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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
06/12/2017 |
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Data da última atualização: |
11/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
KOLLAR, S. R. M.; NOVOTNY, E. H.; NASCIMENTO, C. J. do; SUAREZ, P. A. Z. |
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Afiliação: |
SARA R. M. KOLLAR, UnB; ETELVINO HENRIQUE NOVOTNY, CNPS; CLAUDIA J. DO NASCIMENTO, UNIRIO; PAULO A. Z. SUAREZ, UnB. |
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Título: |
Nuclear magnetic resonance (1.40 T) and mid infrared (FTIR-ATR) associated with chemometrics as analytical methods for the analysis of methyl ester yield obtained by esterification reaction. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal of the Brazilian Chemical Society, v. 28, n. 10, p. 1917-1925, out. 2017. |
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DOI: |
http://dx.doi.org/10.21577/0103-5053.20170031 |
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Idioma: |
Inglês |
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Conteúdo: |
In this work, we compared 1.40 T nuclear magnetic resonance (NMR) to 7.05 T (60 and 300 MHz for proton, respectively), and mid-infrared with attenuated total reflectance (FTIR‑ATR), associated with chemometrics methods, for the quantification of the reaction yield during esterification of fatty acids with methanol. The results showed that the integrated intensities of the ester C=O stretching region, relative to the total C=O stretching region, is useful to quantify the fatty acid methyl ester (FAME) concentration. Comparing the results obtained by the different final models: NMR (1.40 T and 7.05 T), FTIR-ATR using multivariate partial last squares regression (PLS) with orthogonal signal correction (OSC), and univariate ordinary least squares (OLS), the NMR of 1.40 T (60 MHz for proton) showed more advantages when compared to a high field spectrometer, due to the non-use of cryogenic and solvents and less laborious work for obtaining results. |
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Palavras-Chave: |
Esterificação; Infravermelho médio; Q-RMN; Quimiometria. |
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Thesaurus Nal: |
biodiesel. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/168322/1/2017-079.pdf
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Marc: |
LEADER 01797naa a2200229 a 4500
001 2081648
005 2021-11-11
008 2017 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.21577/0103-5053.20170031$2DOI
100 1 $aKOLLAR, S. R. M.
245 $aNuclear magnetic resonance (1.40 T) and mid infrared (FTIR-ATR) associated with chemometrics as analytical methods for the analysis of methyl ester yield obtained by esterification reaction.$h[electronic resource]
260 $c2017
520 $aIn this work, we compared 1.40 T nuclear magnetic resonance (NMR) to 7.05 T (60 and 300 MHz for proton, respectively), and mid-infrared with attenuated total reflectance (FTIR‑ATR), associated with chemometrics methods, for the quantification of the reaction yield during esterification of fatty acids with methanol. The results showed that the integrated intensities of the ester C=O stretching region, relative to the total C=O stretching region, is useful to quantify the fatty acid methyl ester (FAME) concentration. Comparing the results obtained by the different final models: NMR (1.40 T and 7.05 T), FTIR-ATR using multivariate partial last squares regression (PLS) with orthogonal signal correction (OSC), and univariate ordinary least squares (OLS), the NMR of 1.40 T (60 MHz for proton) showed more advantages when compared to a high field spectrometer, due to the non-use of cryogenic and solvents and less laborious work for obtaining results.
650 $abiodiesel
653 $aEsterificação
653 $aInfravermelho médio
653 $aQ-RMN
653 $aQuimiometria
700 1 $aNOVOTNY, E. H.
700 1 $aNASCIMENTO, C. J. do
700 1 $aSUAREZ, P. A. Z.
773 $tJournal of the Brazilian Chemical Society$gv. 28, n. 10, p. 1917-1925, out. 2017.
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Registro original: |
Embrapa Solos (CNPS) |
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Origem |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
06/06/2023 |
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Data da última atualização: |
06/06/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 3 |
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Autoria: |
FERREIRA, J. A.; FASSONI, A. C.; FERREIRA, J. M. S.; LINS, P. M. P.; BOTTOLI, C. B. G. |
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Afiliação: |
JORDANDA ALVES FERREIRA, UNICAMP; ARTUR CESAR FASSONI, UNIFEI; JOANA MARIA SANTOS FERREIRA, CPATC; OAULO MANOEL PONTES LINS, SOCOCO; CARLA BEATRIZ GRESPAN BOTTOLI, UNICAMPI. |
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Título: |
Cyproconazole Translocation in Coconut Palm Tree Using Vegetative Endotherapy: Evaluation by LC-MS/MS and Mathematical Modeling. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Horticulturae, v. 8, n. 12, 1099, 2022 |
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ISSN: |
2311-7524 |
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DOI: |
https://doi.org/10.3390/horticulturae8121099 |
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Idioma: |
Inglês |
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Palavras-Chave: |
Endoterapia. |
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Thesagro: |
Coco; Doença de Planta; Tratamento. |
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Thesaurus NAL: |
Coconuts; Cyproconazole. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1154308/1/Cyproconazole-translocation-in-coconut-palm.2022.pdf
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Marc: |
LEADER 00786naa a2200253 a 4500
001 2154308
005 2023-06-06
008 2022 bl uuuu u00u1 u #d
022 $a2311-7524
024 7 $ahttps://doi.org/10.3390/horticulturae8121099$2DOI
100 1 $aFERREIRA, J. A.
245 $aCyproconazole Translocation in Coconut Palm Tree Using Vegetative Endotherapy$bEvaluation by LC-MS/MS and Mathematical Modeling.$h[electronic resource]
260 $c2022
650 $aCoconuts
650 $aCyproconazole
650 $aCoco
650 $aDoença de Planta
650 $aTratamento
653 $aEndoterapia
700 1 $aFASSONI, A. C.
700 1 $aFERREIRA, J. M. S.
700 1 $aLINS, P. M. P.
700 1 $aBOTTOLI, C. B. G.
773 $tHorticulturae$gv. 8, n. 12, 1099, 2022
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Embrapa Tabuleiros Costeiros (CPATC) |
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