METAL LEVELS IN COMMON SEAWEEDS FROM SUEZ BAY

Document Type : Original Article

Authors

1 Botany Dept., Fac. Sci., Suez Canal Uni.

2 National Institute of Oceanography and Fisheries

Abstract

Metal levels (Cd, Co, Cr, Cu, Mn, Fe, Pb, Ni and Zn) were determined in water and 24 species of seaweedsat 8 sites on SuezBay close to the industrial and urban zone, from March 1998 through February 1999. The seaweeds of the SuezBay contribute competently for elimination of trace metals from the water. The levels of metal in seawater were between 0.105 ppb for chromium and 20.76 ppb for zinc. In seaweed species, the levels were between 1.93 ppm for chromium and 1528.89 ppm for iron. Many species have high capacity for absorption of certain metals, making them good bioremediators. At the forefront, Cladophoropsis zollingeri (Chlorophyta) accumulated Cr, Fe, and Mn at 70, 112, and 306 times their levels in seawater. For Cd, Co, and Pb, calcareous algae such as Jania rubens, Halimeda tuna, and Galaxaura oblongata are good bioremediators. They accumulated 29, 32, and 34 times the levels measured in seawater.

Keywords

References

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