Effect of some metal ions on the complexation of strontium with humic acid

  • A. A. Helal
  • H. F. Aly
  • D. M. Imam
  • S. M. Khalifa


The formation of Sr-humate precipitate was studied colourimetrically and radiometrically at different pH's. It was found that, increasing of the Sr2+ concentration or the pH value of the solution increases the precipitated complex. The competition effect of Mg2+, Ca2+, Ni2+, and Ba2+ on the complexation of Sr2+ by humic acid indicated that both Mg2+ and Ni2+ substitute Sr2+ in humate complex, while Ba2+ has a very little effect. In case of Ca2+, increasing of its concentration enhances the precipitation of Sr2+ with humic acid.


Precipitation Physical Chemistry Inorganic Chemistry Strontium Humic Acid 
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Copyright information

© Akadémiai Kiadó 1998

Authors and Affiliations

  • A. A. Helal
    • 1
  • H. F. Aly
    • 1
  • D. M. Imam
    • 1
  • S. M. Khalifa
    • 1
  1. 1.Atomic Energy AuthorityHot Laboratory CentreCairoEgypt

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