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| Registros recuperados : 5 | |
| 3. |  | NEVES JUNIOR, A. C. V.; MELO, A.; PINHO, C.; CONEGLIAN, R. C. C.; SOARES, A. G.; FERREIRA, I. M. P. L. V. O. Response surface methodology for optimization of cyanamide analysis by in situ derivatization and dispersive liquid-liquid microextraction. Journal of chemometrics, v. 28, n. 9, p. 716-724, may 2014.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 4. | | PEIXOTO, F. M.; FERNANDES, I.; GOUVÊA, A. C. M. S.; SANTIAGO, M. C. P. de A.; BORGUINI, R. G.; MATEUS, N.; FREITAS, V.; GODOY, R. L. de O.; FERREIRA, I. M. P. L. V. O. Simulation of in vitro digestion coupled to gastric and intestinal transport models to estimate absorption of anthocyanins from peel powder of jabuticaba, jamelão and jambo fruits. Journal of Functional Foods, v. 24, p. 373-381, 2016.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 5. | | GOUVÊA, A. C. M. S.; MELO, A.; SANTIAGO, M. C. P. de A.; PEIXOTO, F. M.; FREITAS, V.; GODOY, R. L. de O.; FERREIRA, I. M. P. L. V. O. Identification and quantification of anthocyanins in fruits from Neomitranthes obscura (DC.) N. Silveira an endemic specie from Brazil by comparison of chromatographic methodologies. Food Chemistry, n. 185, p. 277-283, 2015.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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 | 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
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
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Data corrente: |
08/01/2015 |
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Data da última atualização: |
18/02/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
NEVES JUNIOR, A. C. V.; MELO, A.; PINHO, C.; CONEGLIAN, R. C. C.; SOARES, A. G.; FERREIRA, I. M. P. L. V. O. |
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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. |
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Título: |
Response surface methodology for optimization of cyanamide analysis by in situ derivatization and dispersive liquid-liquid microextraction. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Journal of chemometrics, v. 28, n. 9, p. 716-724, may 2014. |
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DOI: |
10.1002/cem.2639 |
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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%. |
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Palavras-Chave: |
Análise quimiométrico; Chemometric analyses; Cyanamide; Derivazação in situ; Dispersão líquido-líquido; Dispersive liquid-liquid; In situ derivatization; Microextração. |
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Thesaurus NAL: |
microextraction. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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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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