1. Faculty of Sciences, Physics Department, Damascus University, Damascus, Syria;
2. Faculty of Pharmacy, Department of Basic and Supporting Sciences, Arab International University, Daraa, Syria;
3. Faculty of Sciences, Department of Animal Biology, Damascus University, Damascus, Syria;
4. Institute of Technical Chemistry, Leibniz University Hannover, Hannover, Germany;
5. Faculty of Sciences, Chemistry Department, Damascus University, Damascus, Syria