|
Registro Completo |
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
23/06/2003 |
|
Data da última atualização: |
07/05/2008 |
|
Autoria: |
CARVALHO, E. R.; MILORI, D. M. B. P.; NOVOTNY, E. H.; ARAUJO, A. B.; FLORENTINO, A. O.; ROCHA, J. C.; MARTIN-NETO, L. |
|
Afiliação: |
Embrapa Instrumentação Agropecuária, São Carlos, SP. |
|
Título: |
Spectroscoppic characterization of aquatic humic substances from tropical region and their interaction with chlorine. |
|
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. 291-294. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The Tropical Aquatic Humic Substances studied showed predominant composition of fulvic acids. The condensation and humification degree, obtained from fluorescence spectra, were higher in the HA fraction when compared to FA fraction and AHS. The relative fluorescence intensity for the samples was significantly decreased with the increasing of chlorine dose and reaction time. Combined data of fluorescence and size exclusion chromatography suggested that FA molecules after reaction with chlorine present a decrease of the apparent molecular size. |
|
Palavras-Chave: |
Aquatic humic substances; Espectroscopia; Região tropical; Substâncias húmicas aquáticas. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01471naa a2200253 a 4500
001 1024757
005 2008-05-07
008 2002 bl --- 0-- u #d
100 1 $aCARVALHO, E. R.
245 $aSpectroscoppic characterization of aquatic humic substances from tropical region and their interaction with chlorine.
260 $c2002
300 $ap. 291-294.
520 $aThe Tropical Aquatic Humic Substances studied showed predominant composition of fulvic acids. The condensation and humification degree, obtained from fluorescence spectra, were higher in the HA fraction when compared to FA fraction and AHS. The relative fluorescence intensity for the samples was significantly decreased with the increasing of chlorine dose and reaction time. Combined data of fluorescence and size exclusion chromatography suggested that FA molecules after reaction with chlorine present a decrease of the apparent molecular size.
653 $aAquatic humic substances
653 $aEspectroscopia
653 $aRegião tropical
653 $aSubstâncias húmicas aquáticas
700 1 $aMILORI, D. M. B. P.
700 1 $aNOVOTNY, E. H.
700 1 $aARAUJO, A. B.
700 1 $aFLORENTINO, A. O.
700 1 $aROCHA, J. C.
700 1 $aMARTIN-NETO, L.
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) |
|
