Health risk assessment of some toxic trace metals in captured shrimps from the northern coasts of Oman Sea

Heavy metals contamination is one of the most serious problems around the world and regarding increasing trend of the tendency than seafood consuming in Iran, assurance to the health of this food would be important for consumers. Accordingly, the present study has been done in order to an assessment of some toxic metals concentration in the captured shrimps from the northern coasts of Oman Sea and investigating of their health risk for the eaters. So, 40 samples were prepared at two times from each station (Hormoz, Jask, and Chabahar) and were transported to the laboratory. Preparing of their edible parts and measuring of heavy metals (Cr, Pb, Zn, Cd, and Ni) have been accomplished via wet digestion method and atomic emission spectroscopy (AES), respectively. Results showed that a significant difference between cadmium concentrations of shrimps captured from Jask port (0.08 µg.g-1) with Strait of Hormuz (0.022 µg.g-1) and Chabahar Bay (0.021 µg.g-1) samples has been observed (P<0.05). Also, white Indian shrimp (Fenneropenaeus indicus) had significantly more residuals of cadmium (0.448 µg.g-1) than other species including Jinga (Metapenaeus affinis), kiddi (Parapenaeopsis stylifera), and banana shrimp (F. merguiensis) (P<0.05). According to all of the measured metals were placed in allowable range of WHO and FAO standards, and total THQ for Children (0.258) and adults (0.147) were less than 1, consumers couldn’t be prone through continuous and even daily consumption of the captured shrimps from this area.