1. Department of Environmental Sciences Fatima Jinnah Women University Rawalpindi 46000 Pakistan
2. Department of Chemistry Pittsburg State University KS 66762 USA
3. Department of Materials The University of Manchester Oxford Road UK
4. Botany and Microbiology Department College of Science King Saud University P.O. Box 2455 Riyadh 11451 Saudi Arabia
5. Faculty of Science Zarqa University Zarqa 13110 Jordan