Spatial and seasonal variations in depth profile of metals in some sediments from Red Sea Islands and the effect of grain size

A sequential technique for extraction of metals from sediments (modified Tessier method) – was used to determine the distribution of the metals Fe, Mn, Pb, Cd, Cu, and Zn in the major sedimentary phases (available, reducible, oxidisable, and residual) in marine sediment samples from six Red Sea Isla...

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Bibliographic Details
Published in:Toxicological and environmental chemistry 2012-07, Vol.94 (6), p.1053-1074
Main Authors: Fawzy, E.M, Ahmed, M.M, Soltan, M.E, Gamal, T.A
Format: Article
Language:English
Subjects:
Cadmium
copper
core sediment
Data analysis
grain size
humans
iron
islands
Landfill
lead
Lead (metal)
manganese
metal distribution
metal pollution
Metals
organic matter
Red Sea
Red Sea Islands
Samples
seasonal variation
Seasons
Sediments
sequential extraction procedure
Statistical analysis
Statistical methods
sulfides
Zinc
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Summary:A sequential technique for extraction of metals from sediments (modified Tessier method) – was used to determine the distribution of the metals Fe, Mn, Pb, Cd, Cu, and Zn in the major sedimentary phases (available, reducible, oxidisable, and residual) in marine sediment samples from six Red Sea Islands. The total metal content was also determined. The oxidizable fraction showed strong association of the metals with organic matter and sulfides. Overall, the total trace metal concentrations in the sediment samples were lower than in previous studies, except for Cd, Pb, and Zn, caused by increasing human activities and landfilling operations on the Red Sea coast. Descriptive data analysis was performed by using statistical method.
ISSN:1029-0486
0277-2248
1029-0486
DOI:10.1080/02772248.2012.691506