Determination and comparison of toxic and essential elements concentration in the muscle tissue of Caspian shemaya (Alburnus chalcoides Güldenstädt, 1772) from the Siah Darvishan river, Guilan province, Iran

In this study, concentration of ten elements (As, Fe, Hg, Zn, Pb, Se, Cd, Cu, Mn, Ni) in the edible muscle tissue of 30 Caspian shemaya (Alburnus chalcoides) Caught with cast net in the summer of 2016 from Siah Darvishan river, Guilan province, Iran were investigated by using Varian Atomic absorption spectroscopy. The lowest and highest mean accumulation of elements were observed, as follows: Zinc 26.75 - 30.17, Iron 16.89 - 18.27, Copper 2.76 - 3.25, Manganese 0.98 - 1.15, Selenium 0.75 - 0.78, Lead 0.67 - 0.85, Cadmium 0.27 - 0.29, Arsenic 0.23 - 0.28, Nickel 0.18 - 0.21 and Mercury 0.087 - 0.096 microgram per gram dry weight, respectively. According to the results of this research, mean concentrations of all elements in the muscle tissue of Caspian shemaya, except the four elements; Manganese (1/045 ± 0/096), Arsenic (0/262 ± 0/027), Lead (0/748 ± 0/072) and Cadmium (0/284 ± 0/011) were found to be lower than recommended threshold limit value of FAO/WHO international standard.