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<p>This study proposes a strategy to determine the purity of Ti metal for developing primary standard solutions. The mass fractions of 78 elements in Ti metal were analyzed, and 35 elements were quantified while MDV were obtained for the others by neutron activation analysis, inert gas fusion-based analytical methods, and atomic spectrometry. Additionally, mass fractions of four noble gases and six radioactive nuclides were estimated in the Ti metal. The purity of Ti with the combined standard uncertainty was determined to be 99.939% ± 0.0055%. Measurements of O, Fe, C, N, Ni, H, and Si measurements were the main source of uncertainty in the evaluation of Ti metal purity.</p>

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Purity determination of high-purity Ti metal by the mass-balance approach for the development of a primary Ti standard solution

  • 期刊论文

  • 发表日期：

    2025年10月24日

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  • Tsutomu Miura,
  • Masaki Ohata,
  • Ayaka Wada,
  • Tomohiro Narukawa

摘要

This study proposes a strategy to determine the purity of Ti metal for developing primary standard solutions. The mass fractions of 78 elements in Ti metal were analyzed, and 35 elements were quantified while MDV were obtained for the others by neutron activation analysis, inert gas fusion-based analytical methods, and atomic spectrometry. Additionally, mass fractions of four noble gases and six radioactive nuclides were estimated in the Ti metal. The purity of Ti with the combined standard uncertainty was determined to be 99.939% ± 0.0055%. Measurements of O, Fe, C, N, Ni, H, and Si measurements were the main source of uncertainty in the evaluation of Ti metal purity.