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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(s): |
Embrapa Semiárido. |
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Data corrente: |
06/09/2004 |
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Data da última atualização: |
22/06/2022 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
BARBOSA, F. R.; SANTANA, M. do R. de S. P.; SILVA, C. S. B. da; PARANHOS, B. A. J. |
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Afiliação: |
FLAVIA RABELO BARBOSA, CPATSA; BEATRIZ AGUIAR GIORDANO PARANHOS, CPATSA. |
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Título: |
Maconellicoccus hirsutus (Hemíptera: Pseudococcidae): uma ameaça à fruticultura brasileira. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 20., 2004, Gramado. Programa e resumos... Gramado: SEB: Embrapa Uva e Vinho, 2004. |
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Páginas: |
p. 563. |
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Idioma: |
Português |
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Conteúdo: |
Os danos causados são severos. podendo levar a planta à morte. |
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Palavras-Chave: |
Goiabeira; Mangueira. |
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Thesagro: |
Cochonilha Rosada; Goiaba; Manga; Mangifera Indica; Praga Quarentenária; Psidium Guajava. |
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Thesaurus NAL: |
Guavas; Mangoes. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/197088/1/Congresso-de-Entomologia-pag-563.pdf
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Marc: |
LEADER 00901nam a2200277 a 4500
001 1154272
005 2022-06-22
008 2004 bl uuuu u00u1 u #d
100 1 $aBARBOSA, F. R.
245 $aMaconellicoccus hirsutus (Hemíptera$bPseudococcidae): uma ameaça à fruticultura brasileira.
260 $aIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 20., 2004, Gramado. Programa e resumos... Gramado: SEB: Embrapa Uva e Vinho$c2004
300 $ap. 563.
520 $aOs danos causados são severos. podendo levar a planta à morte.
650 $aGuavas
650 $aMangoes
650 $aCochonilha Rosada
650 $aGoiaba
650 $aManga
650 $aMangifera Indica
650 $aPraga Quarentenária
650 $aPsidium Guajava
653 $aGoiabeira
653 $aMangueira
700 1 $aSANTANA, M. do R. de S. P.
700 1 $aSILVA, C. S. B. da
700 1 $aPARANHOS, B. A. J.
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