Screening of Some Heavy Metal in Fish (Tilapia nilotica) Muscles at Rabak locality, in White Nile Sudan State

Abstract

This paper aims to test and screen the concentration of some heavy metals (Cd, Cu, Zn and Pb) in Tilapia Nilotic fish in Rabak locality at the White Nile State, Sudan. Thirty samples of fish muscle were collected and analyzed by Atomic Absorption Spectrophotometer (AAS) in the National Research Center laborites, Khartoum. The results were revealed average concentrations of heavy metals in all fish samples of Zn, Cu, Pb and Cd 3.305, 0.685, 0.498, 0.075 mg/Kg respectively. The results showed that the lead (pb) was above the local and national standards, whereas, the three others heavy metals (Cd, Cu and Zn) were within the normal range of standards. There were no significant differences between the different investigated metals (P<0.05). In conclusion some trace elements can cause toxicity (Lead, Cadmium) to fish and this leading to public health hazard by consumption of meat fish.