Determination the level of essential heavy metals in muscle of Lethrinus nebulosus in Bushehr seaport

Abstract

The aim of this study was to measureing the amount of essential metals, copper, zinc and iron in muscle of Lethrinus nebulosus in Bushehr seaport in summer 2017. 20 samples of L. nebulosus were randomly caught. After biometry of the samples, the muscle tissues of the samples were separated and chemical digestion of the samples carried out based on MOOPAM procedure, then level of heavy metals were measured by graphite furnace atomic absorption instrument. Based on the obtained results the mean and deviation concentrations of heavy metals of copper, zinc and iron in muscle tissue of L. nebulosus were calculated 5.678±0/726, 17.096±1.452 and 1.498±0.406 mg/kg dry weight respectively. The results revealed that the copper and zinc metals concentration in muscle tissue of L. nebulosus in study station are lower than the levels permitted within the standards of World Health Organization (WHO), Food and Agriculture Organization (FAO), National Health and Medical Research Council (NHMRC) and Ministry of Agriculture, Forestry and Fisheries (MAFF), but the iron level or concentration higher than the standard level of Food and Drug Administration (FDA).