Heavy metal Mean concentration in tilapia samples (ppb) §Concentration of heavy metal consumed in ppb /Kg/day EPA Chronic Oral RfD (ppb/day)
Arsenic 2.88 1.33 3.0
Lead 1.16 0.53 None set
Cadmium 10.89 5.06 10.0
Mercury 17.48 8.13 1.0
§Concentration of heavy metal consumed in ppb/Kg/day calculated based on a diet of 8 ounce seafood in a day.
Table 3: Mean concentration, concentrations of heavy metal consumed in one day, and EPA chronic oral RfD.