Heavy metals are contaminants of great environmental concern due to their multiple origins (natural and anthropogenic), the ability to accumulate in organs and tissues, and the deleterious effects they can cause in organisms. Studies on the accumulation of metals in seafood, such as fish, have increased in importance due to the risk for human health when consuming fish contaminated by metals. The present work was aimed at verifying the concentrations of cadmium (Cd), Nickel (Ni) and lead (Pb) in the muscular tissue of Himantura imbricate (from the Persian Gulf in Hormozgan province, Iran. Samples were analyzed by Atomic Absorption Spectroscopy. There were significant variations among heavy metal accumulation levels of the species and their regions. The heavy metal concentrations

After absorption of heavy metals in the tissues of aquatic organisms in aqueous solution accumulate and enter the human body through the food chain and proportional to the concentration of toxic metals absorbed, clinical effects observed. The objective of this study was to evaluate and compare the concentration of heavy metals, lead, nickel, iron and copper in muscle tissue of blue swimming crab Portunus plagicus in three regions (Qeshm, Khamir port and Laft port) was conducted in the Hormozgan Province. Sampling was conducted in summer 2015 and winter 2016. After the captured biometric sample 180, were isolated muscle tissue. The preparation and analysis of samples was performed according to standard methods MOOPAM. The results show that the studied concentration in muscle tissue of blue swimming crab (Portunus pelagicus) at sample locations statistically significant difference shows. Also studied in terms of concentration in the muscle tissue of blue swimming crab in the study area between summer and winter statistically significant difference was observed (P < 0.05). As both in summer and winter concentrations of lead, nickel, iron and copper in muscle tissue of blue swimming crab in Qeshm is greater than the other two regions. Meanwhile, the results of the study compared concentration in muscle tissue showed blue swimming crab with international standards. The studied concentration in muscle tissue of blue swimming crab in Qeshm, Khamir port and Laft port international standards is less than the limit. Which indicates that the health of aquatic ecosystems contamination is not a problem.

Heavy metals from industrial development and release it at a cost, which is resistant against degradation and the amount of fish as a human food chain accumulate. The objective of this study was to evaluate and compare the concentration of heavy metals, lead, nickel, iron, zinc and copper in muscle tissue of blue swimming crab Portunus plagicus in three regions (Qeshm, Khamir port left port) was conducted in the Hormozgan Province. Sampling was conducted in summer and winter 1394. After the captured biometric sample 180, was isolated muscle tissue. The preparation and analysis of samples was performed according to standard methods MOOPAM. Data analysis was performed using (SPSS) software, version 19 to compare of heavy metals ANOVA and Tukey tests were used in the study. The results show that the studied concentration in muscle tissue of blue swimming crab (Portunus pelagicus) at sample locations statistically significant difference shows. Also studied in terms of concentration in the muscle tissue of blue swimming crab in the study area between summer and winter statistically significant difference was observed (p<0/05). As both in summer and winter concentrations of lead, nickel, iron and copper in muscle tissue of blue swimming crab in Qeshm is greater than the other two regions. Meanwhile, the results of the study compared concentration in muscle tissue showed blue swimming crab with international standards. The studied concentration in muscle tissue of blue swimming crab in Qeshm, Khamir port and Laft port international standards is less than the limit. Which indicates that the health of aquatic ecosystems contamination is not a problem?

The present study investigated the heavy metals accumulation (lead, nickel, zinc, iron, and copper) in the muscle of 180 Silver Sillago (S. sihama) from three regions of Hormozgan Province (Qeshm, Khamir Port, and Pol Port) during summer and winter. After biometrics samples were prepared using chemical digestion and the heavy metals (lead, nickel, zinc, iron, and copper) were measured using atomic absorption spectrometry. The results showed that the accumulation of lead, nickel, zinc, iron, and copper in muscle was significantly different in these three regions and also between the two seasons. The highest accumulation was observed in Qeshm in summer and winter. Moreover, the results showed that the accumulation of lead, nickel, zinc, iron, and copper was higher in summer compared to winter (in all three regions). The comparison of heavy metal accumulation in fish muscle with international standards showed that the accumulation of lead, nickel, zinc, copper, and iron were lower than FAO, WHO, and EPA standards. Food risk assessment indicated that there is no danger in the consumption of Sillago sihama with the current bioaccumulation in terms of the presence of lead, nickel, zinc, copper, and iron.

Heavy metals from industrial development and release it at a cost, which is resistant against degradation and the amount of fish as a human food chain accumulate. The objective of this study was to evaluate and compare the concentration of heavy metals, lead, nickel, iron, zinc and copper in muscle tissue of blue swimming crab Portunus plagicus in three regions (Qeshm, Khamir port left port) was conducted in the Hormozgan Province. Sampling was conducted in summer and winter 1394. After the captured biometric sample 180, was isolated muscle tissue. The preparation and analysis of samples was performed according to standard methods MOOPAM. Data analysis was performed using (SPSS) software, version 19 to compare of heavy metals ANOVA and Tukey tests were used in the study. The results show that the studied concentration in muscle tissue of blue swimming crab (Portunus pelagicus) at sample locations statistically significant difference shows. Also studied in terms of concentration in the muscle tissue of blue swimming crab in the study area between summer and winter statistically significant difference was observed (p<0/05). As both in summer and winter concentrations of lead, nickel, iron and copper in muscle tissue of blue swimming crab in Qeshm is greater than the other two regions. Meanwhile, the results of the study compared concentration in muscle tissue showed blue swimming crab with international standards. The studied concentration in muscle tissue of blue swimming crab in Qeshm, Khamir port and Laft port international standards is less than the limit. Which indicates that the health of aquatic ecosystems contamination is not a problem?