Potential Risk of Some Heavy Metals in Pampus chinensis (Euphrasen) Chinese Silver Pomfret Stromateidae Collected from Karachi Fish Harbour, Pakistan

摘要

Mn, Fe, Co, Cu, Zn and Pb levels were studied in muscle and liver tissues of Pampus chinensis from Karachi Harbour as is the most important fishery area in Pakistan to estimate the potential risk of human consumption. The fish samples were collected monthly from Karachi fishing ports during January-December 2013. Significant differences in metal concentrations were found between different months (P Zn>Cu>Pb in tissues. The liver metal concentrations showed the highest values, whereas the muscle concentrations were the lowest one. The mean (±SE) concentrations of Mn, Fe, Co, Cu, Zn and Pb in the muscles were 0.95±0.08, 29.32±2.04, 0.13±0.02, 2.28±0.12, 4.00±0.20 and 0.36±0.03 mg/kg; dry wt, respectively. The mean (±SE) liver concentrations of Mn, Fe, Co, Cu, Zn and Pb were 3.08±0.27, 414.30±18.07, 0.85±0.06, 32.75±1.67, 43.24±2.61 and 0.77±0.07 mg/kg; dry wt, respectively. None of the metals exceed the threshold limits for fish imposed by European Commission Regulation and other international organizations. This study also demonstrated that estimated daily intakes of selected metals via consumption of fish were below the Permissible Tolerable Daily Intake values established by FAO/WHO.