Evaluation of non-essential element and micronutrient concentrations in seafood from the Marmara and Black Seas

Halim Aytekin Ergül, Serdar Aksan

Biology Department, Science and Arts Faculty, Kocaeli University, 41300, Izmit, Kocaeli, TURKEY


Determining the presence of potentially toxic elements in the marine organisms inhabiting contaminated environments is important for human health. The present study assessed concentrations of As, Cd, Co, Cr, Cu, Fe, Hg, Ni, Pb, Se, and Zn measured by ICP-MS in fish muscle and liver, as well as in the edible invertebrate parts harvested from the Marmara and Black Seas. Arsenic in 14 out of 18 fish species (i.e. Mullus barbatus, Mullus surmuletus, Psetta maxima, Solea solea, Sciaena umbra, Auxis thazard, Engraulis encrasicolus, Merlangius merlangus, Diplodus puntazzo, Sardina pilchardus, Scomber scombrus, Trachurus meditaraneus, and Trigla lyra) and 4 invertebrate species (i.e. Mytilus galloprovincialis, Palaemon serratus, Penaeus sp., and Ommastrephes sagittatus) and the Cu concentration in Palaemon serratus were determined to exceed values recommended by the Food and Agriculture Organization and by the Turkish Food Codex. Non-essential elements are accumulated consistently in the fish muscle tissue, however liver represents dietary alterations. When comparing the present results with other studies, As and Se concentrations in the muscle tissue of Marmara sea fish were found higher than previous study results. Also Fe and Hg concentrations in the muscle tissue of Black Sea fish were found higher than previous study results. Other element concentrations were determined generally comparable or lower with some exceptions.

Keywords: Metal, fish, mussel, shrimp, calamari.

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