The study investigated the concentration of Lead, Cadmium, Nickels and
Chromium in sediment and seagrass tissues at six selected sites along the
Sudanese Red Sea coast. The findings of the study added some important and
necessary information about the status and condition of the coastal environment
in the Sudanese Red Sea coast in terms of the extent of pollution with heavy
metals. The study sites included: Marsa Bashayer, Marsa Dama Dama, Green Area,
Shipyard, Marsa Halout and Dungonab Bay. The Atomic Absorption Spectrophotometer
was used to measure Lead, Cadmium and Nickels. The colorimetric detection
method was used for Chromium using the Spectrophotometer. Marsa Dama Dama site
revealed high levels concentration of heavy metals in sediment for Lead (60.5)
μg/g, Cadmium (0.22) μg/g and Chromium (146.65) μg/g. Marsa Halout showed the
highest mean concentration of Nickel in sediment at 14 μg/g. The variation of
concentration of metals in sediment between the sites was not significant. The
mean concentration of metals in seagrass species tissues ranged from 3.9 to
26.25 μg/g for Lead, 0.1 to 0.90 μg/g for Cadmium, 0.38 to 5.96 μg/g for Nickel
and 0.15 to 0.495 μg/g for Chromium. The differences of concentration of heavy
metals in seagrass tissues among the sites were significant for Lead and not
significant for Cadmium; Nickel and Chromium.
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