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Major, minor, trace and rare earth elements in sediments of the Bijagós archipelago, Guinea-Bissau
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Orientador(es)
Resumo(s)
Sixty sediment samples from four sites in the Bijagós archipelago were characterized for fine fraction, loss on
ignition, major, minor and trace elemental composition (Al, Fe, Ca, Mg, Ti, P, Zr, Mn, Cr, Sr, Ba, B, V, Li, Zn, Ni,
Pb, As, Co, U, Cu, Cs and Cd), and the elements of the La–Lu series. Element concentrations were largely explained
by the Al content and the proportion of fine fraction content, with the exception of Ca and Sr. Sediments
showed enhanced Ti, U, Cr, As and Cd concentrations with respect to estimated upper crust values, most likely
mirroring a regional signature. Rare earth elements were in deficit relatively to the North American Shale
Composite (NASC), mainly in coarser material. No pronounced Ce-anomaly was observed, while Eu-anomalies
were positive in most analyzed sediments.
Descrição
Palavras-chave
Sediments Bijagós – Guinea-Bissau Elemental composition Eu and Ce anomalies
Contexto Educativo
Citação
Marine Pollution Bulletin (2017), http://dx.doi.org/10.1016/j.marpolbul.2017.10.007
Editora
Elsevier