Extração seletiva de metais pesados em sedimentos de fundo do Rio Tietê, São Paulo

Extração seletiva de metais pesados em sedimentos de fundo do Rio Tietê, São Paulo

Alternative title Selective extraction of heavy metals in bottom sediments from Tietê River, São Paulo
Author Bevilacqua, José Eduardo Google Scholar
Silva, Ivone Silveira da Autor UNIFESP Google Scholar
Lichtig, Jaim Google Scholar
Masini, Jorge César Google Scholar
Institution Cia de Tecnologia e Saneamento Ambiental do Estado de São Paulo
Universidade Federal de São Paulo (UNIFESP)
Universidade de São Paulo (USP)
Abstract Sediment samples from Tietê river were submitted to chemical and sequential extractions of heavy metals (Cd, Cr, Cu, Ni, Pb and Zn). It was followed a single extraction by using 0.1 mol L-1 hydrochloric acid and a sequential procedure to evaluate possible chemical associations described as exchangeable, carbonate, reducible oxides, sulfide, organic matter and residual fractions. High concentrations of heavy metals were determined at Pirapora reservoir, which is closer to the Metropolitan Area of São Paulo while for Barra Bonita reservoir, the results showed low concentrations for such elements. Acid volatile sulfides, grain size distribution and carbon contents were also determined.
Keywords heavy metals
sediment
chemical and sequential extractions
Language Portuguese
Sponsor Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Date 2009-01-01
Published in BEVILACQUA, José Eduardo et al . Extração seletiva de metais pesados em sedimentos de fundo do Rio Tietê, São Paulo. Quím. Nova, São Paulo , v. 32, n. 1, p. 26-33, 2009
ISSN 0100-4042 (Sherpa/Romeo, impact factor)
Publisher Sociedade Brasileira de Química
Extent 26-33
Origin http://dx.doi.org/10.1590/S0100-40422009000100005
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000264017800005
SciELO ID S0100-40422009000100005 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/4758

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