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International Journal of Aquaculture, 2014, Vol.4, No.06
http://ija.sophiapublisher.com
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Figure 1 Fish (St 1 & 5) and water sampling points (St1~5) from the wastewater of the sewage-treatment plant in south of Khartoum State.
3 Results and Discussion
3.1 Concentrations of heavy metals in fish samples
The concentrations of heavy metals (Cd, Cr, Ni, Pb,
Cu, Zn, Fe, and Sr) determined in fish muscle tissues
and gills at the two sampling points are given in Table 1.
The highest concentration of the heavy metal in
muscle tissues and gills of was recorded for Sr,
followed by Fe, Zn, Cu and Pb, where Sr and Fe
recorded higher concentrations in the muscles
compared to the gills of fish samples collected from
both points: the main canal of treated waste-water, and
the discharge area of the treated waste-water into the
White Nile (Figure 2). The same trend was found in
the other heavy metals.