Determinação de cobre, alumínio e ferro em solos derivados do basalto através de extrações seqüenciais
Copper, aluminum and iron concentrations were determined in four geochemical fractions of three different basaltic soils from the northwest region of the Parana State, Brazil. The fractions examined were the reducible manganese dioxide and amorphous iron oxide, crystaline iron oxide, organic and residual. Metal concentrations were determined in the extracts by flame atomic absorption spectrophotometry. High Fe concentrations were extracted from the crystalline iron oxide (>20%), as well as the amorphous iron oxide (>12%). Copper was extracted from the amorphous and crystalline iron oxides in the range 5 to 12%, but low concentrations were bound to organic matter. Low concentrations of aluminum were extracted (<8%) from the amorphous and crystaline iron oxides, and organic matter. High concentrations of aluminum were found in the residual fraction.
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Sociedade Brasileira de Química
2002
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oai:scielo:S0100-404220020004000072002-08-26Determinação de cobre, alumínio e ferro em solos derivados do basalto através de extrações seqüenciaisCosta,Antonio Carlos Saraiva daAlmeida,Vitor de CinqueLenzi,ErvimNozaki,Jorge sequential extractions basaltic soils atomic absorption spectrophotometry Copper, aluminum and iron concentrations were determined in four geochemical fractions of three different basaltic soils from the northwest region of the Parana State, Brazil. The fractions examined were the reducible manganese dioxide and amorphous iron oxide, crystaline iron oxide, organic and residual. Metal concentrations were determined in the extracts by flame atomic absorption spectrophotometry. High Fe concentrations were extracted from the crystalline iron oxide (>20%), as well as the amorphous iron oxide (>12%). Copper was extracted from the amorphous and crystalline iron oxides in the range 5 to 12%, but low concentrations were bound to organic matter. Low concentrations of aluminum were extracted (<8%) from the amorphous and crystaline iron oxides, and organic matter. High concentrations of aluminum were found in the residual fraction.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaQuímica Nova v.25 n.4 20022002-07-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422002000400007pt10.1590/S0100-40422002000400007 |
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Costa,Antonio Carlos Saraiva da Almeida,Vitor de Cinque Lenzi,Ervim Nozaki,Jorge |
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Costa,Antonio Carlos Saraiva da Almeida,Vitor de Cinque Lenzi,Ervim Nozaki,Jorge Determinação de cobre, alumínio e ferro em solos derivados do basalto através de extrações seqüenciais |
author_facet |
Costa,Antonio Carlos Saraiva da Almeida,Vitor de Cinque Lenzi,Ervim Nozaki,Jorge |
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Costa,Antonio Carlos Saraiva da |
title |
Determinação de cobre, alumínio e ferro em solos derivados do basalto através de extrações seqüenciais |
title_short |
Determinação de cobre, alumínio e ferro em solos derivados do basalto através de extrações seqüenciais |
title_full |
Determinação de cobre, alumínio e ferro em solos derivados do basalto através de extrações seqüenciais |
title_fullStr |
Determinação de cobre, alumínio e ferro em solos derivados do basalto através de extrações seqüenciais |
title_full_unstemmed |
Determinação de cobre, alumínio e ferro em solos derivados do basalto através de extrações seqüenciais |
title_sort |
determinação de cobre, alumínio e ferro em solos derivados do basalto através de extrações seqüenciais |
description |
Copper, aluminum and iron concentrations were determined in four geochemical fractions of three different basaltic soils from the northwest region of the Parana State, Brazil. The fractions examined were the reducible manganese dioxide and amorphous iron oxide, crystaline iron oxide, organic and residual. Metal concentrations were determined in the extracts by flame atomic absorption spectrophotometry. High Fe concentrations were extracted from the crystalline iron oxide (>20%), as well as the amorphous iron oxide (>12%). Copper was extracted from the amorphous and crystalline iron oxides in the range 5 to 12%, but low concentrations were bound to organic matter. Low concentrations of aluminum were extracted (<8%) from the amorphous and crystaline iron oxides, and organic matter. High concentrations of aluminum were found in the residual fraction. |
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Sociedade Brasileira de Química |
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2002 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422002000400007 |
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