Study on bioaccumulation of some heavy metals (lead, nickel, zinc, copper, and iron) in the muscle of Silver Sillago Sillago sihama (Forsskål, 1775) in Hormozgan Province

In recent years, anthropogenic and natural activities have caused high levels of metal contamination into the aquatic ecosystem. These pollutants can accumulate in the food chain. The present study examined the amount of metals such as lead ,Nickel, Zink, Copper and Iron in the muscle tissue of Silago Sihama because of their importance in three regions of the Hormozgan province.Sampling was done in three station (Qeshm, Khamir Port and Pol Port) and two seasons, winter and summer. After bioassay, the samples of Silago Sihama were prepared through Chemical digestion method and the amount of metals was measured using atomic absorption device. The results obtained for the concentration of metals (Pb, Ni, Zn, Cu and Fe) in muscle of short fish showed that, there were significant differences between stations (Qeshm, Khamir Port and Pol Port), and also between winter and summer seasons (p<0.05). In both cases in the winter and summer, lead ,Nickel, Zink, Copper and Iron concentrations in Qeshm were significantly higher than Khamir Port and pol Port. Comparison of the metal concentrations in fish muscle tissue shorts with standard values showed that the concentrations of lead, Nickel, Zink, Copper and Iron were lower than FAO, WHO and EPA standards. Food risk assessment of case study specie indicates that the consumption of Silago Sihama with the current consumption rate causes no danger to consumers from the viewpoint of lead, Nickel, Zink, Copper and Iron.