Microchimica Acta

, Volume 92, Issue 4–6, pp 195–202 | Cite as

Determination of niobium and tantalum in some ores and special alloys by inductively coupled plasma atomic emission spectrometry

  • Jose Enrique Sanchez Uria
  • Cesar Garcia Ortiz
  • Alberto Menendez Garcia
  • Alfredo Sanz-Medel
Original Papers
Received:
Revised:

Abstract

A fast analytical method for the determination of niobium and tantalum in ores and special alloys by inductively coupled plasma atomic emission spectrometry has been developed. Optimum conditions for the determination of both metals in the plasma were worked out and possible interferences were studied before attempting the determination in the real samples. Ores are dissolved in a mixture of HCl, HF and H3PO4 acids while for the special alloy a HCl+H2O2 mixture is used. The resulting solutions are diluted to the mark with tartaric acid before their final direct nebulization into the plasma. Other elements present did not interfere in the determination of Nb or Ta at concentration levels similar to those found in the analyzed samples. The results obtained determining niobium and tantalum in pyrochlore and special alloys by the proposed procedure are in good agreement with the certified values.

Key words

niobium tantalum plasma emission ICP 
This is a preview of subscription content, log in to check access.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    I. M. Gibalo,Analytical Chemistry of Niobium and Tantalum, Ann Arbor Science Publ., London, 1970.Google Scholar
  2. [2]
    E. B. Sandell, H. Onishi,Chemical Analysis. Traces of Metals: General Aspects, Wiley-Interscience, New York, 1978, Vol. 3, Part I.Google Scholar
  3. [3]
    A. Sanz-Medel, M. E. Diaz Garcia,Analyst 1981,106, 1268.Google Scholar
  4. [4]
    A. Sanz-Medel, J. E. Sanchez Uria, S. Arribas Jimeno,Microchem. J. 1984,30, 334.Google Scholar
  5. [5]
    A. Sanz-Medel, J. I. Garcia Alonso, E. Blanco Gonzalez,Anal. Chem. 1985,57, 1681.Google Scholar
  6. [6]
    C. K. Pilloi, S. Natarajan, Ch. Venkateswarlu,Atom. Spectroscopy 1985,6, 53.Google Scholar
  7. [7]
    R. Nakashima, S. Sasaki, S. Shibata,Anal. Chim. Acta 1974,70, 265.Google Scholar
  8. [8]
    J. Reednick,Analusis 1981,9, 14.Google Scholar
  9. [9]
    V. A. Fassei, R. N. Kniseley,Anal. Chem. 1974,46, 1110 A.Google Scholar
  10. [10]
    A. Sanz-Medel, J. E. Sanchez Uria, S. Arribas Jimeno, M. M. Bonilla Simon,Quim. Anal. 1983,II, 242.Google Scholar
  11. [11]
    K. H. Koch,Radex-Rundschau 1982,1/2, 780.Google Scholar
  12. [12]
    M. Namiki, K. Hirokawa,Bunseki Kagaku 1984,33, T34.Google Scholar
  13. [13]
    O. Kujirai, K. Yamada, M. Kohri, H. Okochi,Appl. Spectrosc. 1986,40, 962.Google Scholar
  14. [14]
    A. Sanz-Medel, C. Camara Rica, J. A. Perez Bustamante,Anal. Chem. 1980,52, 1035.Google Scholar
  15. [15]
    ICP-AES Wavelength Tables,ICP Inform. Newslett. 1985,10, 601.Google Scholar
  16. [16]
    L. Ebdon, M. R. Cave, D. J. Mowthorpe,Anal. Chim. Acta 1980,115, 179.Google Scholar

Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • Jose Enrique Sanchez Uria
    • 1
  • Cesar Garcia Ortiz
    • 1
  • Alberto Menendez Garcia
    • 1
  • Alfredo Sanz-Medel
    • 1
  1. 1.Department of Physical and Analytical Chemistry, Analytical LaboratoryUniversity of OviedoOviedoSpain

Personalised recommendations