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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
11/08/2004 |
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Data da última atualização: |
08/03/2010 |
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Autoria: |
CARVALHO, E. R.; MILORI, D. M. B. P.; ROCHA, J. C.; MARTIN-NETO, L. |
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Título: |
Interactions of chlorine and chlorine dioxide with tropical aquatic fulvic acids observed by fluorescence spectroscopy. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: INTERNATIONAL MEETING OF INTERNATIONAL HUMIC SUBSTANCES SOCIETY. -- IHSS, 12, São Pedro, SP, 2004. Humic substances and soil and water environment. Abstracts...[São Carlos], SP: Embrapa Instrumentação Agropecuária, 2004. p. 54. |
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Idioma: |
Inglês |
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Conteúdo: |
I. INTRODUCTION
Biotic and abiotic processes play a significant role for HS genesis. The HS composition is often very heterogeneous and depends on geographical, climatic, physical and biological circumstances. In general, aquatic humic matter in fresh water ecosystems accounts for the major part of the dissolved organic carbon (DOC) and it is, an important precursor for harmful byproducts in the drinking water treatment processo The humic substances in a water supply is undesirable for several reasons, for instance: produce esthetically problems as colar in the water; stabilize dispersed and colloidal particles during coagulation processes; lead to formation of biodegradable organic compounds during ozonation and thereby enhance regrowth of microorganisms within the water-distribution systems. Besides these aspects, reactions between aquatic Humic Substanées (HS) and hafogen-based oxidants, during water chlorination process, can lead to the formation of trihalomethanes, with potential carcinogenic effects (Suffet and MacCarthy, 1989; Korshin et ai., 2001).
In this work, the interactions of tropical aquaticfulvic acids (AFA) with chlorine and chlorine dioxide as well as identification of intermediates were ana.lyzed by fluorescence spectroscopy. Fluorescence spectroscopy is a very promísing, sensitive and useful technique for the study of environmental samples, like those containing humic substances.
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Palavras-Chave: |
Aquatic fulvic acids; aquatic humic substances; Cloração da água; Espectroscopia; Fluorescência; natural waters; photoluminiscence; Substâncias húmicas; trihalomethanes. |
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Thesagro: |
Água. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02437naa a2200277 a 4500
001 1028736
005 2010-03-08
008 2004 bl --- 0-- u #d
100 1 $aCARVALHO, E. R.
245 $aInteractions of chlorine and chlorine dioxide with tropical aquatic fulvic acids observed by fluorescence spectroscopy.
260 $c2004
520 $aI. INTRODUCTION Biotic and abiotic processes play a significant role for HS genesis. The HS composition is often very heterogeneous and depends on geographical, climatic, physical and biological circumstances. In general, aquatic humic matter in fresh water ecosystems accounts for the major part of the dissolved organic carbon (DOC) and it is, an important precursor for harmful byproducts in the drinking water treatment processo The humic substances in a water supply is undesirable for several reasons, for instance: produce esthetically problems as colar in the water; stabilize dispersed and colloidal particles during coagulation processes; lead to formation of biodegradable organic compounds during ozonation and thereby enhance regrowth of microorganisms within the water-distribution systems. Besides these aspects, reactions between aquatic Humic Substanées (HS) and hafogen-based oxidants, during water chlorination process, can lead to the formation of trihalomethanes, with potential carcinogenic effects (Suffet and MacCarthy, 1989; Korshin et ai., 2001). In this work, the interactions of tropical aquaticfulvic acids (AFA) with chlorine and chlorine dioxide as well as identification of intermediates were ana.lyzed by fluorescence spectroscopy. Fluorescence spectroscopy is a very promísing, sensitive and useful technique for the study of environmental samples, like those containing humic substances.
650 $aÁgua
653 $aAquatic fulvic acids
653 $aaquatic humic substances
653 $aCloração da água
653 $aEspectroscopia
653 $aFluorescência
653 $anatural waters
653 $aphotoluminiscence
653 $aSubstâncias húmicas
653 $atrihalomethanes
700 1 $aMILORI, D. M. B. P.
700 1 $aROCHA, J. C.
700 1 $aMARTIN-NETO, L.
773 $tIn: INTERNATIONAL MEETING OF INTERNATIONAL HUMIC SUBSTANCES SOCIETY. -- IHSS, 12, São Pedro, SP, 2004. Humic substances and soil and water environment. Abstracts...[São Carlos], SP: Embrapa Instrumentação Agropecuária, 2004. p. 54.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Trigo. Para informações adicionais entre em contato com cnpt.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
24/04/2010 |
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Data da última atualização: |
21/02/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
CRUZ, M. F. A. da; PRESTES, A. M.; MACIEL, J. L. N. |
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Afiliação: |
Maria Fernanda Antunes da Cruz, estudante UPF; Ariano Moraes Prestes, UPF; JOAO LEODATO NUNES MACIEL, CNPT. |
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Título: |
Esporulação de Pyricularia grisea em diferentes meios de cultura e regimes de luz. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Ciência Rural, Santa Maria, v. 39, n. 5, p. 1562-1564, 2009. |
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Idioma: |
Português |
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Palavras-Chave: |
Conídios; Inóculo. |
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Thesagro: |
Brusone. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00495naa a2200169 a 4500
001 1852650
005 2013-02-21
008 2009 bl uuuu u00u1 u #d
100 1 $aCRUZ, M. F. A. da
245 $aEsporulação de Pyricularia grisea em diferentes meios de cultura e regimes de luz.
260 $c2009
650 $aBrusone
653 $aConídios
653 $aInóculo
700 1 $aPRESTES, A. M.
700 1 $aMACIEL, J. L. N.
773 $tCiência Rural, Santa Maria$gv. 39, n. 5, p. 1562-1564, 2009.
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