Metal Muscle Head Eye Gill Bone Overall mean
Cr BDL 0.32c 0.35b 0.49a 0.35b 0.3
Cd BDL 0.21c 0.33b 0.48a 0.32b 0.27
Pb 0.09c 0.20a 0.20a 0.15b 0.12c 0.15
Cu BDL BDL BDL 0.87a 0.59b 0.29
Zn 0.34d 0.38c 0.38bc 0.51a 0.10b 0.4
Ni BDL 0.02d 0.04d 0.03d BDL 0.02
Data are mean of replicate (2) determinations. BDL: Below instrument detection limit. Letters a, b, c, and d show differences among the different tissues. Data shown with different letters are statistically different at P<0.05 level.
Table 4b: Level of heavy metal in Pentanmius guigarius organs (mg/kg).