1. National Center of Excellence in Analytical Chemistry; University of Sindh; Jamshoro 76080 Pakistan
2. Dr. M. A. Kazi Institute of Chemistry; University of Sindh; Jamshoro 76080 Pakistan
3. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 PR China
4. Department of Pharmacy; Shaheed Mohtarma Benazir Bhutto Medical University; Larkana
5. Center for Pure and Applied Geology; University of Sindh; Jamshoro 76080 Pakistan
6. Department of Science and Technology, Campus Norrkoping; Linkoping University; SE-60174 Norrkoping Sweden