Table 2 Heavy metal concentrations in the muscle tissue of Oreochromis niloticus in mg/kg muscle weight collected from El Rayah ElTawfeeky canal and Damietta branch, Egypt

74.533 ± 0.075^*a

2.527

0.553

59.146 ± 0.980^*

2.005

0.439

2.286 ± 0.115^*a

4.651

1.019

0.270 ± 0.053^*

0.549

0.120

10.360 ± 0.075^*a

3.512

0.7696

1.500 ± 0.030^*

0.508

0.111

63.020 ± 0.346^*a

0.051

0.011

38.853 ± 0.449^*

0.031

0.006

54.406 ± 0.116^*a

0.790

0.173

38.986 ± 0.991^*

0.566

0.124

23.560 ± 0.019^*a

3.993

0.875

20.823 ± 0.106^*

3.530

0.773

33.403 ± 2.068^*a

2.718

0.595

14.673 ± 0.723^*

1.193

0.261

212.086 ± 4.328^*a

2.016

0.441

99.930 ± 0.370^*

0.949

0.208