1. Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City 11884, Egypt
2. Senior researcher chemist, Greater Cairo Water Company, Cairo 11047, Egypt
3. Research Laboratory, Cairo Oil Refining Company, Mostorod 11757, Kaliobia, Egypt
4. Department of Green Chemistry, National Research Centre, Cairo 12622, Egypt
5. Biochemistry Department, Biotechnology Research Institute, National Research Centre, Dokki, 12622 Giza, Egypt
6. Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway