Distribution and enrichment of trace metals in marine sediments from the Eastern Equatorial Atlantic, off the coast of Ghana in the Gulf of Guinea

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Mahu, E., Nyarko, E., Hulme, S., & Coale, K. H. (2015). Distribution and enrichment of trace metals in marine sediments from the Eastern Equatorial Atlantic, off the coast of Ghana in the Gulf of Guinea. Marine Pollution Bulletin. doi:http://dx.doi.org/10.1016/j.marpolbul.2015.06.044
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TitleDistribution and enrichment of trace metals in marine sediments from the Eastern Equatorial Atlantic, off the coast of Ghana in the Gulf of Guinea
AuthorsE. Mahu, E. Nyarko, S. Hulme, K. Coale
AbstractWe present results of a preliminary geochemical assessment of Cd, Pb, V, As, Ni, Cu, Zn, Mg, Al, K, Ca, and Fe in marine sediments from the Eastern Equatorial Atlantic, off the Coast of Ghana. Samples were taken along 4 regions G1, G2, G3 and G4 at approximately 25 m, 100 m, and 250 m, 500 m and 1000 m depths. Elemental compositions were assessed through the estimation of Al-normalized enrichment factors and geochemical accumulation indices, and the concentrations determined to produce any potential toxic effects to biota. Significant enrichment of the bottom sediments with Cd, Ni and As were observed at some locations with sediments showing signs of heavy pollution with As at region 4. Apart from Ni, V and As which were beyond threshold levels at most regions, all other metals were below probable effect levels. Both natural and anthropogenic processes controlled trace metal accumulation and distribution in the Ghanian coastal environment.
JournalMarine Pollution Bulletin
Date2015
ISSN0025-326X
SubjectsTrace metals, enrichment, sediments, Ghana, Eastern Equatorial Atlantic
NoteRocks and Cores, Oceanography, In press

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