Determination of Uranium Isotopes in Environmental Samples Using Different Analytical Techniques: A Comparison

Document Type : Original Article

Authors

1 Egyptian Atomic Energy Authority (EAEA), Nuclear and Radiation Safety Research Center, Cairo, Egypt

2 Chemistry Department, Faculty of Science (Girl’s branch (, Al-Azhar University, Cairo, Egypt hysical chemistry,

3 Egyptian nuclear and radiological regulatory authority. Nasr City, Cairo, EGYPT.

4 Chemistry Department, Faculty of Science (Girl’s branch (, Al-Azhar University, Cairo, Egypt

5 Egyptian Atomic Energy Authority (EAEA), Nuclear and Radiation Safety Research Center, Cairo, Egypt.

Abstract

Different analytical methods for different environmental samples (rock, soil, sediment, plant, waste water, ground water and tap water) which have low activity concentrations are developed for the determination of uranium isotopes to be assured of no contamination or pollution of the environment. Using of non-destructive method based on gamma spectrometer and destructive analysis based on alpha spectrometer. Choice of an accurate and precise technique to get better performance and quality is essential for the results assessment and improvement. A set of different matrices of IAEA reference certified samples were used for method verification. Two separation techniques for 238U, 234U and 235U were used; i) UTEVA extraction chromatography which achieved recoveries higher than 50 %, ranged between 59 and 79 % and ii) TOPO solvent extraction which achieved a chemical recovery lower than that obtained by UTEVA for the same matrices ranged from 26 % and 55 %. From the obtained results a significance difference were shown between UTEVA and TOPO techniques.

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Egyptian Journal of Chemistry
Volume 65, Issue 132 - Serial Number 13
Special Issue: Chemistry and Global Challenges (Part B)
December 2022
Pages 779-787

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History

  • Receive Date: 05 July 2022
  • Revise Date: 17 October 2022
  • Accept Date: 23 October 2022

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