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| Registros recuperados : 50 | |
| 22. |  | CLAPP, C. E.; HAYES, M. H. B.; SENESI, N.; BLOOM, P. R.; JARDINE, P. M. (ed.). Humic substances and chemical contaminants. Madison, WI : Soil Science Society of America, 2001. 502 p. Humic substances and chemical contaminants : proceedings of a workshop and symposium cosponsored by the International Humic Substances Society, Divisions S-2, S-1, S-3, S-4, and S-11 of the Soil Science Society of America, and Division...| Biblioteca(s): Embrapa Instrumentação. |
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| 25. | | MELLIGAN, F.; AUCCAISE, R.; NOVOTNY, E. H.; LEAHY, J. J.; HAYES, M. H. B.; KWAPINSKI, W. Pressurised pyrolysis of Miscanthus using a fixed bed reactor. Bioresource Technology, v. 102, n. 3, p. 3466-3470, Feb. 2011.| Biblioteca(s): Embrapa Solos. |
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| 27. | | NOVOTNY, E. H.; HAYES, M. H. B.; SONG, G.; AZEVEDO, E. R. de; BONAGAMBA, T. Extraction and characterisation of humin fraction from Amazonian anthropogenic dark earth soils ("Terra Preta de Indios"). In: INTERNATIONAL MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY, 14., 2008, Saint Petersburg. From molecular understanding to innovative applications of humic substances: proceedings... Moscow: Lomonosov Moscow State University, 2008. v. 1, p. 105-108.| Biblioteca(s): Embrapa Solos. |
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| 28. | | MCINERNEV, R.; STUART, J.; NOVOTNY, E. H.; HAYES, M. H. B.; YOUNG, K. Extraction and characterization of organic fractions isolated from a China Ball Clay quarried in Devon Sout West England. In: INTERNATIONAL MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY, 14., 2008, Saint Petersburg. From molecular understanding to innovative applications of humic substances: proceedings... Moscow: Lomonosov Moscow State University, 2008. v. 2, p. 567-570.| Biblioteca(s): Embrapa Solos. |
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| 33. | | SONG, G.; NOVOTNY, E. H.; SIMPSON, A. J.; CLAPP, C. E.; HAYES, M. H. B. Sequential exhaustive extraction of a Mollisol soil, and characterizations of humic components, including humin, by solid and solution state NMR. European Journal of Soil Science, Oxford, v. 59, n. 3, p. 505-516, Jun. 2008.| Biblioteca(s): Embrapa Solos. |
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| 34. | | 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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| 35. | | 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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| 37. | | MELLIGAN, F.; DUSSAN, K.; AUCCAISE, R.; NOVOTNY, E. H.; LEAHY, J. J.; 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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| 39. | | NOVOTNY, E. H.; VELLOSO, M. H. R.; AZEVEDO, E. R. de; BONAGAMBA, T. J.; SONG, G.; HAYES, M. H. B. Extração seletiva da fração húmica característica das terras pretas de índios. In: ENCONTRO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS, 8., 2009, Pelotas. Matéria orgânica ambiental e sustentabilidade: resumos expandidos. Pelotas: Embrapa Clima Temperado, 2009. 1 CD-ROM.| Biblioteca(s): Embrapa Solos. |
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| Registros recuperados : 50 | |
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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
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
09/12/2008 |
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Data da última atualização: |
27/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
SONG, G.; NOVOTNY, E. H.; SIMPSON, A. J.; CLAPP, C. E.; HAYES, M. H. B. |
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Afiliação: |
G. SONG, University of Limerick; ETELVINO HENRIQUE NOVOTNY, CNPS; A. J. SIMPSON, University of Toronto; C. E. CLAPP, University of Minnesota; M. H. B. HAYES, University of Limerick. |
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Título: |
Sequential exhaustive extraction of a Mollisol soil, and characterizations of humic components, including humin, by solid and solution state NMR. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
European Journal of Soil Science, Oxford, v. 59, n. 3, p. 505-516, Jun. 2008. |
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DOI: |
https://doi.org/10.1111/j.1365-2389.2007.01006.x |
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Idioma: |
Inglês |
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Conteúdo: |
A comprehensive sequential extraction procedure was applied to isolate soil organic components using aqueous solvents at different pH values, base plus urea (base-urea), and finally dimethylsulfoxide (DMSO) plus concentrated H2SO4 (DMSO-acid) for the humin-enriched clay separates. The extracts from base-urea and DMSO-acid would be regarded as 'humin' in the classical definitions. The fractions isolated from aqueous base, base-urea and DMSO-acid were characterized by solid and solution state NMR spectroscopy. The base-urea solvent system isolated ca. 10% (by mass) additional humic substances. The combined base-urea and DMSO-acid solvents isolated ca. 93% of total organic carbon from the humin-enriched fine clay fraction (<2 ?m). Characterization of the humic fractions by solid-state NMR spectroscopy showed that oxidized char materials were concentrated in humic acids isolated at pH 7, and in the base-urea extract. Lignin-derived materials were in considerable abundance in the humic acids isolated at pH 12.6. Only very small amounts of char-derived structures were contained in the fulvic acids and fulvic acids-like material isolated from the base-urea solvent. After extraction with base-urea, the 0.5 m NaOH extract from the humin-enriched clay was predominantly composed of aliphatic hydrocarbon groups, and with lesser amounts of aromatic carbon (probably including some char material), and carbohydrates and peptides. From the combination of solid and solution-state NMR spectroscopy, it is clear that the major components of humin materials, from the DMSO-acid solvent, after the exhaustive extraction sequence, were composed of microbial and plant derived components, mainly long-chain aliphatic species (including fatty acids/ester, waxes, lipids and cuticular material), carbohydrate, peptides/proteins, lignin derivatives, lipoprotein and peptidoglycan (major structural components in bacteria cell walls). Black carbon or char materials were enriched in humic acids isolated at pH 7 and humic acids-like material isolated in the base-urea medium, indicating that urea can liberate char-derived material hydrogen bonded or trapped within the humin matrix. MenosA comprehensive sequential extraction procedure was applied to isolate soil organic components using aqueous solvents at different pH values, base plus urea (base-urea), and finally dimethylsulfoxide (DMSO) plus concentrated H2SO4 (DMSO-acid) for the humin-enriched clay separates. The extracts from base-urea and DMSO-acid would be regarded as 'humin' in the classical definitions. The fractions isolated from aqueous base, base-urea and DMSO-acid were characterized by solid and solution state NMR spectroscopy. The base-urea solvent system isolated ca. 10% (by mass) additional humic substances. The combined base-urea and DMSO-acid solvents isolated ca. 93% of total organic carbon from the humin-enriched fine clay fraction (<2 ?m). Characterization of the humic fractions by solid-state NMR spectroscopy showed that oxidized char materials were concentrated in humic acids isolated at pH 7, and in the base-urea extract. Lignin-derived materials were in considerable abundance in the humic acids isolated at pH 12.6. Only very small amounts of char-derived structures were contained in the fulvic acids and fulvic acids-like material isolated from the base-urea solvent. After extraction with base-urea, the 0.5 m NaOH extract from the humin-enriched clay was predominantly composed of aliphatic hydrocarbon groups, and with lesser amounts of aromatic carbon (probably including some char material), and carbohydrates and peptides. From the combination of solid and solution-state NMR spectros... Mostrar Tudo |
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Palavras-Chave: |
Extração sequencial; Solo Mollisol; Substâncias húmicas. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02945naa a2200217 a 4500
001 1339738
005 2021-10-27
008 2008 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/j.1365-2389.2007.01006.x$2DOI
100 1 $aSONG, G.
245 $aSequential exhaustive extraction of a Mollisol soil, and characterizations of humic components, including humin, by solid and solution state NMR.$h[electronic resource]
260 $c2008
520 $aA comprehensive sequential extraction procedure was applied to isolate soil organic components using aqueous solvents at different pH values, base plus urea (base-urea), and finally dimethylsulfoxide (DMSO) plus concentrated H2SO4 (DMSO-acid) for the humin-enriched clay separates. The extracts from base-urea and DMSO-acid would be regarded as 'humin' in the classical definitions. The fractions isolated from aqueous base, base-urea and DMSO-acid were characterized by solid and solution state NMR spectroscopy. The base-urea solvent system isolated ca. 10% (by mass) additional humic substances. The combined base-urea and DMSO-acid solvents isolated ca. 93% of total organic carbon from the humin-enriched fine clay fraction (<2 ?m). Characterization of the humic fractions by solid-state NMR spectroscopy showed that oxidized char materials were concentrated in humic acids isolated at pH 7, and in the base-urea extract. Lignin-derived materials were in considerable abundance in the humic acids isolated at pH 12.6. Only very small amounts of char-derived structures were contained in the fulvic acids and fulvic acids-like material isolated from the base-urea solvent. After extraction with base-urea, the 0.5 m NaOH extract from the humin-enriched clay was predominantly composed of aliphatic hydrocarbon groups, and with lesser amounts of aromatic carbon (probably including some char material), and carbohydrates and peptides. From the combination of solid and solution-state NMR spectroscopy, it is clear that the major components of humin materials, from the DMSO-acid solvent, after the exhaustive extraction sequence, were composed of microbial and plant derived components, mainly long-chain aliphatic species (including fatty acids/ester, waxes, lipids and cuticular material), carbohydrate, peptides/proteins, lignin derivatives, lipoprotein and peptidoglycan (major structural components in bacteria cell walls). Black carbon or char materials were enriched in humic acids isolated at pH 7 and humic acids-like material isolated in the base-urea medium, indicating that urea can liberate char-derived material hydrogen bonded or trapped within the humin matrix.
653 $aExtração sequencial
653 $aSolo Mollisol
653 $aSubstâncias húmicas
700 1 $aNOVOTNY, E. H.
700 1 $aSIMPSON, A. J.
700 1 $aCLAPP, C. E.
700 1 $aHAYES, M. H. B.
773 $tEuropean Journal of Soil Science, Oxford$gv. 59, n. 3, p. 505-516, Jun. 2008.
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