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Metals in seston from Cabo Frio Bay, a region under the influence of upwelling in SE–Brazil

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Abstract

This study, performed during 2003–2005 and 2008–2009, investigated metals (Al, Fe, Ba, Zn, Mn, Cr, Cu, Ni, Cd) content in seston at Cabo Frio Bay, SE–Brazil. This study may serve as a baseline of seston metal distribution to guide biogeochemical and ecological models. The seston fractions (> 20 µm, > 64 µm, > 100 µm, and > 150 µm) were sampled in sub-surface horizontal hauls. Metals were determined by ICP-MS. The metals range: Al (62.5–56,867.6 µg g−1), Fe (23.5–25,384.0 µg g−1), Mn (2.7–336.8 µg g−1), Ba (< 0.005–356.3 µg g−1), Zn (0.5–94.2 µg g−1), Cr (0.7–35.5 µg g−1), Cu (4.3–41.7 µg g−1), Ni (< 0.005–19.1 µg g−1) and Cd (< 0.0004–2.4 µg g−1). Aluminium, Fe, Mn, Ba, and Zn showed significant differences (p < 0.05) between the seston fraction. The results obtained in this study suggest that the elements (Fe, Mn, Ba) in the seston were strongly influenced by the abiogenic source. In contrast, Zn, Cd, Cu, Cr, and Ni can be biogenic/anthropogenic sources. The significant positive linear correlation of Zn:P, Cd:P, and Cu:P can indicate an intracellular concentration higher than the external adsorption in the plankton community.

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Acknowledgements

This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brazil (CAPES)—Finance Code 001. This study was supported by the Geochemistry Network from PETROBRAS/Cenpes and the National Petroleum Agency (ANP), Brazil (grant 0050.004388.08.9) within the scope of the Upwelling Project (Projeto Ressurgência). The authors would like to thank CAPES (PDEE 455209-1). The Instituto de Pesquisa da Marinha Almirante Paulo Moreira (IEAPM). Dsc. Eliane Gonzalez-Rodriguez and PhD Sergio de Oliveira Lourenço gave valuable support for the execution of this work. A. Albuquerque, O. Aguilera and E. Silva-Filho are senior researchers for the National Council for Research and Development (CNPq, Brazil).

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VTK: Conceptualization, sampling, and analysis, Writing—original draft, Writing—review & editing. ALSA: Funding acquisition, review & editing. JCM: analysis, review & editing. EVA: review & editing. OA: review & editing. EVSF: Funding acquisition, analysis, review & editing. All authors read and approved the final version of the article.

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Correspondence to Vinicius Tavares Kütter.

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Kütter, V.T., Albuquerque, A.L.S., Moreira, J.C. et al. Metals in seston from Cabo Frio Bay, a region under the influence of upwelling in SE–Brazil. Biometals 36, 49–66 (2023). https://doi.org/10.1007/s10534-022-00457-7

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  • DOI: https://doi.org/10.1007/s10534-022-00457-7

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