Extraction and quantification of exchangeable aluminum in Fibric Histosol
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/18498 |
Resumo: | The objective of this work was to evaluate different methods for extraction and quantification of exchangeable aluminum in Fibric Histosol. Samples were collected in three peat bog profiles and then air dried and passed through 2 mm sieve. Extractions were made with KCl 1 mol L-1, Ca(OAc2) 1 mol L-1, and CuCl2 0.5 mol L-1. Then, the extracts obtained by KCl and Ca(OAc2) were analyzed by titration with NaOH 0.025 mol L-1 and by graphite furnace atomic absorption spectrometry (GF‑AAS). The extracts obtained by CuCl2 were analyzed by GF‑AAS. Quantifying with GF‑AAS resulted in similar ability of KCl and Ca(OAc2) to extract exchangeable aluminum, whereas CuCl2 was also able to extract the reactive Al. The high levels of exchangeable aluminum observed in titration after extraction by KCl may be related to the high levels of the H+ ion present in the samples. The method recommended for determination of exchangeable aluminum content in Fibric Histosol is extraction with KCl or Ca(OAc2) and, for quantification, the graphite furnace atomic absorption spectrometry. |
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Extraction and quantification of exchangeable aluminum in Fibric HistosolExtração e quantificação de alumínio trocável em Organossolosatomic absorption spectrometry; graphite furnace; soil chemistry; peat bogsespectrometria de absorção atômica; forno de grafite; química do solo; tufeirasThe objective of this work was to evaluate different methods for extraction and quantification of exchangeable aluminum in Fibric Histosol. Samples were collected in three peat bog profiles and then air dried and passed through 2 mm sieve. Extractions were made with KCl 1 mol L-1, Ca(OAc2) 1 mol L-1, and CuCl2 0.5 mol L-1. Then, the extracts obtained by KCl and Ca(OAc2) were analyzed by titration with NaOH 0.025 mol L-1 and by graphite furnace atomic absorption spectrometry (GF‑AAS). The extracts obtained by CuCl2 were analyzed by GF‑AAS. Quantifying with GF‑AAS resulted in similar ability of KCl and Ca(OAc2) to extract exchangeable aluminum, whereas CuCl2 was also able to extract the reactive Al. The high levels of exchangeable aluminum observed in titration after extraction by KCl may be related to the high levels of the H+ ion present in the samples. The method recommended for determination of exchangeable aluminum content in Fibric Histosol is extraction with KCl or Ca(OAc2) and, for quantification, the graphite furnace atomic absorption spectrometry.O objetivo deste trabalho foi avaliar diferentes métodos de extração e quantificação de alumínio trocável em Organossolos. As amostras foram coletadas em três perfis de turfeira e, então, secas ao ar e passadas em peneira de malha de 2 mm. Foram feitas extrações com KCl 1 mol L-1, Ca(OAc2) 1 mol L-1 e CuCl2 0,5 mol L-1. Em seguida, os extratos obtidos por KCl e Ca(OAc2) foram analisados por titulação com NaOH 0,025 mol L-1 e por espectrômetro de absorção atômica com forno de grafite (GF‑AAE). Os extratos obtidos por CuCl2 foram analisados por GF‑AAE. Na quantificação por GF‑AAE, os extratores KCl e Ca(OAc2) tiveram capacidade semelhante de extrair alumínio trocável, enquanto o CuCl2 foi capaz de extrair também o Al reativo. Os elevados teores de alumínio trocável observados na titulação após extração com KCl podem estar relacionados aos elevados teores do íon H+ presente nas amostras. O método indicado para determinação do teor de alumínio trocável em Organossolos é a extração com KCl ou com Ca(OAc2) e, para quantificação, a espectrofotometria de absorção atômica com forno de grafite.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCAPESCNPqCampos, José Ricardo da RochaSilva, Alexandre ChristófaroSilva, Enilson de BarrosVidal-Torrado, Pablo2014-05-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/18498Pesquisa Agropecuaria Brasileira; v.49, n.3, mar. 2014; 207-214Pesquisa Agropecuária Brasileira; v.49, n.3, mar. 2014; 207-2141678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/18498/12621info:eu-repo/semantics/openAccess2014-05-29T19:45:50Zoai:ojs.seer.sct.embrapa.br:article/18498Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-05-29T19:45:50Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Extraction and quantification of exchangeable aluminum in Fibric Histosol Extração e quantificação de alumínio trocável em Organossolos |
title |
Extraction and quantification of exchangeable aluminum in Fibric Histosol |
spellingShingle |
Extraction and quantification of exchangeable aluminum in Fibric Histosol Campos, José Ricardo da Rocha atomic absorption spectrometry; graphite furnace; soil chemistry; peat bogs espectrometria de absorção atômica; forno de grafite; química do solo; tufeiras |
title_short |
Extraction and quantification of exchangeable aluminum in Fibric Histosol |
title_full |
Extraction and quantification of exchangeable aluminum in Fibric Histosol |
title_fullStr |
Extraction and quantification of exchangeable aluminum in Fibric Histosol |
title_full_unstemmed |
Extraction and quantification of exchangeable aluminum in Fibric Histosol |
title_sort |
Extraction and quantification of exchangeable aluminum in Fibric Histosol |
author |
Campos, José Ricardo da Rocha |
author_facet |
Campos, José Ricardo da Rocha Silva, Alexandre Christófaro Silva, Enilson de Barros Vidal-Torrado, Pablo |
author_role |
author |
author2 |
Silva, Alexandre Christófaro Silva, Enilson de Barros Vidal-Torrado, Pablo |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
CAPES CNPq |
dc.contributor.author.fl_str_mv |
Campos, José Ricardo da Rocha Silva, Alexandre Christófaro Silva, Enilson de Barros Vidal-Torrado, Pablo |
dc.subject.por.fl_str_mv |
atomic absorption spectrometry; graphite furnace; soil chemistry; peat bogs espectrometria de absorção atômica; forno de grafite; química do solo; tufeiras |
topic |
atomic absorption spectrometry; graphite furnace; soil chemistry; peat bogs espectrometria de absorção atômica; forno de grafite; química do solo; tufeiras |
description |
The objective of this work was to evaluate different methods for extraction and quantification of exchangeable aluminum in Fibric Histosol. Samples were collected in three peat bog profiles and then air dried and passed through 2 mm sieve. Extractions were made with KCl 1 mol L-1, Ca(OAc2) 1 mol L-1, and CuCl2 0.5 mol L-1. Then, the extracts obtained by KCl and Ca(OAc2) were analyzed by titration with NaOH 0.025 mol L-1 and by graphite furnace atomic absorption spectrometry (GF‑AAS). The extracts obtained by CuCl2 were analyzed by GF‑AAS. Quantifying with GF‑AAS resulted in similar ability of KCl and Ca(OAc2) to extract exchangeable aluminum, whereas CuCl2 was also able to extract the reactive Al. The high levels of exchangeable aluminum observed in titration after extraction by KCl may be related to the high levels of the H+ ion present in the samples. The method recommended for determination of exchangeable aluminum content in Fibric Histosol is extraction with KCl or Ca(OAc2) and, for quantification, the graphite furnace atomic absorption spectrometry. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-05-29 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/18498 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/18498 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/18498/12621 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.49, n.3, mar. 2014; 207-214 Pesquisa Agropecuária Brasileira; v.49, n.3, mar. 2014; 207-214 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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