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  • Title: Major, minor, trace and rare earth elements in sediments of the Bijagós archipelago, Guinea-Bissau.
    Author: Carvalho L, Figueira P, Monteiro R, Reis AT, Almeida J, Catry T, Lourenço PM, Catry P, Barbosa C, Catry I, Pereira E, Granadeiro JP, Vale C.
    Journal: Mar Pollut Bull; 2018 Apr; 129(2):829-834. PubMed ID: 29079301.
    Abstract:
    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.
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