Reactive sulfides relationship with metals in sediments from an eutrophicated estuary in Southeast Brazil

Marine Pollution Bulletin
W MachadoJ E L Maddock

Abstract

The potential association of acid-volatile sulfides (AVS) and reactive (HCl soluble) Fe with the distribution of reactive trace metals (Cu, Cd, Ni, Pb and Zn) was investigated in sediment cores collected in the Iguaçu river estuarine system (Guanabara bay, Brazil), within the river (core R) and the bay (core B) areas. Moderate to extremely high AVS concentrations (33-314 micromol g(-1)) were found in the rapidly-accumulated sediments of this eutrophicated estuary. AVS showed significant correlations with Fe, Ni and Pb in core B, whereas no correlation between AVS and metals was observed in core R. Results suggest that the AVS:Fe molar ratio may often reflect the diagenetic conditions controlling the distribution of Cd and Cu in core B better than AVS and Fe levels themselves. A shift in the biogeochemical controls of metal distribution from the river to the open bay sediments is suggested, with a greater association of most metals with AVS and Fe in bay sediments.

References

Jan 14, 2003·Marine Pollution Bulletin·W MachadoL D Lacerda

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Citations

Oct 4, 2011·Environmental Geochemistry and Health·Erico Casare Nizoli, Wanilson Luiz-Silva
Mar 20, 2016·Marine Pollution Bulletin·Janine M M ChiappettaJosane A Lessa
May 24, 2015·Environmental Science and Pollution Research International·Yan HeChangsheng Guo
Mar 26, 2013·Marine Environmental Research·Jeamylle NilinLetícia Veras Costa-Lotufo
Dec 23, 2014·Marine Pollution Bulletin·Eduardo S CostaRenato Rodrigues Neto
May 24, 2016·Marine Pollution Bulletin·Ilene Matanó AbreuRicardo Erthal Santelli
Aug 2, 2016·Ecotoxicology and Environmental Safety·Valquiria Maria de Carvalho AguiarVitor Calôr de Oliveira
Mar 11, 2006·Environment International·B DalmacijaI Teodorovic
Oct 13, 2018·Environmental Science and Pollution Research International·Christiane MonteWilson Machado
Jan 5, 2021·Bulletin of Environmental Contamination and Toxicology·Ana C F CruzDenis M S Abessa
Jun 16, 2011·Environmental Science & Technology·Kei TodaShin-Ichi Ohira

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