1. Egyptian Atomic Energy Authority Nuclear Research Center Central Laboratory for Elemental and Isotopic Analysis 13759 Cairo Egypt
2. Egyptian Atomic Energy Authority Hot Laboratories Center 13759 Cairo Egypt
3. Egyptian Atomic Energy Authority Nuclear Research Center, Radioisotope Department 13759 Cairo Egypt
4. Ain-shams University Faculty of Science, Chemistry Department 11566 Cairo Egypt
5. University of Saskatchewan Department of Chemistry 110 Science Place S7N 5C9 Saskatoon Saskatchewan Canada