Quantitative and Qualitative Determination of Heavy and Toxic Elements in the Fish Grown in Treated Wastewater and Their Comparison with Other Fish

The elements Fe, Cu, Mn, Zn, Cr, Ni, Pb and Cd were determined in the meat and skin of fish by Atomic Absorption Spectroscopy (AAS). The fish were grown in treated wastewater, Zayanderood river, and fisheries of Flavarjan and Babolsar. Arsenic and mercury in the samples were analyzed by Inductively Coupled Plasma Emission Spectroscopy and Cold Vapor AAS, respectively. The concentration of the above mentioned elements in the meat and skin of missable levels, whereas the fish from Zayanderood river generally had higher levels, than the other fish, whereas concentration of Mn, Pb and Ni were higher than their respective permissible amounts. The concentration of Mo and Co in all the fish were below detectable amount. The elements Fe, Cu, Mn and Zn in the treated wastewater are determined quantitatively, whereas the other elements were below the detectable amount.