Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Alkalimetric Titration with Gran Plot in Noncomplexing Media for the Determination of Free Acid in Spent Fuel Solutions

  • Published : 1999.01.20
Download PDF
⟨ Previous Next ⟩

Abstract

Based on the study of hydrolysis behaviour of U(Ⅵ) ion and major fission product metal ions such as Cs(Ⅰ), Ce(Ⅲ), Nd(Ⅲ), Mo(Ⅵ), Ru(Ⅱ), and ZR(Ⅳ) in the titration media, the performance of noncomplexing-alkalimetric titration method for the determination of free acid in the presence of these metal ions was investigated and its results were compared to those from the completing methods. The free acidities could be determined as low as 0.05 meq in uranium solutions in which the molar ratio of U(Ⅵ)/H+ was less than 5, when the end-point of titration was estimated by Gran plot. The biases in the determinations were less than 1% and about +3% respectively for 0.4 meq and 0.05 meq of free acid at the U(Vl)/H+ molar ratio of up to 5. Applicability of this method to the determination of free acid in spent fuel solutions was confirmed by the analysis of nitric acid content in simulated spent fuel solutions and in a real spent fuel solution.

Keywords

References

  1. Metal Ions in Solutions Burgess, J.
  2. Anal. Chem. v.30 Booman, G. L.;Elliott, M. C.;Kimball, R. B.;Cartan, F. O.;Rein, J.E.
  3. Report ORNL-2489 Miller, F. J.;Thomason, P.F.
  4. Report HW-53368 Schneider, R. A.;Rasmussen, M.J.
  5. Report KAPL-1497 Jones, M. E.;Rider, B. F.;Hendrickson, H. C.
  6. Anal. Chem. v.57 Ryan, J. L.;Bryan, G. H.;burt, M.C.;Costanzo, D. A.
  7. Report ORNL-2178 Menis, O.;Manning, D. L.;Goldstein, G.
  8. Report AERE-R9848 Crossley, D.
  9. Report AERE-M3323 Scargill, D.;Waterman, M. J.;Kurucz, A. S.;Hilton, T. E.
  10. J. Radioanal. Nucl. Chem. v.152 Anwar, M.;Mohammad, D.
  11. J. Radioanal. Nucl. Chem. Letters v.176 Sreenivasan, N. L.;Srinivasan, T. G.
  12. J. Radioanal. Nucl. Chem. v.134 Anwar, M.;Mohammad, D.
  13. Anal. Chem. v.36 Motojima, K.;Izawa, K.
  14. Anal. Chem. v.56 Baumann, E. W.;Torrey, B. H.
  15. Report DP-1632 Baumann, E. W.
  16. Report LA-1864 Smit, M. E.
  17. Report IDO-14387 Boman, G. L.;Elliott, M. C.;Kimball, R. B.;Cartan, F. O.;Rein, J.E.
  18. Trans. Am. Nucl. Soc.-USA v.43 Strain, J. E.;Bostick, D. T.;McCue, D. D.;Harper, R. E.
  19. Analyst v.77 Gran, G.
  20. J. Chem. Educ. v.42 Rossotti. F. J. C.;Rossotti. H.
  21. Report NBL-252 Eberle, A. R.;Ierner, M. W.;Goldbeck, C. G.;Rodden, C. J.
  22. Nuclear Chemistry, Theory and Applications Choppin, G. R.;Rydberg, J.
  23. The Hydrolysis of Cations Baes, Jr. C. F.;Mesmer, R. E.
  24. Stability Constants of MetalIon Complexes,Chem. Soc. Sillen, L. G.;martell, A. E.
  25. Handbook of Chemical Equilibria in Analytical Chemistry Kotry, S.;Sucha, L.
  26. J. Radioanal. Chem. v.68 Mayankutty, P. C.;Ravi, S.;Nadkarni, M. N.
  27. The Chemistry of Ruthenium Seddon, E. A.;Seddon, K. R.