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| Registros recuperados : 273 | |
| 122. |  | NOVOTNY, E. H.; BONAGAMBA, T. J.; AZEVEDO, E. R. de; HAYES, M. H. B. Solid-state 13C nuclear magnetic resonance characterisation of humic acids extracted from amazonian dark earths (terra preta de índio). In: WOODS, W. I.; TEIXEIRA, W. G.; LEHMANN, J.; STEINER, C.; WINKLERPRINS, A.; REBELLATO, L. (ed.). Amazonian dark earths: Wim Sombroek's vision. Berlin: Springer, 2009. cap. 21, p. 373-391.| Biblioteca(s): Embrapa Solos. |
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| 127. | | SIMPSON, A. J.; SONG, G.; SMITH, E.; LAM, B.; NOVOTNY, E. H.; HAYES, M. H. B. Unraveling the structural components of soil humin by use of solution-state nuclear magnetic resonance spectroscopy. Environmental Science & Technology, v. 41, n. 3, p. 876-883, Feb. 2007.| Biblioteca(s): Embrapa Solos. |
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| 132. | | SAAB, S. da C.; MELLO, N. C.; COLNAGO, L. A.; CONCEIÇÃO, M. da; NOVOTNY, E. H.; MARTIN-NETO, L. Anéis aromáticos condensados e relação E4/E6: estudo de ácidos húmicos por ¹³C NMR CPMAS usando desacoplamento defasado. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 26., 1999, Brasília. Ciência do solo qualidade de vida. Brasília: Embrapa Cerrados; Sociedade Brasileira de Ciência do Solo, 1999. 1 f. ref. TO51-2 - Painel: B-21. Resumo. 1 CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
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| 134. | | QUADROS, R. M. B. de; BELLOTE, A. F. J.; NOVOTNY, E. H.; BOGNOLA, I.; CARDOSO, A.; MARQUES, J. M. Aplicabilidade da análise fatorial na avaliação da produtividade de Eucalyptus grandis. In: CONGRESSO LATINOAMERICANO DE CIENCIA DO SOLO, 13., 1996, Aguas de Lindoia. Anais. Sao Paulo. Sociedade Brasileira de Ciencia do Solo / Sociedade Latinoamericana de Ciencia do Solo, 1996. CD Rom| Biblioteca(s): Embrapa Florestas. |
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| 136. | | ESTRADA, R. A.; Rodrigo de Oliveira Silva; BONAGAMBA, T. J.; BALIEIRO, F. de C.; NOVOTNY, E. H. Applying NMR relaxometry procedures to characterize and classify soil samples. In: ISMAR, 18., NMR, 14., IBEROAMERICAN NMR MEETING,5., Rio de Janeiro, 2013. Anais... Rio de Janeiro: Petrobrás, FAPERJ, Ministério do Trabalho e Emprego, 2013.| Biblioteca(s): Embrapa Solos. |
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| 138. | | MELLIGAN, F.; DUSSAN, K.; AUCCAISE, R.; NOVOTNY, E. H.; LEAHY, E. H.; HAYES, M. H. B.; KWAPINSKI, W. Characterisation of the products from pyrolysis of residues after acid hydrolysis of miscanthus. Bioresource Technology, v. 108, p. 258-263, Mar. 2012.| Biblioteca(s): Embrapa Solos. |
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| 140. | | OLIVEIRA-SILVA, R. de; ESTRADA, R. A.; BALIEIRO, F. de C.; NOVOTNY, E. H.; BONAGAMBA, T. J. Estimation of available water in soils by NMR relaxometry. In: ISMAR, 18., NMR, 14., IBEROAMERICAN NMR MEETING,5., Rio de Janeiro, 2013. Anais... Rio de Janeiro: Petrobrás, FAPERJ, Ministério do Trabalho e Emprego, 2013.| Biblioteca(s): Embrapa Solos. |
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| Registros recuperados : 273 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Solos. |
|
Data corrente: |
10/01/2007 |
|
Data da última atualização: |
20/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
Internacional - A |
|
Autoria: |
SIMPSON, A. J.; SONG, G.; SMITH, E.; LAM, B.; NOVOTNY, E. H.; HAYES, M. H. B. |
|
Afiliação: |
ANDRE J. SIMPSON, UNIVERSITY OF TORONTO; GUIXUE SONG, UNIVERSITY OF LIMERICK; EMMA SMITH, UNIVERSITY OF TORONTO; BUUAN LAM, UNIVERSITY OF TORONTO; ETELVINO HENRIQUE NOVOTNY, CNPS; MICHAEL H. B. HAYES, UNIVERSITY OF LIMERICK. |
|
Título: |
Unraveling the structural components of soil humin by use of solution-state nuclear magnetic resonance spectroscopy. |
|
Ano de publicação: |
2007 |
|
Fonte/Imprenta: |
Environmental Science & Technology, v. 41, n. 3, p. 876-883, Feb. 2007. |
|
DOI: |
https://doi.org/10.1021/es061576c |
|
Idioma: |
Inglês |
|
Conteúdo: |
Humin is the most recalcitrant and least understood fraction of soil organic matter. By definition, humin is that fraction not extracted by traditional aqueous alkaline soil extractants. Here we show that >_70% of the traditional humin fraction is solubilized when 0.1 M NaOH + 6 M urea and dimethyl sulfoxide (DMSO) + 6% H2SO4 are used in series after conventional extraction. Multidimensional solution-state NMR is applied in this study to gain an understanding of the major constituents present in these "solubilized humin fractions". The spectra indicated strong contributions from five main categories of components, namely. peptides, aliphatic species, carbohydrates, peptidoglycan, and lignin. Diffusion edited spectroscopy indicated that all species are present as macromolecules (or stable aggregate species). Although the distribution of the components is generally similar, peptidoglycan is present at significant levels supporting a higher microbial contribution to humin than to humic and fulvic fractions. The abundance of plant- and microbial-derived materials found does not exclude "humic" materials (e.g., oxidized lignin) or the presence of novel compounds at lower concentrations but suggests that a large proportion of humin is formed from classes of known compounds and parent biopolymers. |
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Palavras-Chave: |
Organic polymers. |
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Thesaurus NAL: |
Biopolymers; Carbohydrates; Peptides; Proteins; Soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 02103naa a2200265 a 4500
001 1339170
005 2021-10-20
008 2007 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1021/es061576c$2DOI
100 1 $aSIMPSON, A. J.
245 $aUnraveling the structural components of soil humin by use of solution-state nuclear magnetic resonance spectroscopy.$h[electronic resource]
260 $c2007
520 $aHumin is the most recalcitrant and least understood fraction of soil organic matter. By definition, humin is that fraction not extracted by traditional aqueous alkaline soil extractants. Here we show that >_70% of the traditional humin fraction is solubilized when 0.1 M NaOH + 6 M urea and dimethyl sulfoxide (DMSO) + 6% H2SO4 are used in series after conventional extraction. Multidimensional solution-state NMR is applied in this study to gain an understanding of the major constituents present in these "solubilized humin fractions". The spectra indicated strong contributions from five main categories of components, namely. peptides, aliphatic species, carbohydrates, peptidoglycan, and lignin. Diffusion edited spectroscopy indicated that all species are present as macromolecules (or stable aggregate species). Although the distribution of the components is generally similar, peptidoglycan is present at significant levels supporting a higher microbial contribution to humin than to humic and fulvic fractions. The abundance of plant- and microbial-derived materials found does not exclude "humic" materials (e.g., oxidized lignin) or the presence of novel compounds at lower concentrations but suggests that a large proportion of humin is formed from classes of known compounds and parent biopolymers.
650 $aBiopolymers
650 $aCarbohydrates
650 $aPeptides
650 $aProteins
650 $aSoil
653 $aOrganic polymers
700 1 $aSONG, G.
700 1 $aSMITH, E.
700 1 $aLAM, B.
700 1 $aNOVOTNY, E. H.
700 1 $aHAYES, M. H. B.
773 $tEnvironmental Science & Technology$gv. 41, n. 3, p. 876-883, Feb. 2007.
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