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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
24/10/2018 |
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Data da última atualização: |
24/10/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TAUBE, P. S.; SILVA, D. S.; VASCONCELOS, A. A.; REBELLATO, L.; MADEUREIRA, L. A. dos S.; HANSEL, F. A. |
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Afiliação: |
Paulo S. Taube, Universidade Federal do Oeste do Pará; Douglas S. Silva, Universidade Federal do Oeste do Pará; Arthur A. Vasconcelos, Universidade Federal do Oeste do Pará; Lilian Rebellato, Universidade Federal do Oeste do Pará; Luiz A. dos Santos Madureira, Universidade Federal de Santa Catarina; FABRICIO AUGUSTO HANSEL, CNPF. |
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Título: |
Exploratory on-line pyrolysis and thermally assisted hydrolysis and methylation for evaluating non-hydrolyzable organic matter in anthropogenic soil from Central Brazilian Amazon. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Brazilian Journal of Analytical Chemistry, v. 5, n. 19, p. 38-53, Jan. 2018. |
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DOI: |
10.30744/brjac.2179-3425.2018.5.19.38-53 |
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Idioma: |
Inglês |
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Conteúdo: |
Amazonian dark earths (ADE) are characterized by high fertility and organic carbon content, the latter being associated with black carbon (BC). BC is recalcitrant in nature due to its aromatic building blocks and it is expected to remain in the non-hydrolyzable fraction after the sequential extraction of soil organic matter (SOM). In this context, the aim of this study was to compare the composition of non-hydrolyzable SOM samples from an ADE and an adjacent soil using pyrolysis - gas chromatography - mass spectrometry and thermally-assisted hydrolysis and methylation with tetramethylammonium hydroxide. We tested two hypotheses: (i) non-hydrolyzable organic matter preserves BC in ADE and adjacent soils; and (ii) pyrolysis products are also produced thermally and are different for ADE and adjacent soils. The results of this study showed that polycyclic aromatic hydrocarbons were the main pyrolysis products for both soils. In addition, the benzene / toluene, naphthalene / methylnaphthalene and benzofuran / methylbenzofuran ratios of the pyrolysis products observed in the case of ADE were around two times higher than the corresponding values for the adjacent soil, except in the surface horizon, which indicates the presence of a higher recalcitrant BC in the ADE. The specific organic matter sources for the ADE and adjacent soil could not be differentiated. |
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Palavras-Chave: |
Black carbon; Py-GC-MS; THM-GC-MS. |
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Thesagro: |
Carbonização; Carvão. |
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Thesaurus Nal: |
Carbonization; Charcoal. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02292naa a2200277 a 4500
001 2098132
005 2018-10-24
008 2018 bl uuuu u00u1 u #d
024 7 $a10.30744/brjac.2179-3425.2018.5.19.38-53$2DOI
100 1 $aTAUBE, P. S.
245 $aExploratory on-line pyrolysis and thermally assisted hydrolysis and methylation for evaluating non-hydrolyzable organic matter in anthropogenic soil from Central Brazilian Amazon.$h[electronic resource]
260 $c2018
520 $aAmazonian dark earths (ADE) are characterized by high fertility and organic carbon content, the latter being associated with black carbon (BC). BC is recalcitrant in nature due to its aromatic building blocks and it is expected to remain in the non-hydrolyzable fraction after the sequential extraction of soil organic matter (SOM). In this context, the aim of this study was to compare the composition of non-hydrolyzable SOM samples from an ADE and an adjacent soil using pyrolysis - gas chromatography - mass spectrometry and thermally-assisted hydrolysis and methylation with tetramethylammonium hydroxide. We tested two hypotheses: (i) non-hydrolyzable organic matter preserves BC in ADE and adjacent soils; and (ii) pyrolysis products are also produced thermally and are different for ADE and adjacent soils. The results of this study showed that polycyclic aromatic hydrocarbons were the main pyrolysis products for both soils. In addition, the benzene / toluene, naphthalene / methylnaphthalene and benzofuran / methylbenzofuran ratios of the pyrolysis products observed in the case of ADE were around two times higher than the corresponding values for the adjacent soil, except in the surface horizon, which indicates the presence of a higher recalcitrant BC in the ADE. The specific organic matter sources for the ADE and adjacent soil could not be differentiated.
650 $aCarbonization
650 $aCharcoal
650 $aCarbonização
650 $aCarvão
653 $aBlack carbon
653 $aPy-GC-MS
653 $aTHM-GC-MS
700 1 $aSILVA, D. S.
700 1 $aVASCONCELOS, A. A.
700 1 $aREBELLATO, L.
700 1 $aMADEUREIRA, L. A. dos S.
700 1 $aHANSEL, F. A.
773 $tBrazilian Journal of Analytical Chemistry$gv. 5, n. 19, p. 38-53, Jan. 2018.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
08/07/2005 |
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Data da última atualização: |
19/01/2016 |
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Autoria: |
MAZZA, C. A. da S.; MAZZA, M. C. M.; SANTOS, J. E. dos. |
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Título: |
SIG aplicado à caracterização ambiental de uma unidade de conservação Floresta Nacional de Irati, Paraná. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 12., 2005, Goiânia. Anais. São José dos Campos: INPE, 2005. p. 2251-2258. |
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Idioma: |
Português |
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Palavras-Chave: |
Brasil; GIS; Irati; Paraná; SIG; Uso do solo. |
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Thesagro: |
Geologia; Sensoriamento Remoto; Sistema de Informação Geográfica; Zoneamento Ecológico. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/137305/1/2005-SANTOS-J.-E.-dos-SIG-aplicado.pdf
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Marc: |
LEADER 00812nam a2200241 a 4500
001 1298354
005 2016-01-19
008 2005 bl uuuu u00u1 u #d
100 1 $aMAZZA, C. A. da S.
245 $aSIG aplicado à caracterização ambiental de uma unidade de conservação Floresta Nacional de Irati, Paraná.$h[electronic resource]
260 $aIn: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 12., 2005, Goiânia. Anais. São José dos Campos: INPE, 2005. p. 2251-2258.$c2258
650 $aGeologia
650 $aSensoriamento Remoto
650 $aSistema de Informação Geográfica
650 $aZoneamento Ecológico
653 $aBrasil
653 $aGIS
653 $aIrati
653 $aParaná
653 $aSIG
653 $aUso do solo
700 1 $aMAZZA, M. C. M.
700 1 $aSANTOS, J. E. dos
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