1. Eskişehir Technical University, Engineering Faculty, Department of Environmental Engineering, Eskişehir, 26555, Turkey
2. Radiation Protection Institute (RPI) – Ghana Atomic Energy Commission (GAEC), Accra, Ghana
3. Department of Physics and Astronomy, University of Florence, I.N.F.N., Florence, Via G. Sansone 1, I-50019 Sesto F.no, Florence, Italy
4. Bolu Abant Izzet Baysal University, Engineering Faculty, Department of Environmental Engineering, Bolu, Turkey