Determination of Molybdenum in Nickel-Base Heat-Resisting Alloys by Isotope Dilution Mass Spectrometry

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概要

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• Molybdenum contents of 3 to 9 wt percents in several analytical standad materials, mainly nickel-base heat-resisting alloys(JAERI and NBS), were determined by isotope dilution mass spectrometry. The technique involved acids-digestion of a chipped sample and addition of a 96 atomic percent Mo-96 spike solution into aliquoted sample solutions prior to isotope analysis. A carbonization technique was applied in single filament surface ionization mass spectrometry in order to make molybdenum isotop ratio measurements simple and reproducible. Except for the samples containing niobium and/or zirconium, the method was capable of obtaining molybdenum contents with relative standard deviations of 0.5 to 1 percent, without separation of element from the matrix. the samples contained niobium and/or zirconium, it is preferable to separate them by precipitation of molybdenum with α-benzoinoxime in order to shorten the overall analysis time.

• 日本質量分析学会の論文

著者

• Tamura Shuzo

  Analytical Chemistry Laboratory, Japan Atomic Eenergy Research Institute

関連論文

• Determination of Molybdenum in Nickel-Base Heat-Resisting Alloys by Isotope Dilution Mass Spectrometry

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