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Nature 173, 1237 (26 June 1954); doi:10.1038/1731237a0

Volumetric Method for the Determination of Zirconium

MULK RAJ VERMA & SUKH DEO PAUL

National Physical Laboratory of India, Hillside Road, New Delhi. Jan. 30.

KUMINS1 observed that mandelic acid separates zirconium quantitatively from a large number of elements, and its use as a specific reagent for zirconium is being extended in analytical practice2–4, in preference to the time-honoured methods of affecting the separation as phosphate or basic selenite5. In a series of papers, Klingenberg and his colleagues6,7 have investigated the possibility of using α-hydroxy carboxylic acids as specific reagents for zirconium determinations and have shown that a direct weighing of p-chloro- and p-bromo-mandelates of zirconium is a satisfactory procedure for the gravimetric determination of the metal. The halo-derivatives of mandelic acid exert a large weighting effect on the zirconium ion and further, unlike the zirconium mandelate, these are not water-soluble. Hahn8 has further explored the use of p-bromo-mandelic acid for the determination of the zirconium – hafnium ratio by a computation from the combined weights of the p-bromo-mandelate of zirconium and hafnium and the weight of the oxides obtained therefrom by ignition. Jonckers9 has studied the reactivity of groups in relation to their application to inorganic analysis.

  1. Kumins, C. A. , Anal. Chem., 19, 376 (1947). | Article | ISI | ChemPort |
  2. Gavioli, G. , and Traldi, E. , La Metallurgia, 42, 179 (1950). | ChemPort |
  3. Mills, E. C. , and Hermon, S. E. , Analyst, 78, 256 (1953). | ISI | ChemPort |
  4. Hahn, R. B. , Anal. Chem., 21, 1579 (1949). | Article | ISI | ChemPort |
  5. Hillebrand, W. F. , and Lundell, C. E. F. , "Applied Inorganic Analysis", 446 et seq. (John Wiley, New York, 1948).
  6. Klingenberg, J. J. , and Oesper, R. E. , Anal. Chem., 21, 1509 (1949). | ISI |
  7. Klingenberg, J. J. , and Papucci, R. A. , Anal. Chem., 24, 1861 (1952). | Article | ISI | ChemPort |
  8. Hahn, R. B. , Anal. Chem., 23, 1259 (1951). | Article | ISI | ChemPort |
  9. Jonckers, M. D. E. , Chim. Anal., 32, 207 (1950). Cf. Chem. Abs., 45, 61 (1951). | ChemPort |
  10. Verma, M. R. , and Paul, S. D. , J. Sci. and Indust. Res., 12, B, 178 (1953).
  11. Verma, M. R. , and Paul, S. D. , J. Sci. and Indust. Res. (in the press).



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