| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
23/06/2003 |
|
Data da última atualização: |
07/05/2008 |
|
Autoria: |
MILORI, D. M. B. P.; MARTIN-NETO, L.; BAGNATO, V. S.; BAYER, C.; MIELNICZUCK, J. |
|
Afiliação: |
Embrapa Instrumentação Agropecuária, São Carlos, SP. |
|
Título: |
Photoluminescence spectroscopy to evaluate soil humic acids under different tillage systems |
|
Ano de publicação: |
2002 |
|
Fonte/Imprenta: |
In: INTERNATIONAL HUMIC SUBSTANCES SOCIETY-IHSS; ANNIVERSARY CONFERENCE, 20., 2002, Boston. IHSS 2002: humic substances: nature's most versatile materials.proceedings. Boston: Northeastern University, 2002. |
|
Páginas: |
p. 35-37. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Fluorescence showed to be a very sensitive tool to measure structural changes of soil humic acid under different tillage. When excited at 240 nm the fluorescence spectra shows a red shift regarding with forest soil, suggesting an increase of (...) size of the molecule, and consequently soil degradtion. The excitation at 465 nm seems to be associated with humidcation of humic substances and it should be used as a humification index to evaluate soil quality. The correlation between fluorescence techniques to evaluate humification index was very high and consistent with ESR measurements. |
|
Palavras-Chave: |
Ácido húmico; Espectroscopia; Fotoluminescência; Substâncias húmicas. |
|
Thesagro: |
Solo. |
|
Thesaurus Nal: |
humic acids; humic substances; photoluminescence; soil; spectroscopy. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01568naa a2200301 a 4500
001 1024756
005 2008-05-07
008 2002 bl --- 0-- u #d
100 1 $aMILORI, D. M. B. P.
245 $aPhotoluminescence spectroscopy to evaluate soil humic acids under different tillage systems
260 $c2002
300 $ap. 35-37.
520 $aFluorescence showed to be a very sensitive tool to measure structural changes of soil humic acid under different tillage. When excited at 240 nm the fluorescence spectra shows a red shift regarding with forest soil, suggesting an increase of (...) size of the molecule, and consequently soil degradtion. The excitation at 465 nm seems to be associated with humidcation of humic substances and it should be used as a humification index to evaluate soil quality. The correlation between fluorescence techniques to evaluate humification index was very high and consistent with ESR measurements.
650 $ahumic acids
650 $ahumic substances
650 $aphotoluminescence
650 $asoil
650 $aspectroscopy
650 $aSolo
653 $aÁcido húmico
653 $aEspectroscopia
653 $aFotoluminescência
653 $aSubstâncias húmicas
700 1 $aMARTIN-NETO, L.
700 1 $aBAGNATO, V. S.
700 1 $aBAYER, C.
700 1 $aMIELNICZUCK, J.
773 $tIn: INTERNATIONAL HUMIC SUBSTANCES SOCIETY-IHSS; ANNIVERSARY CONFERENCE, 20., 2002, Boston. IHSS 2002: humic substances: nature's most versatile materials.proceedings. Boston: Northeastern University, 2002.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 5 | |
| 3. |  | MILORI, D. M. B. P.; MARTIN-NETO, L.; BAYER, C.; MIELNICZUCK, J.; BAGNATO, V. S. Humidification degree of soil humic acids determined by fluorescence spectroscopy Soil Science, Baltimore, v. 167, n. 11, p. 739-749, 2002| Biblioteca(s): Embrapa Instrumentação. |
|   |
| 5. | | MARTIN-NETO, L.; BAYER, C.; SAAB, S. C.; MIELNICZUCK, J.; CONCEIÇÃO, M.; COLNAGO, L. A. Tillage effects on soil organic matter dynamics in tropical areas monitored by spectroscopic techniques=Suivi spectroscopique de l'effet des techniques culturales sur la dynamique de la matière organique du sol. In: CONGRES MONDIAL DE SCIENCE DU SOL = WORLD CONGRESS OF SOIL SCIENCE = BODENKUNDLICHER WELTKONGRESS-CONGRESO MUNDIAL DE LA CIENCIA DEL SUELO, 16., 1998, Montpellier. Proceedings... Montpellier: [ISSS:AISS:IBS:SICS], 1998. 7 f. Scientific registration nº 1034. symposium nº 7. 1 CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
| |
| Registros recuperados : 5 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
