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

Lina Carvalho; Paula Figueira; Rui Monteiro; Ana Teresa Reis; Joana Almeida; Teresa Catry; Pedro Miguel Lourenço; Paulo Catry; Castro Barbosa; Inês Catry; Eduarda Pereira; José Pedro Granadeiro; Carlos Vale

doi:10.1016/j.marpolbul.2017.10.007

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

Mar Pollut Bull. 2018 Apr;129(2):829-834. doi: 10.1016/j.marpolbul.2017.10.007. Epub 2017 Oct 25.

Authors

Affiliations

¹ Central Laboratory of Analysis (LCA), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
² Central Laboratory of Analysis (LCA), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; CICECO (Aveiro Institute of Materials) and Chemistry Department, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal. Electronic address: paulafigueira@ua.pt.
³ CESAM and Chemistry Department, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
⁴ CESAM and Chemistry Department, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
⁵ CESAM and Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, Portugal.
⁶ MARE - Marine and Environmental Sciences Center, ISPA-Instituto Universitário, Rua Jardim do Tabaco 34, 1149-041 Lisboa, Portugal.
⁷ Instituto da Biodiversidade e das Áreas Protegidas (IBAP), Bissau, Guinea-Bissau.
⁸ Centro de Ecologia Aplicada "Prof. Baeta Neves", InBio - Rede de Investigação em Biodiversidade e Biologia Evolutiva, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal; School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom.
⁹ Central Laboratory of Analysis (LCA), University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; CESAM and Chemistry Department, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
¹⁰ Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.

PMID: 29079301
DOI: 10.1016/j.marpolbul.2017.10.007

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.

Keywords: Bijagós – Guinea-Bissau; Elemental composition; Eu and Ce anomalies; Sediments.

MeSH terms

Environmental Monitoring / methods*
Geologic Sediments / chemistry*
Guinea-Bissau
Metals, Rare Earth / analysis*
Principal Component Analysis
Trace Elements / analysis*

Substances

Metals, Rare Earth
Trace Elements