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Major, minor, trace and rare earth elements in sediments of the Bijagós archipelago, Guinea-Bissau

Authors :
Teresa Catry
Lina Carvalho
Eduarda Pereira
Paula Figueira
José Pedro Granadeiro
Rui Monteiro
Ana Teresa Reis
Joana C. Almeida
Carlos Vale
Paulo Catry
Castro Barbosa
Inês Catry
Pedro M. Lourenço
Source :
Marine Pollution Bulletin. 129:829-834
Publication Year :
2018
Publisher :
Elsevier BV, 2018.

Abstract

Sixty sediment samples from four sites in the Bijagos 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.

Details

ISSN :
0025326X
Volume :
129
Database :
OpenAIRE
Journal :
Marine Pollution Bulletin
Accession number :
edsair.doi.dedup.....3bdb004ad8231ab2a640e47e9d0b2b29