detector has been applied for the determination of the other 14 elements (Ag, Co, Cr, Eu, Fe, Ir, Sc, Zn, Cs, Hf, Rb, Sb, Ta and Tb). Impurity elements at the ppb level were analysed by the proposed method and it is shown that the method is reliable for the determination of trace impurities in high-purity optical glasses.

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Authors and Affiliations

  1. Ibaraki Electrical Communication Laboratory, Nippon Telegraph and Telephone Public Corporation, Tokai, Ibaraki, Japan

    K. Kudo, K. Kobayashi & T. Shigematsu

Authors
  1. K. Kudo
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  2. K. Kobayashi
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  3. T. Shigematsu
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Kudo, K., Kobayashi, K. & Shigematsu, T. Substoichiometric and non-destructive determination of trace impurities in high-purity optical glasses by neutron activation analysis. J. Radioanal. Chem. 27, 329–344 (1975). https://doi.org/10.1007/BF02520573

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  • DOI: https://doi.org/10.1007/BF02520573

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