Organo-mineral associations in a Spodosol from northern Brazil

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Federal de Santa Catarina (UFSC)-
Autor(es): dc.contributorCNR-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorClabel, J. L.-
Autor(es): dc.creatorNicolodelli, G.-
Autor(es): dc.creatorSenesi, G. S.-
Autor(es): dc.creatorMontes, C. R.-
Autor(es): dc.creatorPerruci, N. A. Felicio [UNESP]-
Autor(es): dc.creatorBezzon, V. D. N. [UNESP]-
Autor(es): dc.creatorBalogh, D. T.-
Autor(es): dc.creatorMilori, D. M. B. P.-
Data de aceite: dc.date.accessioned2022-02-22T00:54:27Z-
Data de disponibilização: dc.date.available2022-02-22T00:54:27Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.geodrs.2020.e00303-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/208802-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/208802-
Descrição: dc.descriptionThe associations between organic and mineral matter in the horizons of an Amazonian humiluvic Spodosol profile were studied by investigating the composition of the constituent organic compounds, the surface wettability and the relationships among the chemical, structural, and microstructural properties using Fourier Transform Infrared (FTIR) spectroscopy and contact angle (CA) analysis. With increasing the profile depth, the C-H FTIR absorption decreased accompanied by a relative increase in C = O FTIR absorption. A number of significant correlations were found between the experimental variables measured. In particular, the positive correlation between soil organic carbon (SOC) (1.43 to 31.13 g kg(-1)) and intensity of aromatic structural C = C peak at 1620 cm(-1) downward the soil profile suggested the existence of higher amounts of more stable organic compounds with depth. The negative correlation between the intensity of aliphatic structures peaks from 3000 to 2800 cm(-1) and the clay minerals content indicated an increasing soil wettability with depth. The relative affinity of organic matter to mineral surfaces changed as a function of the mineral type distribution along the soil profile. As well, the chemical composition of organic matter and the type of phase fractions influenced whole soil wettability based on the SOC/clay relation to CA. (C) 2020 Elsevier B.V. All rights reserved.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionEmbrapa Instrumentat, POB 741, BR-13560970 Sao Carlos, SP, Brazil-
Descrição: dc.descriptionUniv Sao Paulo, Sao Carlos Inst Phys, POB 369, BR-13560970 Sao Carlos, SP, Brazil-
Descrição: dc.descriptionUniv Fed Santa Catarina, Dept Phys, POB 476, BR-88040900 Florianopolis, SC, Brazil-
Descrição: dc.descriptionCNR, Ist Sci & Tecnol Plasmi ISTP, Sede Bari, Via Amendola 122-D, I-70126 Bari, Italy-
Descrição: dc.descriptionUniv Sao Paulo, Ctr Nucl Energy Agr, POB 09, BR-13418900 Piracicaba, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Inst Chem, POB 09, BR-14800900 Araraquara, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Inst Chem, POB 09, BR-14800900 Araraquara, SP, Brazil-
Descrição: dc.descriptionCNPq: 402624/2015-7-
Formato: dc.format10-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationGeoderma Regional-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectAmazon humiluvic Spodosol-
Palavras-chave: dc.subjectOrganic matter-
Palavras-chave: dc.subjectMinerals-
Palavras-chave: dc.subjectContact angle-
Título: dc.titleOrgano-mineral associations in a Spodosol from northern Brazil-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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