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Distribution and enrichment of trace metals in marine sediments from the Eastern Equatorial Atlantic, off the Coast of Ghana in the Gulf of Guinea.
Mahu, Edem; Nyarko, Elvis; Hulme, Samuel; Coale, Kenneth H.
Afiliação
  • Mahu E; University of Ghana, Ghana; Moss Landing Marine Laboratories, CA, United States. Electronic address: edemmahu@gmail.com.
  • Nyarko E; University of Ghana, Ghana.
  • Hulme S; Moss Landing Marine Laboratories, CA, United States.
  • Coale KH; Moss Landing Marine Laboratories, CA, United States.
Mar Pollut Bull ; 98(1-2): 301-7, 2015 Sep 15.
Article em En | MEDLINE | ID: mdl-26139460
ABSTRACT
We 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 25m, 100m, and 250m, 500m and 1000m 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 G4. Apart from Ni, V and As which were beyond threshold effects 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 Ghanaian coastal environment.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Sedimentos Geológicos / Metais País/Região como assunto: Africa Idioma: En Revista: Mar Pollut Bull Ano de publicação: 2015 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Sedimentos Geológicos / Metais País/Região como assunto: Africa Idioma: En Revista: Mar Pollut Bull Ano de publicação: 2015 Tipo de documento: Article