Geochemistry of intertidal sediment pore waters from the industrialized Santos-Cubatão Estuarine System, SE Brazil

Anais da Academia Brasileira de Ciências

Winston F.o. Gonçalves²  Wanilson Luiz-silva²  Wilson Machado¹  Erico C. Nizoli²  Ricardo E. Santelli¹ 

[1] ,Universidade Estadual de Campinas Departamento de Geologia e Recursos Naturais Instituto de GeociênciasCampinas SP ,Brasil

关键词: geochemical anomaly;    industrial contamination;    pore water geochemistry;    anomalia geoquímica;    contaminação industrial;    química de águas intersticiais;   

DOI  :  10.1590/S0001-37652012005000021

来源: SciELO

【 摘 要 】

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-Cubatão 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 SO4(2-)/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.

【 授权许可】

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