Metal contamination is one of the crucial global problems in aquatic ecosystems that can be hazardous for public health. Due to the living of the benthic fish like large-scale tongue sole (Cynoglossus arel) on the seafloor, toxicants are more accumulated in their bodies. Therefore, the accumulation of some heavy metals (Cd, Cr, Cu, Fe, Ni, Pb, and Zn) was determined in the edible tissues of this fish species captured from Chabahar Bay located in the northern shores of the Gulf of Oman, as well as in the sediment of their environment. For this purpose, thirty fish samples and sediment from five stations were collected during wet and dry seasons. The preparation of samples was done based on standard procedures, and the concentration of metals was measured by a flame atomic absorption spectrophotometer. Besides conventional statistical analysis, Muller's index (I-geo) for the classification of contamination and the biota-sediment accumulation factor (BSAF) were calculated. Results showed that the sediment of Chabahar Bay was classified as moderately contaminated in terms of Ni (I-geo = 1.271) and Pb (I-geo = 1.019). A significant correlation was found between the levels of Ni (18.1 mu g center dot g(-1)) in sediments and bio-concentration of Cu (4.85 mu g center dot g(-1)), Ni, (0.591 mu g center dot g(-1)) and Pb (1.2 mu g center dot g(-1)) in fish tissues (p < 0.05). In conclusion, Pb content accumulated in fish or sediment was the most important from the health view.
Heavy Metal Concentrations in Cynoglossus arel (Bloch & Schneider, 1801) and Sediment in the Chabahar Bay, Iran
Faggio, Caterina
2021-01-01
Abstract
Metal contamination is one of the crucial global problems in aquatic ecosystems that can be hazardous for public health. Due to the living of the benthic fish like large-scale tongue sole (Cynoglossus arel) on the seafloor, toxicants are more accumulated in their bodies. Therefore, the accumulation of some heavy metals (Cd, Cr, Cu, Fe, Ni, Pb, and Zn) was determined in the edible tissues of this fish species captured from Chabahar Bay located in the northern shores of the Gulf of Oman, as well as in the sediment of their environment. For this purpose, thirty fish samples and sediment from five stations were collected during wet and dry seasons. The preparation of samples was done based on standard procedures, and the concentration of metals was measured by a flame atomic absorption spectrophotometer. Besides conventional statistical analysis, Muller's index (I-geo) for the classification of contamination and the biota-sediment accumulation factor (BSAF) were calculated. Results showed that the sediment of Chabahar Bay was classified as moderately contaminated in terms of Ni (I-geo = 1.271) and Pb (I-geo = 1.019). A significant correlation was found between the levels of Ni (18.1 mu g center dot g(-1)) in sediments and bio-concentration of Cu (4.85 mu g center dot g(-1)), Ni, (0.591 mu g center dot g(-1)) and Pb (1.2 mu g center dot g(-1)) in fish tissues (p < 0.05). In conclusion, Pb content accumulated in fish or sediment was the most important from the health view.Pubblicazioni consigliate
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