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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
04/05/2001 |
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Data da última atualização: |
30/03/2017 |
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Autoria: |
WILCKE, W.; AMELUNG, W. |
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Título: |
Persistent organic pollutants in native grassland soils along a climosequence in North America. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Soil Science Society of America Journal, v.64, n.6, p.2140-2148, 2000. |
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Idioma: |
Inglês |
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Conteúdo: |
Among the controls on the fate of harzardous persistent organic pollutants (POPs) in the environment, soil organic matter (SOM) and climate play an outstanding role. Thus, it may be possible to predict POP concentrations at background sites from SOM properties and climate elements. we therefore related polycyclic aromatic hydrocarbon (PAH) and polychlorinated biphenyl (PCB) concentrations in 18 mollic epipedons under native grassland to SOM properties (lignin-derived phenolos, polycarboxylic benzoic acids [PCBAs], aromaticity, and polarity of alkali-extractable SOM) and climatic elements. The sum of 20 PAH (20PAHs) concentrations ranged from 63 to 321 ug kg-1, and that of 14 PCB (14PCBs) concentrations ranged from 7.9 to 93 ug kg-1, except at one contaminated site (3136 ug kh-1). On average, phenanthrene (PHEN, 38% of the 20PAHs concentrations) and naphthalene (NAPH, 28%) were the most abundant PAHs, congeners 28 (22% of the 14PCB concentrations) and 101 (17%) were the most abundant PCBs. Soil organic C (SOC) concentrations correlated with the 20PAHs concentrations; the C concentrations in the sum of eight PCBAs, a marker for black C, correlated with the concentraqtions of higher molecular weight PAHs, except in soils with cyric temperature regime. The 14PCBs concentrations was independent of any soil property. The contribution of NAPH to the 20PAHs concentrations and that of the up to tetrachlorinated PCBs to the 14PCBs concentrations decreased with increasing mean annual temperatrure (MAT). Th percentage of PCB 101 increased with increasing MAT. However, the temperature effect was not strong. Mean annual precipitation (MAP) neither effected PAH nor PCB patterns. Our results indicate that the easily measured SOC concentrations may be used to predict PAH concentrations in native grassland soils of the prairie. Including MAT improves the prediction of NAPH concentrations. The influence of MAT on PCB concentrations is obvious, but the correlation is too weak to be used for reliable predictions. MenosAmong the controls on the fate of harzardous persistent organic pollutants (POPs) in the environment, soil organic matter (SOM) and climate play an outstanding role. Thus, it may be possible to predict POP concentrations at background sites from SOM properties and climate elements. we therefore related polycyclic aromatic hydrocarbon (PAH) and polychlorinated biphenyl (PCB) concentrations in 18 mollic epipedons under native grassland to SOM properties (lignin-derived phenolos, polycarboxylic benzoic acids [PCBAs], aromaticity, and polarity of alkali-extractable SOM) and climatic elements. The sum of 20 PAH (20PAHs) concentrations ranged from 63 to 321 ug kg-1, and that of 14 PCB (14PCBs) concentrations ranged from 7.9 to 93 ug kg-1, except at one contaminated site (3136 ug kh-1). On average, phenanthrene (PHEN, 38% of the 20PAHs concentrations) and naphthalene (NAPH, 28%) were the most abundant PAHs, congeners 28 (22% of the 14PCB concentrations) and 101 (17%) were the most abundant PCBs. Soil organic C (SOC) concentrations correlated with the 20PAHs concentrations; the C concentrations in the sum of eight PCBAs, a marker for black C, correlated with the concentraqtions of higher molecular weight PAHs, except in soils with cyric temperature regime. The 14PCBs concentrations was independent of any soil property. The contribution of NAPH to the 20PAHs concentrations and that of the up to tetrachlorinated PCBs to the 14PCBs concentrations decreased with increasing mean annual t... Mostrar Tudo |
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Palavras-Chave: |
Contaminante organico; Native grassland; Organic pollutant. |
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Thesagro: |
Pastagem Nativa; Solo. |
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Thesaurus Nal: |
soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02620naa a2200205 a 4500
001 1806255
005 2017-03-30
008 2000 bl --- 0-- u #d
100 1 $aWILCKE, W.
245 $aPersistent organic pollutants in native grassland soils along a climosequence in North America.
260 $c2000
520 $aAmong the controls on the fate of harzardous persistent organic pollutants (POPs) in the environment, soil organic matter (SOM) and climate play an outstanding role. Thus, it may be possible to predict POP concentrations at background sites from SOM properties and climate elements. we therefore related polycyclic aromatic hydrocarbon (PAH) and polychlorinated biphenyl (PCB) concentrations in 18 mollic epipedons under native grassland to SOM properties (lignin-derived phenolos, polycarboxylic benzoic acids [PCBAs], aromaticity, and polarity of alkali-extractable SOM) and climatic elements. The sum of 20 PAH (20PAHs) concentrations ranged from 63 to 321 ug kg-1, and that of 14 PCB (14PCBs) concentrations ranged from 7.9 to 93 ug kg-1, except at one contaminated site (3136 ug kh-1). On average, phenanthrene (PHEN, 38% of the 20PAHs concentrations) and naphthalene (NAPH, 28%) were the most abundant PAHs, congeners 28 (22% of the 14PCB concentrations) and 101 (17%) were the most abundant PCBs. Soil organic C (SOC) concentrations correlated with the 20PAHs concentrations; the C concentrations in the sum of eight PCBAs, a marker for black C, correlated with the concentraqtions of higher molecular weight PAHs, except in soils with cyric temperature regime. The 14PCBs concentrations was independent of any soil property. The contribution of NAPH to the 20PAHs concentrations and that of the up to tetrachlorinated PCBs to the 14PCBs concentrations decreased with increasing mean annual temperatrure (MAT). Th percentage of PCB 101 increased with increasing MAT. However, the temperature effect was not strong. Mean annual precipitation (MAP) neither effected PAH nor PCB patterns. Our results indicate that the easily measured SOC concentrations may be used to predict PAH concentrations in native grassland soils of the prairie. Including MAT improves the prediction of NAPH concentrations. The influence of MAT on PCB concentrations is obvious, but the correlation is too weak to be used for reliable predictions.
650 $asoil
650 $aPastagem Nativa
650 $aSolo
653 $aContaminante organico
653 $aNative grassland
653 $aOrganic pollutant
700 1 $aAMELUNG, W.
773 $tSoil Science Society of America Journal$gv.64, n.6, p.2140-2148, 2000.
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Registro original: |
Embrapa Pantanal (CPAP) |
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Registro Completo
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
22/05/2007 |
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Data da última atualização: |
07/06/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ALVAREZ, E.; LOZANO, A. I.; RODRIGUES NETO, J.; MARINGONI, A. C.; MARQUES, A. S. A. |
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Título: |
Caracterização sorológica e otimização de métodos para detecção de Pseudomonas syringae pv. tabaci. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Fitopatologia Brasileira, v. 31, suppl., ago. 2006. Anais do: CONGRESSO BRASILEIRO DE FITOPATOLOGIA, 39.; ANNUAL MEETING OF THE BRAZILIAN PHYTOPATHOLOGICAL SOCIETY, 39., 2006, Salvador, BA. |
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Páginas: |
p. S209. |
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Idioma: |
Português |
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Palavras-Chave: |
Pseudomonas syringae pv; tabaci. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/178357/1/ID-28045-1-a.pdf
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Marc: |
LEADER 00724nam a2200181 a 4500
001 1188407
005 2018-06-07
008 2006 bl uuuu u00u1 u #d
100 1 $aALVAREZ, E.
245 $aCaracterização sorológica e otimização de métodos para detecção de Pseudomonas syringae pv. tabaci.$h[electronic resource]
260 $aFitopatologia Brasileira, v. 31, suppl., ago. 2006. Anais do: CONGRESSO BRASILEIRO DE FITOPATOLOGIA, 39.; ANNUAL MEETING OF THE BRAZILIAN PHYTOPATHOLOGICAL SOCIETY, 39., 2006, Salvador$c2006
300 $ap. S209.
653 $aPseudomonas syringae pv
653 $atabaci
700 1 $aLOZANO, A. I.
700 1 $aRODRIGUES NETO, J.
700 1 $aMARINGONI, A. C.
700 1 $aMARQUES, A. S. A.
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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