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Trace Metal Fractionation by the Sequential Extraction Method in Sediments from the Lis River (Portugal)

Title
Trace Metal Fractionation by the Sequential Extraction Method in Sediments from the Lis River (Portugal)
Type
Article in International Scientific Journal
Year
2009
Authors
Cidália M. S. Botelho
(Author)
FEUP
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Rui A. R. Boaventura
(Author)
FEUP
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Judite S. Vieira
(Author)
Other
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Journal
Vol. 18
Pages: 102-119
ISSN: 1532-0383
Publisher: Taylor & Francis
Indexing
Publicação em ISI Web of Science ISI Web of Science
COMPENDEX
Scientific classification
FOS: Engineering and technology
CORDIS: Natural sciences > Environmental science
Other information
Authenticus ID: P-003-S82
Abstract (EN): The extractable contents of Zn, Pb, Cu, Cr, Mn, Ni, Fe and Al were evaluated in sediments from the Lis River (Portugal) using the three- step sequential extraction procedure described by Community Bureau of Reference (BCR, now the Standards, Measurement and Testing Programme) of the European Union. The distribution of trace metals among the exchangeable, water and acid soluble, reducible, oxidizable and residual fractions was determined. The highest metal concentrations were observed in samples collected at the most polluted river sites (animal husbandry, domestic, industrial and agricultural wastes). Pb, Cu, Cr, Ni, Fe and Al were found mainly associated with the residual and organic fractions. High concentrations of Zn and Mn were found in the exchangeable/acid soluble fraction.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 18
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