Distribution and levels of trace metals in the Red sea coasts and comparison with their levels in the Arabian Gulf.

Saeed, M.A.R.; Al-Imarah, F.J.M.; Al-Saad, H.T.

	Distribution and levels of trace metals in the Red sea coasts and comparison with their levels in the Arabian Gulf.
Mesopotamian Journal of Marine Science
Article 1, Volume 22, Issue 1, 2007, Pages 1-16 PDF (0 K)
Authors
M.A.R. Saeed; F.J.M. Al-Imarah; H.T. Al-Saad
Abstract
The marine environment of Seas is suffered from pollution by trace metals as well as petroleum hydrocarbons from different sources. Different studies were conducted to evaluate the levels of trace metals, Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn in water, sediments, plants, fishes and shrimps from Red Sea and Arabian Gulf coasts. Most of these studies revealed that levels of trace metals were acceptable when compared with world wide standards and comparable to those for unpolluted environments. Higher concentrations of trace metals in the environmental media or biota were observed close to the coastal cities due to anthropogenic activities, while lower values were reported for remote areas. Dissolved trace metals in µ g/l reported were: 0.19,0.04-2.65, 0.02 (Cd), 0.21, 0.024-29.05, ND (Cr), 0.47, 5.32-174, 7.0 (Cu), 173, 3.48- 206.50, 40 (Fe), 1.52, 0.12-8.05, 7.00 (Mn), 2.85, 0.12- 22.43, 1.66 (Ni), 0.23, 0.10-2.85, 3.00 (Pb) and 0.82, 0.0-9.45, 20 (Zn) in coastal waters of Arabian Gulf, Red Sea and World wide. Exceptions were reported for certain studies such as recording of high concentration of mercury in the edible flesh of the fish Hammrah from North West Arabian Gulf waters which explained on the basis of natural sources. Elevated levels of lead from automobile emission were reported in bottom surface sediments nearby Kuwaiti coasts.

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