Journal of Radioanalytical and Nuclear Chemistry

, Volume 322, Issue 2, pp 347–359 | Cite as

Effect of different concentrations of sulfuric acid on leaching of radionuclide isotopes in sedimentary rock samples, Sinai, Egypt

  • A. NadaEmail author
  • N. Imam
  • Ibrahim E. El Aassy
  • A. Ghanem


This research focused on studying the effect of sulfuric acid concentrations on the leaching of different radionuclides (238U and 235U series) in two samples (high- and low-grade). The activity concentrations of radionuclides in the uranium series (238U and 235U) were measured by an HPGe detector. The leaching efficiency of 238U and 235U series was different in the samples and the leaching percent of 230Th was the highest in the samples, which may be due to the presence of the organic matter. There are radioactive disequilibria between 238U, 234U and 230Th in leachate and residual phase due to redistribution between acid-soluble and acid-resistant phases.


Sedimentary rocks HPGe detector Radionuclides Sulfuric acid Leaching efficiency 



We appreciate the members of Nuclear Physics Laboratory (1), Physics Department, Faculty of Women for Art, Science and Education, Ain Shams University. Also, we thank the National Institute of Oceanography and Fisheries. We would like to thank Dr. Mostafa Darwish, Egyptian Nuclear and Radiological Regulatory Authority.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • A. Nada
    • 1
    Email author
  • N. Imam
    • 2
  • Ibrahim E. El Aassy
    • 3
  • A. Ghanem
    • 1
  1. 1.Faculty of Women for Arts, Science, and EducationAin Shams UniversityCairoEgypt
  2. 2.National Institute of Oceanography and FisheriesCairoEgypt
  3. 3.Nuclear Materials AuthorityCairoEgypt

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