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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
12/01/2010 |
Data da última atualização: |
17/11/2022 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Autoria: |
FERREIRA, R. N.; SILVA, A. V.; FERNANDES, P. C. C.; ARAÚJO, C. V. de; FREITAS, D. R. de; PAULINO, R. M.; RIBEIRO, C. C. dos A. e S.; SILVA, W. M. da; MACEDO, P. J. R.; OLIVEIRA, E. J. do N. |
Afiliação: |
PAULO CAMPOS CHRISTO FERNANDES, CPATU. |
Título: |
Contagem de células somáticas influenciando a composição química do leite nos assentamentos rurais Palmares I e II. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE QUALIDADE DO LEITE, 2., 2006, Goiânia. Anais... Goiânia: FUNAPE, 2006. |
Páginas: |
Não paginado. |
Idioma: |
Português |
Palavras-Chave: |
Contagem de célula. |
Thesagro: |
Leite. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/102838/1/6100.pdf
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Marc: |
LEADER 00829nam a2200241 a 4500 001 1580101 005 2022-11-17 008 2006 bl uuuu u00u1 u #d 100 1 $aFERREIRA, R. N. 245 $aContagem de células somáticas influenciando a composição química do leite nos assentamentos rurais Palmares I e II.$h[electronic resource] 260 $aIn: CONGRESSO BRASILEIRO DE QUALIDADE DO LEITE, 2., 2006, Goiânia. Anais... Goiânia: FUNAPE$c2006 300 $aNão paginado. 650 $aLeite 653 $aContagem de célula 700 1 $aSILVA, A. V. 700 1 $aFERNANDES, P. C. C. 700 1 $aARAÚJO, C. V. de 700 1 $aFREITAS, D. R. de 700 1 $aPAULINO, R. M. 700 1 $aRIBEIRO, C. C. dos A. e S. 700 1 $aSILVA, W. M. da 700 1 $aMACEDO, P. J. R. 700 1 $aOLIVEIRA, E. J. do N.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
22/08/2005 |
Data da última atualização: |
13/03/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SANTOS, M. C.; NOGUEIRA, A. R. de A.; NÓBREGA, J. A. |
Afiliação: |
MIRIAN C. SANTOS, Universidade Federal de São Carlos; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; JOAQUIM A. NÓBREGA, Universidade Federal de São Carlos. |
Título: |
Clay and refractory materials slurries in ductively coupled plasma optical emission spectrometry: effects of mechano chemical on emission intensities of analytes. |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
Journal of Brazilian Chemical Society, v. 16, n. 3a, p. 372-380, june 2005. |
DOI: |
https://doi.org/10.1590/S0103-50532005000300010 |
Idioma: |
Inglês |
Conteúdo: |
The developed work investigated the application of mechanochemical synthesis for promoting reactions in the samples and for synthesizing new compounds for increment of emission intensities of analytes in clays and refractory materials slurries in inductively coupled plasma optical emission spectrometry with axial viewing. The hypothesis is that it is possible to generate more volatile compounds during the grinding step and these new compounds will increase the intensities of emission signals for slurries introduced in the plasma. The action of two chemical modifiers, LiBO2 and Na2CO3, added during the grinding step was evaluated. The clays and refractory materials mixed with the chemical modifier were ground for 2 h using a high impact ball mill with a tungsten carbide grinding container and balls. Slurries were prepared by dispersing the modified clays and refractory materials in 10% v v-1 HNO3 solution and by shaking them in an ultrasonic bath to ensure good dispersion. The compounds produced during the grinding step were characterised by X-ray diffraction and thermogravimetric analysis. Both techniques indicated the formation of new compounds in clays and refractory materials by mechanochemical synthesis. Chemical modification effects were evaluated by changes of the emission intensities of Al, Ca, Fe, K, Mg, P, Si, and Ti. Both modifiers caused increments of sensitivities for all analytes in up to 665% (Na2CO3) and 583% (LiBO2) compared to the emission signals for analytes present in slurries prepared using samples ground without adding modifiers. MenosThe developed work investigated the application of mechanochemical synthesis for promoting reactions in the samples and for synthesizing new compounds for increment of emission intensities of analytes in clays and refractory materials slurries in inductively coupled plasma optical emission spectrometry with axial viewing. The hypothesis is that it is possible to generate more volatile compounds during the grinding step and these new compounds will increase the intensities of emission signals for slurries introduced in the plasma. The action of two chemical modifiers, LiBO2 and Na2CO3, added during the grinding step was evaluated. The clays and refractory materials mixed with the chemical modifier were ground for 2 h using a high impact ball mill with a tungsten carbide grinding container and balls. Slurries were prepared by dispersing the modified clays and refractory materials in 10% v v-1 HNO3 solution and by shaking them in an ultrasonic bath to ensure good dispersion. The compounds produced during the grinding step were characterised by X-ray diffraction and thermogravimetric analysis. Both techniques indicated the formation of new compounds in clays and refractory materials by mechanochemical synthesis. Chemical modification effects were evaluated by changes of the emission intensities of Al, Ca, Fe, K, Mg, P, Si, and Ti. Both modifiers caused increments of sensitivities for all analytes in up to 665% (Na2CO3) and 583% (LiBO2) compared to the emission signals for analyt... Mostrar Tudo |
Palavras-Chave: |
ICP; Mechanochemical synthesis; OES; Refractory material; Slurry. |
Thesaurus NAL: |
clay. |
Categoria do assunto: |
W Química e Física |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/110387/1/a10v16n3a.pdf
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Marc: |
LEADER 02362naa a2200229 a 4500 001 1047197 005 2023-03-13 008 2005 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1590/S0103-50532005000300010$2DOI 100 1 $aSANTOS, M. C. 245 $aClay and refractory materials slurries in ductively coupled plasma optical emission spectrometry$beffects of mechano chemical on emission intensities of analytes.$h[electronic resource] 260 $c2005 520 $aThe developed work investigated the application of mechanochemical synthesis for promoting reactions in the samples and for synthesizing new compounds for increment of emission intensities of analytes in clays and refractory materials slurries in inductively coupled plasma optical emission spectrometry with axial viewing. The hypothesis is that it is possible to generate more volatile compounds during the grinding step and these new compounds will increase the intensities of emission signals for slurries introduced in the plasma. The action of two chemical modifiers, LiBO2 and Na2CO3, added during the grinding step was evaluated. The clays and refractory materials mixed with the chemical modifier were ground for 2 h using a high impact ball mill with a tungsten carbide grinding container and balls. Slurries were prepared by dispersing the modified clays and refractory materials in 10% v v-1 HNO3 solution and by shaking them in an ultrasonic bath to ensure good dispersion. The compounds produced during the grinding step were characterised by X-ray diffraction and thermogravimetric analysis. Both techniques indicated the formation of new compounds in clays and refractory materials by mechanochemical synthesis. Chemical modification effects were evaluated by changes of the emission intensities of Al, Ca, Fe, K, Mg, P, Si, and Ti. Both modifiers caused increments of sensitivities for all analytes in up to 665% (Na2CO3) and 583% (LiBO2) compared to the emission signals for analytes present in slurries prepared using samples ground without adding modifiers. 650 $aclay 653 $aICP 653 $aMechanochemical synthesis 653 $aOES 653 $aRefractory material 653 $aSlurry 700 1 $aNOGUEIRA, A. R. de A. 700 1 $aNÓBREGA, J. A. 773 $tJournal of Brazilian Chemical Society$gv. 16, n. 3a, p. 372-380, june 2005.
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Embrapa Pecuária Sudeste (CPPSE) |
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