The Use of Green Algae (Entromorpha intestinalis) as Biomonitor Index of Heavy Metals (Ni,Pb,Cd and Cu) in Coastal Water of Bushehr

The study was carried out to evaluate the use of green algae as biomonitor in Hormuzgan province. The status of heavy metals selected (Cd، Ni، Pb and Cu) was determined in sediment and dominant seaweed species (Entromorpha). Sampling of seaweed and sediment were conducted from April 2008 to August 2008. Seaweed and sediment samples were collected from intertidal regions at five sites along the Bandar Bushehr coasts. Algae sample was washed at the field. Samples powdered ofsediment and seaweed digested and analyzed according to ROPME method by using an Atomic Absorption Spectrophotometer (A. A. S، Unicam Model، 919). However، mean metal concentrations of Cu، Pb، Cd، and Ni showed 3. 46، 4. 35، 2. 68 and 0. 68 μg. g-1 dry weight، respectively. Metals concentration in algae was decreased as follow: Pb>Cu>Ni>Cd. During this study، metals level in sediments were decreased as follow: Cu>Pb>Ni>Cd and mean metal concentrations in sediment showed 23. 37، 22. 89، 20. 2 and 0. 64 μg. g-1 dry weight to Cu، Pb، Ni and Cd، respectively. However، maximum metal concentration was belonged to copper.