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1. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | ALVES FILHO, L. F.; SIBALDELLI, R. N. R.; GONCALVES, S. L.; FARIAS, J. R. B. Análise da variação da precipitação pluviométrica na safra 2019/2020 no município de Londrina, PR. In: JORNADA ACADÊMICA DA EMBRAPA SOJA, 15., 2020, Londrina. Resumos expandidos... Londrina: Embrapa Soja, 2020. 244 p. (Embrapa Soja. Documentos, 429). p. 21-25 Artigo de acesso aberto. Biblioteca(s): Embrapa Soja. |
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2. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | VASCONCELOS, A. T. R.; FERREIRA, H. B.; BIZARRO, C. V.; BONATTO, S. L.; CARVALHO, M. O.; PINTO, P. M.; ALMEIDA, D. F.; ALMEIDA, L. G. P.; ALMEIDA, R.; ALVES-FILHO, L.; ASSUNÇÃO, E. N.; AZEVEDO, V. A. C.; BOGO, M. R.; BRIGIDO, M. M.; BROCCHI, M.; BURITY, H. A.; CAMARGO, A. A.; CAMARGO, S. S.; CAREPO, M. S.; CARRARO, D. M.; CASCARDO, J. C. de M.; CASTRO, L. A.; CAVALCANTI, G.; CHEMALE, G.; COLLEVATTI, R. G.; CUNHA, C. W.; DALLAGIOVANNA, B.; DAMBRÓS, B. P.; DELLAGOSTIN, O. A.; FALCÃO, C.; FANTINATTI-GARBOGGINI, F.; FELIPE, M. S. S.; FIORENTIN, L.; FRANCO, G. R.; FREITAS, N. S. A.; FRÍAS, D.; GRANGEIRO, T. B.; GRISARD, E. C.; GUIMARÃES, C. T.; HUNGRIA, M.; JARDIM, S. N.; KRIEGER, M. A.; LAURINO, J. P.; LIMA, L. F. A.; LOPES, M. I.; LORETO, E. L. S. MADEIRA, H. M. F.; MANFIO, G. P.; MARANHÃO, A. Q.; MARTINKOVICS, C. T.; MEDEIROS, S. R. B.; MOREIRA, M. A. M.; NEIVA, M.; RAMALHO-NETO, C. E.; NICOLÁS, M. F.; OLIVEIRA, S. C.; PAIXÃO, R. F. C.; PEDROSA, F. O.; PENA, S. D. J.; PEREIRA, M.; PEREIRA-FERRARI, L.; PIFFER, I.; PINTO, L. S; POTRICH, D. P.; SALIM, A. C. M.; SANTOS, F. R.; SCHMITT, R.; SCHNEIDER, M. P. C.; SCHRANK, A.; SCHRANK, I. S.; SCHUCK, A. F.; SEUANEZ, H, N.; SILVA, D. W.; SILVA, R.; SILVA, S. C.; SOARES, C. M. A.; SOUZA, K. R.; SOUZA, R. C.; STAATS, C. C.; STEFFENS, M. B. R.; TEIXEIRA, S. M. R.; URMENYI, T. P.; VAINSTEIN, M. H.; ZUCCHERATO, L. W.; SIMPSON, A. J. G.; ZAHA, A. Swine and poultry pathogens: the complete genome sequences of two strains of Mycoplasma hyopneumoniae and a strain of Mycoplasma synoviae. Journal of Bacteriology, Washington, v. 187, n. 16, p. 5568-5577, Aug. 2005. Biblioteca(s): Embrapa Soja. |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Agroindústria de Alimentos. Para informações adicionais entre em contato com ctaa.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
Data corrente: |
08/01/2015 |
Data da última atualização: |
18/02/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
NEVES JUNIOR, A. C. V.; MELO, A.; PINHO, C.; CONEGLIAN, R. C. C.; SOARES, A. G.; FERREIRA, I. M. P. L. V. O. |
Afiliação: |
AUGUSTO C. V. NEVES JUNIOR, UFRJ; ARMINDO MELO, UNIVERSIDADE DO PORTO; CARINA PINHO, UNIVERSIDADE DO PORTO; REGINA C. C. CONEGLIAN, UFRRJ; ANTONIO GOMES SOARES, CTAA; ISABEL M. P. L. V. O. FERREIRA, UNIVERSIDADE DO PORTO. |
Título: |
Response surface methodology for optimization of cyanamide analysis by in situ derivatization and dispersive liquid-liquid microextraction. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Journal of chemometrics, v. 28, n. 9, p. 716-724, may 2014. |
DOI: |
10.1002/cem.2639 |
Idioma: |
Inglês |
Conteúdo: |
Cyanamide is widely used for agricultural purposes; therefore, its residues can be found in water. A new method was developed for its quantification usingin situ derivatization with 2,6-dimethyl-4-quinolinecarboxylic acid N-hydroxysuccinimide ester followed by dispersive liquid–liquid microextraction (DLLME) and high-performance liquid chromatography/fluorescence analysis. Multivariate chemometric techniques were successfully used to obtain the optimum conditions for direct derivatization and DLLME extraction. Derivatization parameters and DLLME extraction conditions were optimized by a two-step design, 2k factorial design for screening, and central composite design for optimization. Best derivatization conditions were addition of 600?L of derivatizing reagent, a temperature of 4ºC, and pH 8.5, whereas for optimum extraction 800?L of solvent, 30% NaCl conc. w/v, and pH 3.8 were chosen. The analytical performance of the method for routine analysis was evaluated. Excellent linearity was achieved from 10 to 200?gL -1with a correlation factor of 0.9996. Precision ranged from 3.5% to 5.5% for intraday assays and 8.5% to 8.6% for interday assays. The mean recoveries performed on water from different origins (ground, river,sea, tap, and mineral) at three levels of concentration (20, 75, and 200?gL-1) ranged from 90.2% to 110.2%. |
Palavras-Chave: |
Análise quimiométrico; Chemometric analyses; Cyanamide; Derivazação in situ; Dispersão líquido-líquido; Dispersive liquid-liquid; In situ derivatization; Microextração. |
Thesaurus NAL: |
microextraction. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02306naa a2200301 a 4500 001 2004825 005 2016-02-18 008 2014 bl uuuu u00u1 u #d 024 7 $a10.1002/cem.2639$2DOI 100 1 $aNEVES JUNIOR, A. C. V. 245 $aResponse surface methodology for optimization of cyanamide analysis by in situ derivatization and dispersive liquid-liquid microextraction. 260 $c2014 520 $aCyanamide is widely used for agricultural purposes; therefore, its residues can be found in water. A new method was developed for its quantification usingin situ derivatization with 2,6-dimethyl-4-quinolinecarboxylic acid N-hydroxysuccinimide ester followed by dispersive liquid–liquid microextraction (DLLME) and high-performance liquid chromatography/fluorescence analysis. Multivariate chemometric techniques were successfully used to obtain the optimum conditions for direct derivatization and DLLME extraction. Derivatization parameters and DLLME extraction conditions were optimized by a two-step design, 2k factorial design for screening, and central composite design for optimization. Best derivatization conditions were addition of 600?L of derivatizing reagent, a temperature of 4ºC, and pH 8.5, whereas for optimum extraction 800?L of solvent, 30% NaCl conc. w/v, and pH 3.8 were chosen. The analytical performance of the method for routine analysis was evaluated. Excellent linearity was achieved from 10 to 200?gL -1with a correlation factor of 0.9996. Precision ranged from 3.5% to 5.5% for intraday assays and 8.5% to 8.6% for interday assays. The mean recoveries performed on water from different origins (ground, river,sea, tap, and mineral) at three levels of concentration (20, 75, and 200?gL-1) ranged from 90.2% to 110.2%. 650 $amicroextraction 653 $aAnálise quimiométrico 653 $aChemometric analyses 653 $aCyanamide 653 $aDerivazação in situ 653 $aDispersão líquido-líquido 653 $aDispersive liquid-liquid 653 $aIn situ derivatization 653 $aMicroextração 700 1 $aMELO, A. 700 1 $aPINHO, C. 700 1 $aCONEGLIAN, R. C. C. 700 1 $aSOARES, A. G. 700 1 $aFERREIRA, I. M. P. L. V. O. 773 $tJournal of chemometrics$gv. 28, n. 9, p. 716-724, may 2014.
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