Ecological Risk Assessment of Metal Pollution along Greater Cairo Sector of the River Nile, Egypt, Using Nile Tilapia, Oreochromis niloticus, as Bioindicator
Table 4
Bioaccumulation factor (BAF) of trace metals (l/kg) in muscle of O. niloticus.
Cu
Zn
Site 1 (G)
Site 2 (M)
Site 3 (I)
Site 4 (K)
Seasonal mean
Site 1 (G)
Site 2 (M)
Site 3 (I)
Site 4 (K)
Seasonal mean
Winter
204.81
365.45
166.25
294.55
257.77
799.06
920.31
891.03
1070.38
920.20
Spring
987.78
372.38
189.57
137.35
421.77
2325.42
1940.00
1562.86
1472.86
1825.28
Summer
150.69
68.44
70.26
108.62
99.50
992.35
846.32
512.00
589.57
735.06
Autumn
393.33
470.00
214.29
197.50
318.78
1637.06
1502.94
1739.23
2596.36
1868.90
Annual mean
434.15
319.07
160.09
184.50
274.45#
1438.47
1302.39
1176.28
1432.29
1337.36#
Mn
Cd
Site 1 (G)
Site 2 (M)
Site 3 (I)
Site 4 (K)
Seasonal mean
Site 1 (G)
Site 2 (M)
Site 3 (I)
Site 4 (K)
Seasonal mean
Winter
78.92
49.09
124.55
48.48
75.26
2.50
26.67
6.00
3.33
9.63
Spring
134.85
25.31
99.60
74.55
83.58
40.00
16.67
16.67
35.00
27.08
Summer
13.33
28.65
32.96
47.39
30.58
50.00
23.33
60.00
90.00
55.83
Autumn
59.60
41.48
155.00
66.30
80.59
12.50
6.67
12.50
6.67
9.58
Annual mean
71.68
36.13
103.03
59.18
67.50#
26.25
18.33
23.79
33.75
25.53#
Pb
Fe
Site 1 (G)
Site 2 (M)
Site 3 (I)
Site 4 (K)
Seasonal mean
Site 1 (G)
Site 2 (M)
Site 3 (I)
Site 4 (K)
Seasonal mean
Winter
5.56
40.77
2.31
27.69
19.08
40.89
69.87
114.33
197.71
105.70
Spring
60.00
69.00
10.00
7.20
36.55
356.34
96.24
216.24
90.27
189.77
Summer
33.33
17.67
6.80
18.46
19.07
56.55
92.81
40.47
61.46
62.82
Autumn
18.46
30.71
25.56
13.64
22.09
161.33
123.16
233.98
236.78
188.81
Annual mean
29.34
39.54
11.17
16.75
24.20#
153.78
95.52
151.26
146.55
136.78#
G, Giza; M, Manyal; I, Imbaba; and K, Kanater. #The mean of all measurements for each metal.
