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.
