Abstract
The use of two parallel thermochemical reactions, sulfidization and fluorination, to increase the sensitivity of the spectrographic determination of zirconium in molybdenum was investigated. To determine zirconium quantitatively in amounts of 1x10−4 or more the molybdenum is first converted to the trioxide, and the thermochemical reactions are then used to form volatile zirconium tetrafluoride which evaporates in the arc, leaving the nonvolatile molybdenum sulfide behind.
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References
B.V. Nekrasov, Course in General Chemistry [in Russian], Goskhimizdat, Moscow, 529, 1952.
A.N. Krestovnikov, L.P. Vladimirov, B.S. Gulyanitskii, and A. Ya. Fisher, Reference Book of Equilibrium Calculations for Metallurgical Reactions [in Russian], GNTI, Moscow, 51, 1963.
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In conclusion, the author expresses his gratitude to L.L. Lapchinskaya, N.P. Kotenina, and L.I. Amosova for carrying out the chemical analyses, and to Yu.G. Fomichev and A.A. Kozlov for carrying out the X-ray diffraction analyses. The author also thanks L. G. Safronov for his daily help in carrying out the experimental part of the work.
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Frishberg, A.A. Use of two parallel thermochemical reactions to increase the sensitivity of the spectrographic determination of zirconium in molybdenum. J Appl Spectrosc 5, 8–10 (1966). https://doi.org/10.1007/BF00604641
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DOI: https://doi.org/10.1007/BF00604641