Major, minor, trace and rare earth elements in sediments of the Bijagós archipelago, Guinea-Bissau. Issue 2 (April 2018)

• Record Type: Journal Article
• Authors: Carvalho, Lina; Figueira, Paula; Monteiro, Rui; Reis, Ana Teresa; Almeida, Joana; Catry, Teresa; Lourenço, Pedro Miguel; Catry, Paulo; Barbosa, Castro; Catry, Inês; Pereira, Eduarda; Granadeiro, José Pedro; Vale, Carlos
• Is Part Of: Marine pollution bulletin. Volume 129:Issue 2(2018)
• Page Start: 829
• Page End: 834
• Publication Date: 2018-04
• Subjects: Sediments -- Bijagós – Guinea-Bissau -- Elemental composition -- Eu and Ce anomalies; Marine pollution -- Periodicals; Marine Biology -- Periodicals; Water Pollution -- Periodicals; Mer -- Pollution -- Périodiques; Publications périodiques; Pollution des mers; Lutte antipollution; Electronic journals; 363.7394
• DOI: 10.1016/j.marpolbul.2017.10.007
• Languages: English
• ISSNs: 0025-326X

Abstract

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. Highlights: Sediment samples from four sites in the Bijagós archipelago are characterized. Major, minor, trace element concentrations are explained by Al content. Ti, U, Cr, As and Cd are enhanced relatively to the upper earth crust. Rare earth elements are lower than NASC chiefly in coarser sediments. Ce-anomalies are absent and Eu-anomalies are positive in most sediments.