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Type: Artigo de periódico
Title: Geochemistry of intertidal sediment pore waters from the industrialized Santos-Cubatao Estuarine System, SE Brazil
Author: Goncalves, WFO
Luiz-Silva, W
Machado, W
Nizoli, EC
Santelli, RE
Abstract: The geochemical composition of sediment pore water was investigated in comparison with the composition of sediment particles and surface water in an estuary within one of the most industrialized areas in Latin America (Santos-Cubatao estuarine system, SE Brazil). Pore and surface waters presented anomalously high levels of F-, NH4(+), Fe, Mn and P due to two industrial point sources. In the summer, when SO42-/Cl- ratios suggested an enhanced sulfate reduction, the higher dissolved levels observed in pore waters for some metals (e.g., Cu and Ni) were attributed to reductive dissolution of oxidized phases. Results evidenced that the risks of surface water concentration increase due to diffusion or advection from pore water are probably dependent on coupled influences of tidal pumping and groundwater inputs.
Subject: geochemical anomaly
industrial contamination
pore water geochemistry
Country: Brasil
Editor: Acad Brasileira De Ciencias
Rights: aberto
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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