Major and trace element assessment of Tietê river sediments, São Paulo, Brazil
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2014
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Journal of Radioanalytical and Nuclear Chemistry
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Resumo
The objective of this study was to quantify
major and trace elements present in sediments collected
from the one of Brazil’s most important rivers, Tieteˆ River.
Sediments from 5 different sampling points (P0–P4), in 3
campaigns (2008/2009), from the headwaters to Suzano
County upstream from Sa˜o Paulo city were collected.
X-ray fluorescence was applied for measuring total concentration of major elements and instrumental neutron
activation analysis (INAA) for trace elements. The elements Cd, Hg and Pb were determined by atomic absorption spectrometry after digestion using the US EPA 3,051
procedure. These metal concentrations were compared to
the PEL and TEL oriented values from CCME. The sampling sites P3 and P4, near industrialized areas, showed the
highest concentrations for potentially bioavailable metals,
mainly Pb and Hg. The results obtained by INAA were
compared to upper continental crust values. A strong
enrichment was found for the elements As, Br, Sb, Th, U
and Zn. These results evidenced contamination by industrial effluents and sewage even relatively close to the Tiete River headwaters. The worst biological effects (acute
toxicity) on benthonic organism Hyalella azteca were also
observed at P3 and P4.
Como referenciar
FAVARO, D.I.T.; ALEGRE, G.F.; BORRELY, S.I.; VUKAN, W.; VIEIRA, A.S.; OLIVEIRA, S.M.B. Major and trace element assessment of Tietê river sediments, São Paulo, Brazil. Journal of Radioanalytical and Nuclear Chemistry, v. 299, n. 1, p. 797-805, 2014. DOI: 10.1007/s10967-013-2702-9. Disponível em: http://repositorio.ipen.br/handle/123456789/8494. Acesso em: 18 Feb 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.