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dc.contributor.authorBERNINI, T. A.pt_BR
dc.contributor.authorPEREIRA, M. G.pt_BR
dc.contributor.authorANJOS, L. H. C. dospt_BR
dc.contributor.authorPEREZ, D. V.pt_BR
dc.contributor.authorFONTANA, A.pt_BR
dc.contributor.authorCALDERANO, S. B.pt_BR
dc.contributor.authorWADT, P. G. S.pt_BR
dc.date.accessioned2014-02-28T11:11:11Zpt_BR
dc.date.available2014-02-28T11:11:11Zpt_BR
dc.date.created2014-02-28pt_BR
dc.date.issued2013pt_BR
dc.identifier.citationRevista Brasileira de Ciência do Solo, Rio de Janeiro, v. 37,n. 6, p. 1441-1453, 2013.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/981532pt_BR
dc.descriptionThe variety of soils in the State of Acre is wide and their chemical profiles are still not fully understood. The nature of the material of origin of these soils is indicated by the high aluminium (Al) content, commonly associated with high calcium (Ca) and magnesium (Mg) contents. The study objective was to use different methods to quantify Al in soils from toposequences formed from material of a sedimentary nature originating from the Solimões Formation, in Acre, Brazil. Trenches were opened at three distinct points in the landscape: shoulder, backslope and footslope positions. Soil samples were collected for physical, chemical, mineralogical analyses. The Al content was quantified using different methods. High Al contents were found in most of these horizons, associated with high Ca and Mg levels, representing the predominant cations in the sum of exchangeable bases. The mineralogy indicates that the soils are still in a low weathering phase, with the presence of significant quantities of 2:1 minerals. Similar Al contents were determined by the methods of NaOH titration, xylenol orange spectrometry and inductively coupled plasma optical emission spectrometry. However, no consistent data were obtained by the pyrocatechol violet method. Extraction with KCl overestimated the exchangeable Al content due to its ability to extract the non-exchangeable Al present in the smectite interlayers. It was observed that high Al contents are related to the instability of the hydroxyl-Al smectite interlayers.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectAlumínio trocávelpt_BR
dc.subjectEsmectitapt_BR
dc.subjectFormação Solimõespt_BR
dc.subjectAmazônia Ocidentalpt_BR
dc.subjectWestern Amazonpt_BR
dc.subjectAmazonia Occidentalpt_BR
dc.subjectAluminio intercambiablept_BR
dc.subjectQuímica del suelopt_BR
dc.titleQuantification of aluminium in soil of the Solimões formation, Acre State, Brazil.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2019-01-10T11:11:11Zpt_BR
dc.subject.thesagroQuímica do solopt_BR
dc.subject.thesagroAlumíniopt_BR
dc.subject.nalthesaurusSoil chemistrypt_BR
dc.subject.nalthesaurusExchangeable aluminumpt_BR
riaa.ainfo.id981532pt_BR
riaa.ainfo.lastupdate2019-01-10 -02:00:00pt_BR
dc.contributor.institutionThiago Andrade Bernini, UFRRJ; Marcos Gervasio Pereira, UFRRJ; Lúcia Helena Cunha dos Anjos, UFRRJ; DANIEL VIDAL PEREZ, CNPS; ADEMIR FONTANA, CNPS; SEBASTIAO BARREIROS CALDERANO, CNPS; PAULO GUILHERME SALVADOR WADT, CPAF-AC.pt_BR
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