Flow injection manifold for matrix removal in inductively coupled plasma mass spectrometry by solid phase extraction: determination of Al, Be, Li and Mg in a uranium matrix

(Note: The full text of this document is currently only available in the PDF Version )

Paul Becotte-Haigh, Julian F. Tyson and Eric Denoyer


Abstract

A flow injection manifold, incorporating two pumps and an 8-port rotary valve, was developed for the automation of a procedure for the removal of the matrix suppression of uranium on light elements. The procedure was based on the selective retention of the uranium on a column of TRU.Spec® resin (a support material impregnated with a liquid ion-exchanger). The light elements were not retained. The uranium was removed by 0.2 mol l–1 ammonium oxalate solution and the column reconditioned by the passage of 25% (v/v) nitric acid. The interference of uranium, 5000 mg l–1, was removed, allowing the determination of aluminium, beryllium, lithium and magnesium at concentrations down to a few µg l–1 in 100 µl of sample. The sample acidity was 20% and the carrier stream was 5% with respect to nitric acid. Although higher acid concentrations could have improved the retention of uranium, the acid concentration was not increased to avoid degradation of the nickel sampling and skimmer cones. A complete analysis cycle took 4 min, including the regeneration of the column.


References

  1. J. A. Olivares and R. S. Houk, Anal. Chem., 1986, 58, 20 CrossRef CAS.
  2. G. R. Gillson, D. J. Douglas, J. E. Fulford, K. W. Hallikan and S. D. Tanner, Anal. Chem., 1988, 60, 1472 CrossRef.
  3. S. D. Tanner, Spectrochim. Acta, Part B, 1992, 47, 809 CrossRef.
  4. S. D. Tanner, in Plasma Source Mass Spectrometry: Developments and Applications, ed. G. Holland and S. D. Tanner, Royal Society of Chemistry, Cambridge, 1997, pp. 13–17 Search PubMed.
  5. E. H. Evans and J. J. Giglio, J. Anal. At. Spectrom., 1993, 8, 1 RSC.
  6. J. R. Bacon, J. S. Crain, A. W. McMahon and J. G. Williams, J. Anal. At. Spectrom., 1997, 12, 407R Search PubMed.
  7. E. H. Evans and J. A. Caruso, Spectrochim. Acta, Part B, 1992, 47, 1001 CrossRef.
  8. J. J. Thompson and R. S. Houk, Appl. Spectrosc., 1987, 41, 801 CAS.
  9. J. D. Fasset and P. J. Paulsen, Anal. Chem., 1989, 61, 643A CrossRef CAS.
  10. D. Beauchemin and J. M. Craig, Spectrochim. Acta, Part B, 1991, 46, 603 CrossRef.
  11. J. W. McLaren, A. P. Myktykiuk, S. N. Willie and S. S. Berman, Anal. Chem., 1985, 57, 2907 CrossRef CAS.
  12. J. F. Tyson, S. G. Offley, N. J. Seare, H. A. B. Kibble and C. Fellows, J. Anal. At. Spectrom., 1992, 7, 315 RSC.
  13. G. E. M. Hall, J. C. Pelchat and J. Loop, J. Anal. At. Spectrom., 1990, 5, 339 RSC.
  14. F. Nakashima, Anal. Chim. Acta, 1964, 30, 167 CrossRef CAS.
  15. C. E. Pietri and A. W. Wenzel, Anal. Chem., 1963, 35, 209 CrossRef CAS.
  16. E. A. Huff, Anal. Chem., 1965, 37, 533 CrossRef CAS.
  17. M. D. Palmieri, J. S. Fritz, J. J. Thompson and R. S. Houk, Anal. Chim. Acta, 1986, 184, 187 CrossRef CAS.
  18. F. Nakashima, Anal. Chim. Acta, 1964, 30, 255 CrossRef CAS.
  19. S. J. Jiang, M. D. Palmieri and R. S. Houk, Anal. Chim. Acta, 1987, 200, 559 CrossRef CAS.
  20. E. P. Horwitz, R. Chiarizia, M. L. Dietz, H. Diamond and D. M. Nelson, Anal. Chim. Acta, 1993, 281, 361 CrossRef CAS.
  21. M. Hollenbach, J. Grohs, S. Mamich, M. Kraft and E. R. Denoyer, J. Anal. At. Spectrom., 1994, 9, 927 RSC.
  22. J. C. Miller and J. N. Miller, Statistics for Analytical Chemistry, Horwood, Chichester, 2nd edn., 1988, p. 175 Search PubMed.
  23. J. F. Tyson, Anal. Chim. Acta, 1986, 179, 131 CrossRef CAS.
  24. F. Pilon, D. Koller and A. Raith, in Plasma Source Mass Spectrometry: Developments and Applications, ed. G. Holland and S. D. Tanner, Royal Society of Chemistry, Cambridge, 1997, pp 44–50 Search PubMed.
Click here to see how this site uses Cookies. View our privacy policy here.