1. Department of Chemistry, Modibbo Adama University, Yola, Nigeria
2. Department of Science Laboratory Technology, Modibbo Adama University, Yola, Nigeria
3. Department of Chemical Engineering, Modibbo Adama University, Yola, Nigeria
4. Department of Chemistry, Federal University Wukari, Taraba State, Nigeria
5. Department of Chemistry, Federal College of Education, Yola, Nigeria