1. Department of Chemistry, College of Science University of Hafr Al Batin P.O.Box 1803, Hafr Al Batin, 31991 Saudi Arabia
2. Department of Chemical Engineering College of Engineering University of Hafr Al Batin P.O.Box 1803 Hafr Al Batin 31991 Saudi Arabia
3. Department of Physics, College of Science University of Hafr Al Batin P.O.Box 1803, Hafr Al Batin, 31991 Saudi Arabia