Abstract:
This study was undertaken to evaluate the detection of heavy metals in the fish lead
(pb),cadmium (Cd)and chromium (Cr) in Two Spp of fish (Oreochromis nilotica) Bulti Spp
and (Labeo niloticus ) Dabsa Spp in Nuba lake Wadi Halfa Northern State , as well as to
correlate the detected elements with their respective concentrations with weight and length
of the two fish Spp In Winter .10 samples Orechromis niloticus (Bulti spp) and other 10
samples of Labeo niloticu (Dabsa Spp.) were collected from the Nubian lake in Northern
state in December 2016 in (Winter) and were analyzed to measure the concentrations
(mg/Kg DW) Cadmium (Cd), Chromium (Cr) by atomic absorption spectrometry 210 /
211VG Atomic Absorption Spectrophotometer 3
Sudan Academy of Sciences (SAS),
National Center for research. . The measured concentration of heavy metals in the present
study was in order of, Cd, Cr and Pb The ranges of the measured concentrations Cd (mg/kg)
in the10 samples of Oreochromis niloticus (Bulti Spp) samples were
0.065,0.057,0.035,0.032,0.017,0.056,0.021,0.045,0.062and0.066 for the Cr were
0.115,0.085,0.050,0.055,0.075,0.035,0.175,0.465,0.072and0.055 for Pb were
0.0315,0.130,0.175,0.165,0.160,0.150,0.375,0.485,0.195 and0.235 and for the Lbeo niloticus
was as follows Cd 0.021,0.055,0.0285,0.058, ,0.076, 0.054,0.046,0.049,0.067 and 0.056 for
the( Cr) were 0.260,0.075,0.080,0.095, ,0.065,0.095,0.220,0.072,0.090 and 0.070 and for Pb
were 0.205,0.105, ,0.185,0.550,0.290,0.210,0.205,0.075,0.245and 0.160 which are all less
than the permissible range . The mean concentrations of, Cd, Cr,and Pb observed in the
present study in Bulti were 0.0456,0.1152 and 0.2385 mg/kg respectively and for Dabsa
were 0.0767,0.1122 and 0.2233 respectively Therefore, the study results revealed that the
Nubian lake at Wadi halfa Northern state quality might be considered as not polluted with
the these heavy metal.
