Journal of Nuclear Science, Engineering and Technology (JONSAT)
In cooperation with the Iranian Nuclear Society

The Study of Ionic Strength Effect on Stability Constant of Dioxouranium(VI) Complexes with Asparagine

Document Type : Research Paper

Authors

M Amiri
M Rabbani
F Gharib
M Tahernejad Javazm
Abstract
In this study, the stability constant of dioxouranium with asparagine complexes and protonation constant of asparagine at different ionic strength was investigated. Measurements have been performed at 25°C, pH<3.5 and at ionic strengths ranging from 0.1 to 1.0 mol dm-3 sodium perchlorate, using combination of potentiometric and spectrophotometric techniques. The composition of the formed complexes and their stability constants were determined by cruve fitting method and it was shown that dioxouranium forms two mononuclear 1:1 and 1:2 species in the form of UO2(HL)2+ and UO2(HL)22+. The overall analysis of the present and the previous data dealing with the determination of stability constant at different ionic strength allowed us to obtain a general equation by which the formation constant determined at a fixed ionic strength can be calculated with a good approximation.
 

Highlights

  1. 1.    U. Casellato, P.A. Vigato, M. Vidali, “Actinide complexes with carboxylic acid Coord,” Chem.Rev. 26-85 (1987).

 

  1. 2.    I. Grenhe, J. Fuger, R.J.M. Konings, R.J. Lemire, A.B. Muller, H. Wanner, “Chemical Thermodynamics of Uranium,” Elsevier Science Publishers (1992).

 

  1. 3.    A.L. Lehninger, “Biochemistry worth publishers inc,” New York (1975).

 

  1. 4.    M.T. Beck and I. Nagypal, “Chemistry of complex equilibria,” Halsted Press, New York (1990).

 

  1. 5.    L.E. Orgel, “An introduction to transition metal chemistry,” John Wiley, NewYork (1960).

 

  1. 6.    D. Langmuir, “Aqueous environmental geochemistry,” Prentice Hall, Upper Saddle River (1997).

 

  1. 7.    V.M. Lobo, “Handbook of electrolyte solutions,” Elsevier, Amsterdam (1989).

 

  1. 8.    W. Stumm and J.J. Morgan, “Aquatic Chemistry: Chemical Equilibria and Rates in Natural Waters,” (1995).

 

  1. 9.    R.J. Motekaitis and A.E. Maratell, “The determination and use of stability constant,” Weinheim, New York (1992).

 

  1. 10.              P.W. Atkin and A.K. Holker, “Ions in solutions,” Clarendo Press, Oxford, 86-90 (1972).

 

  1. 11.              P.G. Daniele, C. Rigano, S. Sammartano, “Talanta,” 32,1 (1985).

 

  1. 12.              R.C. Tewariand and M.N. Srivastava, “Talanta,” (1973).

 

  1. 13.              “Talanta,” Vol. 20, pp.360-361, pergamon Press (1973).

 

  1. 14.              F. Gharib, K. Zare, R. Cheraghali, “Russ. J. Inorg. Chem. 49, 6 (2004).

 

  1. 15.              F. Crea, A. De Robertis, S. Sammartano, Ann Chim, 93(12): 1027-35 (2003).

 

  1. 16.              H.L. Girdhar, Shamar Parveen, M.K. Puri, “Department of chemistry,” The university of Kashmir, Srinagar (1976).

 

  1. 17.              A. Raghavan and M. Santappa, Curr. Sci. 39, 302 (1970).

Keywords

Stability Constant
Ionic Strength
Dioxouranium (VI)
Asparagine
Spectrophotometry Potentiometry
  1. 1.    U. Casellato, P.A. Vigato, M. Vidali, “Actinide complexes with carboxylic acid Coord,” Chem.Rev. 26-85 (1987).

 

  1. 2.    I. Grenhe, J. Fuger, R.J.M. Konings, R.J. Lemire, A.B. Muller, H. Wanner, “Chemical Thermodynamics of Uranium,” Elsevier Science Publishers (1992).

 

  1. 3.    A.L. Lehninger, “Biochemistry worth publishers inc,” New York (1975).

 

  1. 4.    M.T. Beck and I. Nagypal, “Chemistry of complex equilibria,” Halsted Press, New York (1990).

 

  1. 5.    L.E. Orgel, “An introduction to transition metal chemistry,” John Wiley, NewYork (1960).

 

  1. 6.    D. Langmuir, “Aqueous environmental geochemistry,” Prentice Hall, Upper Saddle River (1997).

 

  1. 7.    V.M. Lobo, “Handbook of electrolyte solutions,” Elsevier, Amsterdam (1989).

 

  1. 8.    W. Stumm and J.J. Morgan, “Aquatic Chemistry: Chemical Equilibria and Rates in Natural Waters,” (1995).

 

  1. 9.    R.J. Motekaitis and A.E. Maratell, “The determination and use of stability constant,” Weinheim, New York (1992).

 

  1. 10.              P.W. Atkin and A.K. Holker, “Ions in solutions,” Clarendo Press, Oxford, 86-90 (1972).

 

  1. 11.              P.G. Daniele, C. Rigano, S. Sammartano, “Talanta,” 32,1 (1985).

 

  1. 12.              R.C. Tewariand and M.N. Srivastava, “Talanta,” (1973).

 

  1. 13.              “Talanta,” Vol. 20, pp.360-361, pergamon Press (1973).

 

  1. 14.              F. Gharib, K. Zare, R. Cheraghali, “Russ. J. Inorg. Chem. 49, 6 (2004).

 

  1. 15.              F. Crea, A. De Robertis, S. Sammartano, Ann Chim, 93(12): 1027-35 (2003).

 

  1. 16.              H.L. Girdhar, Shamar Parveen, M.K. Puri, “Department of chemistry,” The university of Kashmir, Srinagar (1976).

 

  1. 17.              A. Raghavan and M. Santappa, Curr. Sci. 39, 302 (1970).

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