Organ Site Heavy metals concentrations (ppm)
Cu BAF Ni BAF Pb BAF Cd BAF
Gills SI
SII
5.2
3.05
20
7.44
8.65
7.45
4.78
3.92
11.85
10.45
4.51
4.03
0.35
0.35
0.34
2.69
Muscles SI
SII
1.85
3.15
7.12
7.68
5.2
6.4
2.87
3.37
7.7
8
2.93
3.09
1
0.35
0.96
2.69
Liver SI
SII
46.1
68.05
177.31
165.98
8.4
7.7
4.64
4.05
7.2
11.3
2.74
4.36
0.45
0.05
0.43
0.38
Gonads SI
SII
17.4
0
66.92
0
7.7
5
4.25
2.63
7.25
6.35
2.76
2.45
0.8
0.95
0.77
7.31
Permissible level   30 mg/kg 0.4 mg/kg 2  mg/kg 2  mg/kg
Site I: before El-sail drain disposal point. Site II: after El-sail drain disposal point. BAF: bioaccumulation factor.
Table 2: Heavy metals concentrations and bioaccumulation factor in different organs of Oreochromis niloticus from the both studied sites.
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