1. National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan
2. Department of Pharmacy, Health Services Vocational School, Sivas Cumhuriyet University, Sivas, Turkey
3. Department Math. And Sci. Edu., Sivas Cumhuriyet University, Sivas, Turkey
4. Department of Mathematics and Science Education, Faculty of Education, Sivas Cumhuriyet University, Sivas, Turkey