1. Université de Rennes 1, UMR CNRS 6226; 263 av. du général leclerc 35042 Rennes Cedex France
2. Biomaterials Department; National Research Centre NRC; Cairo Egypt
3. Chemical Engineering Department; National Research Centre; Al Bohooth St. Dokki Egypt
4. Chemistry Department; American University in Cairo; New Cairo Egypt
5. University of Maryland; Baltimore County Maryland, US
6. Physics Department Girls Branch Faculty of Science; Al-Azhar University; Cairo Egypt
7. Water Pollution Research Department; National Research Centre; Cairo Egypt