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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
22/12/2008 |
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Data da última atualização: |
23/11/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PARAIBA, L. C.; KATAGUIRI, K. |
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Afiliação: |
LOURIVAL COSTA PARAIBA, CNPMA; Karen Kataguiri, Faculdade de Engenharia Ambiental-UNESP Sorocaba. |
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Título: |
Model approach for estimating potato pesticide bioconcentration factor. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Chemosphere, v. 73, p.1247-1252, 2008. |
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Idioma: |
Inglês |
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Conteúdo: |
e presented a model that estimates the bioconcentration factor (BCF) of pesticides in potatoes supposing that the pesticide in the soil solution is absorbed by the potato by passive diffusion, following Fick?s second law. The pesticides in the model are nonionic organic substances, traditionally used in potato crops that degrade in the soil according to a first-order kinetic equation. This presents an expression that relates BCF with the pesticide elimination rate by the potato, with the pesticide accumulation rate within the potato, with the rate of growth of the potato and with the pesticide degradation rate in the soil. BCF was estimated supposing steady state equilibrium of the quotient between the pesticide concentration in the potato and the pesticide concentration in the soil solution. It is suggested that a negative correlation exists between the pesticide BCF and the soil sorption partition coefficient. The model was built based on the work of Trapp et al. [Trapp, S., Cammarano, A., Capri, E., Reichenberg, F., Mayer, P., 2007. Diffusion of PAH in potato and carrot slices and application for a potato model. Environ. Sci. Technol. 41 (9), 3103? 3108], in which an expression to calculate the diffusivity of persistent organic substances in potatoes is presented. The model consists in adding to the expression of Trapp et al. [Trapp, S., Cammarano, A., Capri, E., Reichenberg, F., Mayer, P., 2007. Diffusion of PAH in potato and carrot slices and application for a potato model. Environ. Sci. Technol. 41 (9), 3103?3108] the hypothesis that the pesticide degrades in the soil. The value of BCF suggests which pesticides should be monitored in potatoes. Menose presented a model that estimates the bioconcentration factor (BCF) of pesticides in potatoes supposing that the pesticide in the soil solution is absorbed by the potato by passive diffusion, following Fick?s second law. The pesticides in the model are nonionic organic substances, traditionally used in potato crops that degrade in the soil according to a first-order kinetic equation. This presents an expression that relates BCF with the pesticide elimination rate by the potato, with the pesticide accumulation rate within the potato, with the rate of growth of the potato and with the pesticide degradation rate in the soil. BCF was estimated supposing steady state equilibrium of the quotient between the pesticide concentration in the potato and the pesticide concentration in the soil solution. It is suggested that a negative correlation exists between the pesticide BCF and the soil sorption partition coefficient. The model was built based on the work of Trapp et al. [Trapp, S., Cammarano, A., Capri, E., Reichenberg, F., Mayer, P., 2007. Diffusion of PAH in potato and carrot slices and application for a potato model. Environ. Sci. Technol. 41 (9), 3103? 3108], in which an expression to calculate the diffusivity of persistent organic substances in potatoes is presented. The model consists in adding to the expression of Trapp et al. [Trapp, S., Cammarano, A., Capri, E., Reichenberg, F., Mayer, P., 2007. Diffusion of PAH in potato and carrot slices and application for a potato mo... Mostrar Tudo |
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Palavras-Chave: |
Modelagem matemática. |
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Thesagro: |
Agrotóxico. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/150408/1/2008AP-13.pdf
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Marc: |
LEADER 02130naa a2200157 a 4500
001 1015596
005 2016-11-23
008 2008 bl uuuu u00u1 u #d
100 1 $aPARAIBA, L. C.
245 $aModel approach for estimating potato pesticide bioconcentration factor.$h[electronic resource]
260 $c2008
520 $ae presented a model that estimates the bioconcentration factor (BCF) of pesticides in potatoes supposing that the pesticide in the soil solution is absorbed by the potato by passive diffusion, following Fick?s second law. The pesticides in the model are nonionic organic substances, traditionally used in potato crops that degrade in the soil according to a first-order kinetic equation. This presents an expression that relates BCF with the pesticide elimination rate by the potato, with the pesticide accumulation rate within the potato, with the rate of growth of the potato and with the pesticide degradation rate in the soil. BCF was estimated supposing steady state equilibrium of the quotient between the pesticide concentration in the potato and the pesticide concentration in the soil solution. It is suggested that a negative correlation exists between the pesticide BCF and the soil sorption partition coefficient. The model was built based on the work of Trapp et al. [Trapp, S., Cammarano, A., Capri, E., Reichenberg, F., Mayer, P., 2007. Diffusion of PAH in potato and carrot slices and application for a potato model. Environ. Sci. Technol. 41 (9), 3103? 3108], in which an expression to calculate the diffusivity of persistent organic substances in potatoes is presented. The model consists in adding to the expression of Trapp et al. [Trapp, S., Cammarano, A., Capri, E., Reichenberg, F., Mayer, P., 2007. Diffusion of PAH in potato and carrot slices and application for a potato model. Environ. Sci. Technol. 41 (9), 3103?3108] the hypothesis that the pesticide degrades in the soil. The value of BCF suggests which pesticides should be monitored in potatoes.
650 $aAgrotóxico
653 $aModelagem matemática
700 1 $aKATAGUIRI, K.
773 $tChemosphere$gv. 73, p.1247-1252, 2008.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
28/04/2015 |
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Data da última atualização: |
28/04/2015 |
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Tipo da produção científica: |
Artigo de Divulgação na Mídia |
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Autoria: |
AZEVEDO, H. C.; OLIVEIRA, A. A. de; MUNIZ, E. N.; PAIVA, S. R. |
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Afiliação: |
HYMERSON COSTA AZEVEDO, CPATC; AMAURY APOLONIO DE OLIVEIRA, CPATC; EVANDRO NEVES MUNIZ, CPATC; SAMUEL REZENDE PAIVA, SRI. |
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Título: |
Identificação de marcadores genéticos poderá auxiliar a conservação, melhoramento e prospecção de genes associados à produção de ovinos Santa Inês. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Embrapa Tabuleiros Costeiros, 19 dez., 2012. |
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Idioma: |
Português |
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Conteúdo: |
No ano de 2012 a ovinocultura recebeu uma ótima notícia da ciência. O Consórcio Internacional de Genômica de Ovinos que reuniu nos últimos anos cientistas do Brasil e de outros 19 países (Austrália, Áustria, China, Finlândia, França, Alemanha, Grécia, Índia, Irã, Israel, Itália, Quênia, Nova Zelândia, Noruega, Espanha, Suíça, Turquia, Reino Unido e Estados Unidos) identificou e validou 50 mil marcadores moleculares para a espécie. |
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Thesagro: |
Marcador Genético. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/123061/1/Identificacao-de-marcadores-geneticos.pdf
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Marc: |
LEADER 01011nam a2200157 a 4500
001 2014542
005 2015-04-28
008 2012 bl uuuu u00u1 u #d
100 1 $aAZEVEDO, H. C.
245 $aIdentificação de marcadores genéticos poderá auxiliar a conservação, melhoramento e prospecção de genes associados à produção de ovinos Santa Inês.$h[electronic resource]
260 $aEmbrapa Tabuleiros Costeiros, 19 dez.$c2012
520 $aNo ano de 2012 a ovinocultura recebeu uma ótima notícia da ciência. O Consórcio Internacional de Genômica de Ovinos que reuniu nos últimos anos cientistas do Brasil e de outros 19 países (Austrália, Áustria, China, Finlândia, França, Alemanha, Grécia, Índia, Irã, Israel, Itália, Quênia, Nova Zelândia, Noruega, Espanha, Suíça, Turquia, Reino Unido e Estados Unidos) identificou e validou 50 mil marcadores moleculares para a espécie.
650 $aMarcador Genético
700 1 $aOLIVEIRA, A. A. de
700 1 $aMUNIZ, E. N.
700 1 $aPAIVA, S. R.
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Embrapa Tabuleiros Costeiros (CPATC) |
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