Heavy Metal Concentrations in Padina gymnospora and Padina tetrastromatica Dictyotaceae, Ochrophyta,) and Sediments of BushehrCoastline (Bushehr Province, Iran)

In the present study, in order to investigate and compare the absorption of heavy metals (nickel, cadmium, lead, and copper) in two algae species, Padina gymnospora Kuetzing Vickers and Padina tetrastromatica Hauck, and in the adjacent sediments along the Bushehr coasts, four sites namely Helilla, Lian, Raphael (burned ship) and Naftkesh were selected for sampling. The sediment and algae sampling was carried out during summer and winter of 2016. After digestion and preparation of samples, an atomic absorption instrument was used to measure the concentration of heavy metals. The mean concentration of Nickel, Cadmium, Lead, and Copper in two samples was measured about 8.91, 1.2, 3.47 and 0.31 μg.g-1 in P. gymnospora, 8.72, 1.15, 3.33 and 0.28 μg.g-1 in P. tetrastromatica and 7.93, 1.61, 2.83 and 0.18 μg.g-1 in studied sediments, respectively. The absorption rate of investigated species and sediments were nickel >copper >lead >cadmium.