eng Ansari Education and Research Society Journal of Ultra Chemistry 0973-3450 2319-8036 August 2009 5 2 141 144 juc 696 article Ibrahim N. Al-Suwiti 1 Department of Zoology, College of Science, King Saud University, P.O.Box 2455, Riyadh 11451 (Saudi Arabia) <p style="text-align: justify;">Data are presented on the level of Glutathione peroxidase (GSH-Px) in the liver of <em>Oreochromis niloticus</em> exposed for 10 weeks to sublethal concentration of cadmium. The fish samples were obtained from Waddi Haniffa Riyadh Saudi Arabia between March and July 2008. specrtophotometric method was used to determine the activities of enzyme. High concentration of cadmium with long exposure time causes low (GSH-Px) activities. (P&gt;0.05). the possibility of detecting environmental pollution by monitoring glutathione peroxidase concentrations or the activity of glutathione peroxidase depend enzymes in fishes is discussed.</p> <p>&nbsp;</p> <p>&nbsp;</p> https://journalofchemistry.org/paper/696/ Cadmium Glutathione peroxidase Orechromis Liver