Study of white shrimp ( Metapenaeus‏ ‏Affinis) from Bushehr coastal with the perspective of contamination by ‎heavy metals Fe, Zn, Cu, Mn, and Ni and risk estimation for consumer

Marine ecosystems are contaminated with heavy metals through industrial discharge, agricultural and urban ‎runoff, ‎and municipal waste. Aquatic organisms in such waters, so, are presumably to be contaminated with ‎heavy metals and unsafe for consumption‏.‏‎ This research was done in the coastal regions of Bushehr in 2016‎‏ ‏to ‎determine the heavy metal (Fe, Zn, Cu, Mn, and Ni) concentrations in white shrimp (Metapenaeus‏ ‏Affinis) and ‎their consumption risk. Shrimp samples were collected from several stations of Bushehr coastal regions ‎randomly‏ ‏using the boat and fishing net. the Preparation and analysis of the shrimp samples were done based ‎on the standard methodology‏ ‏and the concentrations of the heavy metals‏ ‏were determined using the flame ‎atomic absorption spectroscopy. Estimation the daily intake and potential risk of heavy metals resulted from ‎shrimp consumption were performed according to the program of the EPA. The concentrations of Fe, Zn, Cu, ‎Mn, and Ni in shrimp muscle were 130.02, 65.61, 35.81, 10.2 and 10.66 mg/kg dry weight respectively. Based on ‎the results, the concentration of Fe, Zn, and Cu were lower than world standards. The Ni concentration was ‎significantly higher than the FDA but lower than other standards. The estimated daily and weekly intakes were ‎observed lower than the reference dose presented by EPA. In the present situation, this shrimp species were ‎found to be safe for consumption and continuous consumption‏ ‏‎(70 years) causes not non-carcinogenic ‎effect.‎