Journal of Radioanalytical and Nuclear Chemistry

, Volume 129, Issue 1, pp 113–120 | Cite as

Extraction and spectrophotometric determination of uranium in phosphate fertilizers

  • N. Vučić
  • Z. Ilić
Article

Abstract

An extraction and spectrophotometric method for determination of trace amounts of uranium in phosphate fertilizers is described. It is based on the extraction of uranium with trioctylphosphine oxide in benzene and the spectrophotometric determination of uranium with Arsenazo III in buffer-alcoholic medium. The maximum absorbance occurs at 655 nm with a molar absorptivity of 1.2·104 l·mol−1·cm−1. Beer's law is obeyed over the range 0.6–15.0 μg·ml−1 of uranium(VI). The proposed method has been applied successfully to the analysis of phosphate fertilizers with phosphate concentrations of 45% P2O5.

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References

  1. 1.
    J. A. PEREZ-BUSTAMANTE, F. PALOMARES DELGADO, Analyst, 96 (1971) 407.CrossRefGoogle Scholar
  2. 2.
    T. KOJIMA, Y. SHIGETOMI, H. KOMBA, H. IWASHIRO, T. SAKAMOTO, and A. DOI, Analyst, 107 (1982) 519.CrossRefGoogle Scholar
  3. 3.
    I. BRČIĆ, E. POLLA, M. RADOŠEVIĆ, Analyst, 110 (1985) 1249.CrossRefGoogle Scholar
  4. 4.
    E. J. BOUWER, J. W. MCKLEEN, W. J. MCDOWELL, Health Physics, 34 (1978) 345.PubMedGoogle Scholar
  5. 5.
    J. C. WHITE, W. J. ROSS, AEC Report NAS-NS (1961) 3102.Google Scholar
  6. 6.
    C. A. HORTON, J. C. WHITE, Anal. Chem., 30 (1958) 1779.CrossRefGoogle Scholar
  7. 7.
    J. AZNAREZ, F. PALACIOS, J. C. VIDAL, Analyst, 108 (1983) 1392.CrossRefGoogle Scholar
  8. 8.
    S. B. SAVIN, Talanta, 8 (1961) 673.CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó 1989

Authors and Affiliations

  • N. Vučić
    • 1
  • Z. Ilić
    • 1
  1. 1.Chemical Dynamics LaboratoryThe Boris Kidrič Institute of Nuclear SciencesBeograd(Yugoslavia)

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